X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_ip6.py;h=ca153dba0e664a3f4759f1570b7104fb1f99072c;hb=d9b0c6fbf7aa5bd9af84264105b39c82028a4a29;hp=dbe87465f7ba7d5696e1a770c8ba48689c410d46;hpb=d91c1dbdb31f80db7d967f2f57c43d0a81d65297;p=vpp.git

diff --git a/test/test_ip6.py b/test/test_ip6.py
index dbe87465f7b..ca153dba0e6 100644
--- a/test/test_ip6.py
+++ b/test/test_ip6.py
@@ -1,34 +1,83 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
+import socket
+from socket import inet_pton, inet_ntop
 import unittest
-from socket import AF_INET6
 
-from framework import VppTestCase, VppTestRunner
-from vpp_sub_interface import VppSubInterface, VppDot1QSubint
-from vpp_pg_interface import is_ipv6_misc
-from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
-    VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
-    VppMplsRoute, DpoProto, VppMplsTable
+from parameterized import parameterized
+import scapy.compat
+import scapy.layers.inet6 as inet6
+from scapy.layers.inet import UDP, IP
+from scapy.contrib.mpls import MPLS
+from scapy.layers.inet6 import (
+    IPv6,
+    ICMPv6ND_NS,
+    ICMPv6ND_RS,
+    ICMPv6ND_RA,
+    ICMPv6NDOptMTU,
+    ICMPv6NDOptSrcLLAddr,
+    ICMPv6NDOptPrefixInfo,
+    ICMPv6ND_NA,
+    ICMPv6NDOptDstLLAddr,
+    ICMPv6DestUnreach,
+    icmp6types,
+    ICMPv6TimeExceeded,
+    ICMPv6EchoRequest,
+    ICMPv6EchoReply,
+    IPv6ExtHdrHopByHop,
+    ICMPv6MLReport2,
+    ICMPv6MLDMultAddrRec,
+)
+from scapy.layers.l2 import Ether, Dot1Q, GRE
+from scapy.packet import Raw
+from scapy.utils6 import (
+    in6_getnsma,
+    in6_getnsmac,
+    in6_ptop,
+    in6_islladdr,
+    in6_mactoifaceid,
+)
+from six import moves
+
+from framework import VppTestCase, VppTestRunner, tag_run_solo
+from util import ppp, ip6_normalize, mk_ll_addr
+from vpp_papi import VppEnum
+from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu
+from vpp_ip_route import (
+    VppIpRoute,
+    VppRoutePath,
+    find_route,
+    VppIpMRoute,
+    VppMRoutePath,
+    VppMplsIpBind,
+    VppMplsRoute,
+    VppMplsTable,
+    VppIpTable,
+    FibPathType,
+    FibPathProto,
+    VppIpInterfaceAddress,
+    find_route_in_dump,
+    find_mroute_in_dump,
+    VppIp6LinkLocalAddress,
+    VppIpRouteV2,
+)
 from vpp_neighbor import find_nbr, VppNeighbor
+from vpp_ipip_tun_interface import VppIpIpTunInterface
+from vpp_pg_interface import is_ipv6_misc
+from vpp_sub_interface import VppSubInterface, VppDot1QSubint
+from vpp_policer import VppPolicer, PolicerAction
+from ipaddress import IPv6Network, IPv6Address
+from vpp_gre_interface import VppGreInterface
+from vpp_teib import VppTeib
 
-from scapy.packet import Raw
-from scapy.layers.l2 import Ether, Dot1Q
-from scapy.layers.inet6 import IPv6, UDP, TCP, ICMPv6ND_NS, ICMPv6ND_RS, \
-    ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation, \
-    ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
-    ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types
-
-from util import ppp
-from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
-    in6_mactoifaceid, in6_ismaddr
-from scapy.utils import inet_pton, inet_ntop
-from scapy.contrib.mpls import MPLS
+AF_INET6 = socket.AF_INET6
 
+try:
+    text_type = unicode
+except NameError:
+    text_type = str
 
-def mk_ll_addr(mac):
-    euid = in6_mactoifaceid(mac)
-    addr = "fe80::" + euid
-    return addr
+NUM_PKTS = 67
 
 
 class TestIPv6ND(VppTestCase):
@@ -44,13 +93,11 @@ class TestIPv6ND(VppTestCase):
 
         # the rx'd RA should be addressed to the sender's source
         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
-        self.assertEqual(in6_ptop(rx[IPv6].dst),
-                         in6_ptop(dst_ip))
+        self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
 
         # and come from the router's link local
         self.assertTrue(in6_islladdr(rx[IPv6].src))
-        self.assertEqual(in6_ptop(rx[IPv6].src),
-                         in6_ptop(mk_ll_addr(intf.local_mac)))
+        self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(mk_ll_addr(intf.local_mac)))
 
     def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
         if not dst_ip:
@@ -66,8 +113,7 @@ class TestIPv6ND(VppTestCase):
 
         # the rx'd NA should be addressed to the sender's source
         self.assertTrue(rx.haslayer(ICMPv6ND_NA))
-        self.assertEqual(in6_ptop(rx[IPv6].dst),
-                         in6_ptop(dst_ip))
+        self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
 
         # and come from the target address
         self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
@@ -81,7 +127,7 @@ class TestIPv6ND(VppTestCase):
         dst_ip = inet_ntop(AF_INET6, nsma)
 
         # NS is broadcast
-        self.assertEqual(rx[Ether].dst, "ff:ff:ff:ff:ff:ff")
+        self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
 
         # and from the router's MAC
         self.assertEqual(rx[Ether].src, intf.local_mac)
@@ -101,8 +147,9 @@ class TestIPv6ND(VppTestCase):
         sll = rx[ICMPv6NDOptSrcLLAddr]
         self.assertEqual(sll.lladdr, intf.local_mac)
 
-    def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
-                           filter_out_fn=is_ipv6_misc):
+    def send_and_expect_ra(
+        self, intf, pkts, remark, dst_ip=None, filter_out_fn=is_ipv6_misc
+    ):
         intf.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
@@ -112,9 +159,9 @@ class TestIPv6ND(VppTestCase):
         rx = rx[0]
         self.validate_ra(intf, rx, dst_ip)
 
-    def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
-                           tgt_ip=None,
-                           filter_out_fn=is_ipv6_misc):
+    def send_and_expect_na(
+        self, intf, pkts, remark, dst_ip=None, tgt_ip=None, filter_out_fn=is_ipv6_misc
+    ):
         intf.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
@@ -124,8 +171,10 @@ class TestIPv6ND(VppTestCase):
         rx = rx[0]
         self.validate_na(intf, rx, dst_ip, tgt_ip)
 
-    def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
-                           filter_out_fn=is_ipv6_misc):
+    def send_and_expect_ns(
+        self, tx_intf, rx_intf, pkts, tgt_ip, filter_out_fn=is_ipv6_misc
+    ):
+        self.vapi.cli("clear trace")
         tx_intf.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
@@ -135,14 +184,6 @@ class TestIPv6ND(VppTestCase):
         rx = rx[0]
         self.validate_ns(rx_intf, rx, tgt_ip)
 
-    def send_and_assert_no_replies(self, intf, pkts, remark):
-        intf.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        for i in self.pg_interfaces:
-            i.get_capture(0)
-            i.assert_nothing_captured(remark=remark)
-
     def verify_ip(self, rx, smac, dmac, sip, dip):
         ether = rx[Ether]
         self.assertEqual(ether.dst, dmac)
@@ -153,13 +194,18 @@ class TestIPv6ND(VppTestCase):
         self.assertEqual(ip.dst, dip)
 
 
+@tag_run_solo
 class TestIPv6(TestIPv6ND):
-    """ IPv6 Test Case """
+    """IPv6 Test Case"""
 
     @classmethod
     def setUpClass(cls):
         super(TestIPv6, cls).setUpClass()
 
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv6, cls).tearDownClass()
+
     def setUp(self):
         """
         Perform test setup before test case.
@@ -177,7 +223,6 @@ class TestIPv6(TestIPv6ND):
 
         :ivar list interfaces: pg interfaces and subinterfaces.
         :ivar dict flows: IPv4 packet flows in test.
-        :ivar list pg_if_packet_sizes: packet sizes in test.
 
         *TODO:* Create AD sub interface
         """
@@ -200,8 +245,7 @@ class TestIPv6(TestIPv6ND):
         self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
 
         # packet sizes
-        self.pg_if_packet_sizes = [64, 512, 1518, 9018]
-        self.sub_if_packet_sizes = [64, 512, 1518 + 4, 9018 + 4]
+        self.pg_if_packet_sizes = [64, 1500, 9020]
 
         self.interfaces = list(self.pg_interfaces)
         self.interfaces.extend(self.sub_interfaces)
@@ -212,15 +256,12 @@ class TestIPv6(TestIPv6ND):
             i.config_ip6()
             i.resolve_ndp()
 
-        # config 2M FIB entries
-        self.config_fib_entries(200)
-
     def tearDown(self):
         """Run standard test teardown and log ``show ip6 neighbors``."""
-        for i in self.sub_interfaces:
+        for i in self.interfaces:
             i.unconfig_ip6()
-            i.ip6_disable()
             i.admin_down()
+        for i in self.sub_interfaces:
             i.remove_vpp_config()
 
         super(TestIPv6, self).tearDown()
@@ -228,53 +269,55 @@ class TestIPv6(TestIPv6ND):
             self.logger.info(self.vapi.cli("show ip6 neighbors"))
             # info(self.vapi.cli("show ip6 fib"))  # many entries
 
-    def config_fib_entries(self, count):
-        """For each interface add to the FIB table *count* routes to
-        "fd02::1/128" destination with interface's local address as next-hop
-        address.
+    def modify_packet(self, src_if, packet_size, pkt):
+        """Add load, set destination IP and extend packet to required packet
+        size for defined interface.
 
-        :param int count: Number of FIB entries.
-
-        - *TODO:* check if the next-hop address shouldn't be remote address
-          instead of local address.
+        :param VppInterface src_if: Interface to create packet for.
+        :param int packet_size: Required packet size.
+        :param Scapy pkt: Packet to be modified.
         """
-        n_int = len(self.interfaces)
-        percent = 0
-        counter = 0.0
-        dest_addr = inet_pton(AF_INET6, "fd02::1")
-        dest_addr_len = 128
-        for i in self.interfaces:
-            next_hop_address = i.local_ip6n
-            for j in range(count / n_int):
-                self.vapi.ip_add_del_route(
-                    dest_addr, dest_addr_len, next_hop_address, is_ipv6=1)
-                counter += 1
-                if counter / count * 100 > percent:
-                    self.logger.info("Configure %d FIB entries .. %d%% done" %
-                                     (count, percent))
-                    percent += 1
-
-    def create_stream(self, src_if, packet_sizes):
+        dst_if_idx = int(packet_size / 10 % 2)
+        dst_if = self.flows[src_if][dst_if_idx]
+        info = self.create_packet_info(src_if, dst_if)
+        payload = self.info_to_payload(info)
+        p = pkt / Raw(payload)
+        p[IPv6].dst = dst_if.remote_ip6
+        info.data = p.copy()
+        if isinstance(src_if, VppSubInterface):
+            p = src_if.add_dot1_layer(p)
+        self.extend_packet(p, packet_size)
+
+        return p
+
+    def create_stream(self, src_if):
         """Create input packet stream for defined interface.
 
         :param VppInterface src_if: Interface to create packet stream for.
-        :param list packet_sizes: Required packet sizes.
         """
-        pkts = []
-        for i in range(0, 257):
-            dst_if = self.flows[src_if][i % 2]
-            info = self.create_packet_info(src_if, dst_if)
-            payload = self.info_to_payload(info)
-            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
-                 IPv6(src=src_if.remote_ip6, dst=dst_if.remote_ip6) /
-                 UDP(sport=1234, dport=1234) /
-                 Raw(payload))
-            info.data = p.copy()
-            if isinstance(src_if, VppSubInterface):
-                p = src_if.add_dot1_layer(p)
-            size = packet_sizes[(i // 2) % len(packet_sizes)]
-            self.extend_packet(p, size)
-            pkts.append(p)
+        hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
+        pkt_tmpl = (
+            Ether(dst=src_if.local_mac, src=src_if.remote_mac)
+            / IPv6(src=src_if.remote_ip6)
+            / inet6.UDP(sport=1234, dport=1234)
+        )
+
+        pkts = [
+            self.modify_packet(src_if, i, pkt_tmpl)
+            for i in moves.range(
+                self.pg_if_packet_sizes[0], self.pg_if_packet_sizes[1], 10
+            )
+        ]
+        pkts_b = [
+            self.modify_packet(src_if, i, pkt_tmpl)
+            for i in moves.range(
+                self.pg_if_packet_sizes[1] + hdr_ext,
+                self.pg_if_packet_sizes[2] + hdr_ext,
+                50,
+            )
+        ]
+        pkts.extend(pkts_b)
+
         return pkts
 
     def verify_capture(self, dst_if, capture):
@@ -290,7 +333,7 @@ class TestIPv6(TestIPv6ND):
             last_info[i.sw_if_index] = None
         is_sub_if = False
         dst_sw_if_index = dst_if.sw_if_index
-        if hasattr(dst_if, 'parent'):
+        if hasattr(dst_if, "parent"):
             is_sub_if = True
         for packet in capture:
             if is_sub_if:
@@ -299,16 +342,17 @@ class TestIPv6(TestIPv6ND):
             self.assertTrue(Dot1Q not in packet)
             try:
                 ip = packet[IPv6]
-                udp = packet[UDP]
-                payload_info = self.payload_to_info(str(packet[Raw]))
+                udp = packet[inet6.UDP]
+                payload_info = self.payload_to_info(packet[Raw])
                 packet_index = payload_info.index
                 self.assertEqual(payload_info.dst, dst_sw_if_index)
                 self.logger.debug(
-                    "Got packet on port %s: src=%u (id=%u)" %
-                    (dst_if.name, payload_info.src, packet_index))
+                    "Got packet on port %s: src=%u (id=%u)"
+                    % (dst_if.name, payload_info.src, packet_index)
+                )
                 next_info = self.get_next_packet_info_for_interface2(
-                    payload_info.src, dst_sw_if_index,
-                    last_info[payload_info.src])
+                    payload_info.src, dst_sw_if_index, last_info[payload_info.src]
+                )
                 last_info[payload_info.src] = next_info
                 self.assertTrue(next_info is not None)
                 self.assertEqual(packet_index, next_info.index)
@@ -316,20 +360,43 @@ class TestIPv6(TestIPv6ND):
                 # Check standard fields
                 self.assertEqual(ip.src, saved_packet[IPv6].src)
                 self.assertEqual(ip.dst, saved_packet[IPv6].dst)
-                self.assertEqual(udp.sport, saved_packet[UDP].sport)
-                self.assertEqual(udp.dport, saved_packet[UDP].dport)
+                self.assertEqual(udp.sport, saved_packet[inet6.UDP].sport)
+                self.assertEqual(udp.dport, saved_packet[inet6.UDP].dport)
             except:
                 self.logger.error(ppp("Unexpected or invalid packet:", packet))
                 raise
         for i in self.interfaces:
             remaining_packet = self.get_next_packet_info_for_interface2(
-                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
-            self.assertTrue(remaining_packet is None,
-                            "Interface %s: Packet expected from interface %s "
-                            "didn't arrive" % (dst_if.name, i.name))
+                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index]
+            )
+            self.assertTrue(
+                remaining_packet is None,
+                "Interface %s: Packet expected from interface %s "
+                "didn't arrive" % (dst_if.name, i.name),
+            )
+
+    def test_next_header_anomaly(self):
+        """IPv6 next header anomaly test
+
+        Test scenario:
+            - ipv6 next header field = Fragment Header (44)
+            - next header is ICMPv6 Echo Request
+            - wait for reassembly
+        """
+        pkt = (
+            Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44)
+            / ICMPv6EchoRequest()
+        )
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        # wait for reassembly
+        self.sleep(10)
 
     def test_fib(self):
-        """ IPv6 FIB test
+        """IPv6 FIB test
 
         Test scenario:
             - Create IPv6 stream for pg0 interface
@@ -337,11 +404,11 @@ class TestIPv6(TestIPv6ND):
             - Send and verify received packets on each interface.
         """
 
-        pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes)
+        pkts = self.create_stream(self.pg0)
         self.pg0.add_stream(pkts)
 
         for i in self.sub_interfaces:
-            pkts = self.create_stream(i, self.sub_if_packet_sizes)
+            pkts = self.create_stream(i)
             i.parent.add_stream(pkts)
 
         self.pg_enable_capture(self.pg_interfaces)
@@ -355,7 +422,7 @@ class TestIPv6(TestIPv6ND):
             self.verify_capture(i, pkts)
 
     def test_ns(self):
-        """ IPv6 Neighbour Solicitation Exceptions
+        """IPv6 Neighbour Solicitation Exceptions
 
         Test scenario:
            - Send an NS Sourced from an address not covered by the link sub-net
@@ -369,15 +436,17 @@ class TestIPv6(TestIPv6ND):
         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
         d = inet_ntop(AF_INET6, nsma)
 
-        p = (Ether(dst=in6_getnsmac(nsma)) /
-             IPv6(dst=d, src="2002::2") /
-             ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
-             ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        p = (
+            Ether(dst=in6_getnsmac(nsma))
+            / IPv6(dst=d, src="2002::2")
+            / ICMPv6ND_NS(tgt=self.pg0.local_ip6)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
         pkts = [p]
 
         self.send_and_assert_no_replies(
-            self.pg0, pkts,
-            "No response to NS source by address not on sub-net")
+            self.pg0, pkts, "No response to NS source by address not on sub-net"
+        )
 
         #
         # An NS for sent to a solicited mcast group the router is
@@ -387,15 +456,17 @@ class TestIPv6(TestIPv6ND):
             nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
             d = inet_ntop(AF_INET6, nsma)
 
-            p = (Ether(dst=in6_getnsmac(nsma)) /
-                 IPv6(dst=d, src=self.pg0.remote_ip6) /
-                 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
-                 ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+            p = (
+                Ether(dst=in6_getnsmac(nsma))
+                / IPv6(dst=d, src=self.pg0.remote_ip6)
+                / ICMPv6ND_NS(tgt=self.pg0.local_ip6)
+                / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+            )
             pkts = [p]
 
             self.send_and_assert_no_replies(
-                self.pg0, pkts,
-                "No response to NS sent to unjoined mcast address")
+                self.pg0, pkts, "No response to NS sent to unjoined mcast address"
+            )
 
         #
         # An NS whose target address is one the router does not own
@@ -403,94 +474,108 @@ class TestIPv6(TestIPv6ND):
         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
         d = inet_ntop(AF_INET6, nsma)
 
-        p = (Ether(dst=in6_getnsmac(nsma)) /
-             IPv6(dst=d, src=self.pg0.remote_ip6) /
-             ICMPv6ND_NS(tgt="fd::ffff") /
-             ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        p = (
+            Ether(dst=in6_getnsmac(nsma))
+            / IPv6(dst=d, src=self.pg0.remote_ip6)
+            / ICMPv6ND_NS(tgt="fd::ffff")
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
         pkts = [p]
 
-        self.send_and_assert_no_replies(self.pg0, pkts,
-                                        "No response to NS for unknown target")
+        self.send_and_assert_no_replies(
+            self.pg0, pkts, "No response to NS for unknown target"
+        )
 
         #
         # A neighbor entry that has no associated FIB-entry
         #
         self.pg0.generate_remote_hosts(4)
-        nd_entry = VppNeighbor(self,
-                               self.pg0.sw_if_index,
-                               self.pg0.remote_hosts[2].mac,
-                               self.pg0.remote_hosts[2].ip6,
-                               af=AF_INET6,
-                               is_no_fib_entry=1)
+        nd_entry = VppNeighbor(
+            self,
+            self.pg0.sw_if_index,
+            self.pg0.remote_hosts[2].mac,
+            self.pg0.remote_hosts[2].ip6,
+            is_no_fib_entry=1,
+        )
         nd_entry.add_vpp_config()
 
         #
         # check we have the neighbor, but no route
         #
-        self.assertTrue(find_nbr(self,
-                                 self.pg0.sw_if_index,
-                                 self.pg0._remote_hosts[2].ip6,
-                                 inet=AF_INET6))
-        self.assertFalse(find_route(self,
-                                    self.pg0._remote_hosts[2].ip6,
-                                    128,
-                                    inet=AF_INET6))
+        self.assertTrue(
+            find_nbr(self, self.pg0.sw_if_index, self.pg0._remote_hosts[2].ip6)
+        )
+        self.assertFalse(find_route(self, self.pg0._remote_hosts[2].ip6, 128))
 
         #
         # send an NS from a link local address to the interface's global
         # address
         #
-        p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
-             IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
-             ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
-             ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        p = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac)
+            / IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6_ll)
+            / ICMPv6ND_NS(tgt=self.pg0.local_ip6)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
 
-        self.send_and_expect_na(self.pg0, p,
-                                "NS from link-local",
-                                dst_ip=self.pg0._remote_hosts[2].ip6_ll,
-                                tgt_ip=self.pg0.local_ip6)
+        self.send_and_expect_na(
+            self.pg0,
+            p,
+            "NS from link-local",
+            dst_ip=self.pg0._remote_hosts[2].ip6_ll,
+            tgt_ip=self.pg0.local_ip6,
+        )
 
         #
         # we should have learned an ND entry for the peer's link-local
         # but not inserted a route to it in the FIB
         #
-        self.assertTrue(find_nbr(self,
-                                 self.pg0.sw_if_index,
-                                 self.pg0._remote_hosts[2].ip6_ll,
-                                 inet=AF_INET6))
-        self.assertFalse(find_route(self,
-                                    self.pg0._remote_hosts[2].ip6_ll,
-                                    128,
-                                    inet=AF_INET6))
+        self.assertTrue(
+            find_nbr(self, self.pg0.sw_if_index, self.pg0._remote_hosts[2].ip6_ll)
+        )
+        self.assertFalse(find_route(self, self.pg0._remote_hosts[2].ip6_ll, 128))
 
         #
         # An NS to the router's own Link-local
         #
-        p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
-             IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
-             ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
-             ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        p = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac)
+            / IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6_ll)
+            / ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
+
+        self.send_and_expect_na(
+            self.pg0,
+            p,
+            "NS to/from link-local",
+            dst_ip=self.pg0._remote_hosts[3].ip6_ll,
+            tgt_ip=self.pg0.local_ip6_ll,
+        )
+
+        #
+        # do not respond to a NS for the peer's address
+        #
+        p = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac)
+            / IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6_ll)
+            / ICMPv6ND_NS(tgt=self.pg0._remote_hosts[3].ip6_ll)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
 
-        self.send_and_expect_na(self.pg0, p,
-                                "NS to/from link-local",
-                                dst_ip=self.pg0._remote_hosts[3].ip6_ll,
-                                tgt_ip=self.pg0.local_ip6_ll)
+        self.send_and_assert_no_replies(self.pg0, p)
 
         #
         # we should have learned an ND entry for the peer's link-local
         # but not inserted a route to it in the FIB
         #
-        self.assertTrue(find_nbr(self,
-                                 self.pg0.sw_if_index,
-                                 self.pg0._remote_hosts[3].ip6_ll,
-                                 inet=AF_INET6))
-        self.assertFalse(find_route(self,
-                                    self.pg0._remote_hosts[3].ip6_ll,
-                                    128,
-                                    inet=AF_INET6))
+        self.assertTrue(
+            find_nbr(self, self.pg0.sw_if_index, self.pg0._remote_hosts[3].ip6_ll)
+        )
+        self.assertFalse(find_route(self, self.pg0._remote_hosts[3].ip6_ll, 128))
 
     def test_ns_duplicates(self):
-        """ ND Duplicates"""
+        """ND Duplicates"""
 
         #
         # Generate some hosts on the LAN
@@ -500,28 +585,30 @@ class TestIPv6(TestIPv6ND):
         #
         # Add host 1 on pg1 and pg2
         #
-        ns_pg1 = VppNeighbor(self,
-                             self.pg1.sw_if_index,
-                             self.pg1.remote_hosts[1].mac,
-                             self.pg1.remote_hosts[1].ip6,
-                             af=AF_INET6)
+        ns_pg1 = VppNeighbor(
+            self,
+            self.pg1.sw_if_index,
+            self.pg1.remote_hosts[1].mac,
+            self.pg1.remote_hosts[1].ip6,
+        )
         ns_pg1.add_vpp_config()
-        ns_pg2 = VppNeighbor(self,
-                             self.pg2.sw_if_index,
-                             self.pg2.remote_mac,
-                             self.pg1.remote_hosts[1].ip6,
-                             af=AF_INET6)
+        ns_pg2 = VppNeighbor(
+            self,
+            self.pg2.sw_if_index,
+            self.pg2.remote_mac,
+            self.pg1.remote_hosts[1].ip6,
+        )
         ns_pg2.add_vpp_config()
 
         #
         # IP packet destined for pg1 remote host arrives on pg1 again.
         #
-        p = (Ether(dst=self.pg0.local_mac,
-                   src=self.pg0.remote_mac) /
-             IPv6(src=self.pg0.remote_ip6,
-                  dst=self.pg1.remote_hosts[1].ip6) /
-             UDP(sport=1234, dport=1234) /
-             Raw())
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_hosts[1].ip6)
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw()
+        )
 
         self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -529,20 +616,21 @@ class TestIPv6(TestIPv6ND):
 
         rx1 = self.pg1.get_capture(1)
 
-        self.verify_ip(rx1[0],
-                       self.pg1.local_mac,
-                       self.pg1.remote_hosts[1].mac,
-                       self.pg0.remote_ip6,
-                       self.pg1.remote_hosts[1].ip6)
+        self.verify_ip(
+            rx1[0],
+            self.pg1.local_mac,
+            self.pg1.remote_hosts[1].mac,
+            self.pg0.remote_ip6,
+            self.pg1.remote_hosts[1].ip6,
+        )
 
         #
         # remove the duplicate on pg1
-        # packet stream shoud generate NSs out of pg1
+        # packet stream should generate NSs out of pg1
         #
         ns_pg1.remove_vpp_config()
 
-        self.send_and_expect_ns(self.pg0, self.pg1,
-                                p, self.pg1.remote_hosts[1].ip6)
+        self.send_and_expect_ns(self.pg0, self.pg1, p, self.pg1.remote_hosts[1].ip6)
 
         #
         # Add it back
@@ -555,15 +643,19 @@ class TestIPv6(TestIPv6ND):
 
         rx1 = self.pg1.get_capture(1)
 
-        self.verify_ip(rx1[0],
-                       self.pg1.local_mac,
-                       self.pg1.remote_hosts[1].mac,
-                       self.pg0.remote_ip6,
-                       self.pg1.remote_hosts[1].ip6)
+        self.verify_ip(
+            rx1[0],
+            self.pg1.local_mac,
+            self.pg1.remote_hosts[1].mac,
+            self.pg0.remote_ip6,
+            self.pg1.remote_hosts[1].ip6,
+        )
 
-    def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
+    def validate_ra(self, intf, rx, dst_ip=None, src_ip=None, mtu=9000, pi_opt=None):
         if not dst_ip:
             dst_ip = intf.remote_ip6
+        if not src_ip:
+            src_ip = mk_ll_addr(intf.local_mac)
 
         # unicasted packets must come to the unicast mac
         self.assertEqual(rx[Ether].dst, intf.remote_mac)
@@ -573,13 +665,11 @@ class TestIPv6(TestIPv6ND):
 
         # the rx'd RA should be addressed to the sender's source
         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
-        self.assertEqual(in6_ptop(rx[IPv6].dst),
-                         in6_ptop(dst_ip))
+        self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
 
         # and come from the router's link local
         self.assertTrue(in6_islladdr(rx[IPv6].src))
-        self.assertEqual(in6_ptop(rx[IPv6].src),
-                         in6_ptop(mk_ll_addr(intf.local_mac)))
+        self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(src_ip))
 
         # it should contain the links MTU
         ra = rx[ICMPv6ND_RA]
@@ -598,22 +688,34 @@ class TestIPv6(TestIPv6ND):
             # the options are nested in the scapy packet in way that i cannot
             # decipher how to decode. this 1st layer of option always returns
             # nested classes, so a direct obj1=obj2 comparison always fails.
-            # however, the getlayer(.., 2) does give one instnace.
-            # so we cheat here and construct a new opt instnace for comparison
-            rd = ICMPv6NDOptPrefixInfo(prefixlen=raos.prefixlen,
-                                       prefix=raos.prefix,
-                                       L=raos.L,
-                                       A=raos.A)
+            # however, the getlayer(.., 2) does give one instance.
+            # so we cheat here and construct a new opt instance for comparison
+            rd = ICMPv6NDOptPrefixInfo(
+                prefixlen=raos.prefixlen, prefix=raos.prefix, L=raos.L, A=raos.A
+            )
             if type(pi_opt) is list:
                 for ii in range(len(pi_opt)):
                     self.assertEqual(pi_opt[ii], rd)
-                    rd = rx.getlayer(ICMPv6NDOptPrefixInfo, ii+2)
+                    rd = rx.getlayer(ICMPv6NDOptPrefixInfo, ii + 2)
             else:
-                self.assertEqual(pi_opt, raos)
-
-    def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
-                           filter_out_fn=is_ipv6_misc,
-                           opt=None):
+                self.assertEqual(
+                    pi_opt,
+                    raos,
+                    "Expected: %s, received: %s"
+                    % (pi_opt.show(dump=True), raos.show(dump=True)),
+                )
+
+    def send_and_expect_ra(
+        self,
+        intf,
+        pkts,
+        remark,
+        dst_ip=None,
+        filter_out_fn=is_ipv6_misc,
+        opt=None,
+        src_ip=None,
+    ):
+        self.vapi.cli("clear trace")
         intf.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
@@ -621,14 +723,16 @@ class TestIPv6(TestIPv6ND):
 
         self.assertEqual(len(rx), 1)
         rx = rx[0]
-        self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
+        self.validate_ra(intf, rx, dst_ip, src_ip=src_ip, pi_opt=opt)
 
     def test_rs(self):
-        """ IPv6 Router Solicitation Exceptions
+        """IPv6 Router Solicitation Exceptions
 
         Test scenario:
         """
 
+        self.pg0.ip6_ra_config(no=1, suppress=1)
+
         #
         # Before we begin change the IPv6 RA responses to use the unicast
         # address - that way we will not confuse them with the periodic
@@ -643,9 +747,11 @@ class TestIPv6(TestIPv6ND):
         # An RS from a link source address
         #  - expect an RA in return
         #
-        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
-             ICMPv6ND_RS())
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6)
+            / ICMPv6ND_RS()
+        )
         pkts = [p]
         self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
 
@@ -655,7 +761,8 @@ class TestIPv6(TestIPv6ND):
         self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
 
         #
-        # When we reconfiure the IPv6 RA config, we reset the RA rate limiting,
+        # When we reconfigure the IPv6 RA config,
+        # we reset the RA rate limiting,
         # so we need to do this before each test below so as not to drop
         # packets for rate limiting reasons. Test this works here.
         #
@@ -666,39 +773,55 @@ class TestIPv6(TestIPv6ND):
         # An RS sent from a non-link local source
         #
         self.pg0.ip6_ra_config(send_unicast=1)
-        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0.local_ip6, src="2002::ffff") /
-             ICMPv6ND_RS())
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src="2002::ffff")
+            / ICMPv6ND_RS()
+        )
         pkts = [p]
-        self.send_and_assert_no_replies(self.pg0, pkts,
-                                        "RS from non-link source")
+        self.send_and_assert_no_replies(self.pg0, pkts, "RS from non-link source")
 
         #
         # Source an RS from a link local address
         #
         self.pg0.ip6_ra_config(send_unicast=1)
         ll = mk_ll_addr(self.pg0.remote_mac)
-        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0.local_ip6, src=ll) /
-             ICMPv6ND_RS())
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src=ll)
+            / ICMPv6ND_RS()
+        )
         pkts = [p]
-        self.send_and_expect_ra(self.pg0, pkts,
-                                "RS sourced from link-local",
-                                dst_ip=ll)
+        self.send_and_expect_ra(self.pg0, pkts, "RS sourced from link-local", dst_ip=ll)
+
+        #
+        # Source an RS from a link local address
+        # Ensure suppress also applies to solicited RS
+        #
+        self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
+        ll = mk_ll_addr(self.pg0.remote_mac)
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src=ll)
+            / ICMPv6ND_RS()
+        )
+        pkts = [p]
+        self.send_and_assert_no_replies(self.pg0, pkts, "Suppressed RS from link-local")
 
         #
         # Send the RS multicast
         #
+        self.pg0.ip6_ra_config(no=1, suppress=1)  # Reset suppress flag to zero
         self.pg0.ip6_ra_config(send_unicast=1)
         dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
         ll = mk_ll_addr(self.pg0.remote_mac)
-        p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
-             IPv6(dst="ff02::2", src=ll) /
-             ICMPv6ND_RS())
+        p = (
+            Ether(dst=dmac, src=self.pg0.remote_mac)
+            / IPv6(dst="ff02::2", src=ll)
+            / ICMPv6ND_RS()
+        )
         pkts = [p]
-        self.send_and_expect_ra(self.pg0, pkts,
-                                "RS sourced from link-local",
-                                dst_ip=ll)
+        self.send_and_expect_ra(self.pg0, pkts, "RS sourced from link-local", dst_ip=ll)
 
         #
         # Source from the unspecified address ::. This happens when the RS
@@ -708,202 +831,816 @@ class TestIPv6(TestIPv6ND):
         # If we happen to pick up the periodic RA at this point then so be it,
         # it's not an error.
         #
-        self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
-        p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
-             IPv6(dst="ff02::2", src="::") /
-             ICMPv6ND_RS())
+        self.pg0.ip6_ra_config(send_unicast=1)
+        p = (
+            Ether(dst=dmac, src=self.pg0.remote_mac)
+            / IPv6(dst="ff02::2", src="::")
+            / ICMPv6ND_RS()
+        )
         pkts = [p]
-        self.send_and_expect_ra(self.pg0, pkts,
-                                "RS sourced from unspecified",
-                                dst_ip="ff02::1",
-                                filter_out_fn=None)
+        self.send_and_expect_ra(
+            self.pg0,
+            pkts,
+            "RS sourced from unspecified",
+            dst_ip="ff02::1",
+            filter_out_fn=None,
+        )
 
         #
         # Configure The RA to announce the links prefix
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len)
+        )
 
         #
         # RAs should now contain the prefix information option
         #
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=1,
-                                    A=1)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=1, A=1
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
         ll = mk_ll_addr(self.pg0.remote_mac)
-        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0.local_ip6, src=ll) /
-             ICMPv6ND_RS())
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with prefix-info",
-                                dst_ip=ll,
-                                opt=opt)
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src=ll)
+            / ICMPv6ND_RS()
+        )
+        self.send_and_expect_ra(self.pg0, p, "RA with prefix-info", dst_ip=ll, opt=opt)
 
         #
         # Change the prefix info to not off-link
         #  L-flag is clear
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len,
-                               off_link=1)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len), off_link=1
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=0,
-                                    A=1)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=0, A=1
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix info with L-flag=0",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with Prefix info with L-flag=0", dst_ip=ll, opt=opt
+        )
 
         #
         # Change the prefix info to not off-link, no-autoconfig
         #  L and A flag are clear in the advert
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len,
-                               off_link=1,
-                               no_autoconfig=1)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len),
+            off_link=1,
+            no_autoconfig=1,
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=0,
-                                    A=0)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=0, A=0
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix info with A & L-flag=0",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with Prefix info with A & L-flag=0", dst_ip=ll, opt=opt
+        )
 
         #
         # Change the flag settings back to the defaults
         #  L and A flag are set in the advert
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len)
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=1,
-                                    A=1)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=1, A=1
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix info",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(self.pg0, p, "RA with Prefix info", dst_ip=ll, opt=opt)
 
         #
         # Change the prefix info to not off-link, no-autoconfig
         #  L and A flag are clear in the advert
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len,
-                               off_link=1,
-                               no_autoconfig=1)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len),
+            off_link=1,
+            no_autoconfig=1,
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=0,
-                                    A=0)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=0, A=0
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix info with A & L-flag=0",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with Prefix info with A & L-flag=0", dst_ip=ll, opt=opt
+        )
 
         #
-        # Use the reset to defults option to revert to defaults
+        # Use the reset to defaults option to revert to defaults
         #  L and A flag are clear in the advert
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len,
-                               use_default=1)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len), use_default=1
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                    prefix=self.pg0.local_ip6,
-                                    L=1,
-                                    A=1)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg0.local_ip6_prefix_len, prefix=self.pg0.local_ip6, L=1, A=1
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix reverted to defaults",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with Prefix reverted to defaults", dst_ip=ll, opt=opt
+        )
 
         #
         # Advertise Another prefix. With no L-flag/A-flag
         #
-        self.pg0.ip6_ra_prefix(self.pg1.local_ip6n,
-                               self.pg1.local_ip6_prefix_len,
-                               off_link=1,
-                               no_autoconfig=1)
-
-        opt = [ICMPv6NDOptPrefixInfo(prefixlen=self.pg0.local_ip6_prefix_len,
-                                     prefix=self.pg0.local_ip6,
-                                     L=1,
-                                     A=1),
-               ICMPv6NDOptPrefixInfo(prefixlen=self.pg1.local_ip6_prefix_len,
-                                     prefix=self.pg1.local_ip6,
-                                     L=0,
-                                     A=0)]
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg1.local_ip6, self.pg1.local_ip6_prefix_len),
+            off_link=1,
+            no_autoconfig=1,
+        )
+
+        opt = [
+            ICMPv6NDOptPrefixInfo(
+                prefixlen=self.pg0.local_ip6_prefix_len,
+                prefix=self.pg0.local_ip6,
+                L=1,
+                A=1,
+            ),
+            ICMPv6NDOptPrefixInfo(
+                prefixlen=self.pg1.local_ip6_prefix_len,
+                prefix=self.pg1.local_ip6,
+                L=0,
+                A=0,
+            ),
+        ]
 
         self.pg0.ip6_ra_config(send_unicast=1)
         ll = mk_ll_addr(self.pg0.remote_mac)
-        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0.local_ip6, src=ll) /
-             ICMPv6ND_RS())
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with multiple Prefix infos",
-                                dst_ip=ll,
-                                opt=opt)
+        p = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0.local_ip6, src=ll)
+            / ICMPv6ND_RS()
+        )
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with multiple Prefix infos", dst_ip=ll, opt=opt
+        )
 
         #
-        # Remove the first refix-info - expect the second is still in the
+        # Remove the first prefix-info - expect the second is still in the
         # advert
         #
-        self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
-                               self.pg0.local_ip6_prefix_len,
-                               is_no=1)
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg0.local_ip6, self.pg0.local_ip6_prefix_len), is_no=1
+        )
 
-        opt = ICMPv6NDOptPrefixInfo(prefixlen=self.pg1.local_ip6_prefix_len,
-                                    prefix=self.pg1.local_ip6,
-                                    L=0,
-                                    A=0)
+        opt = ICMPv6NDOptPrefixInfo(
+            prefixlen=self.pg1.local_ip6_prefix_len, prefix=self.pg1.local_ip6, L=0, A=0
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix reverted to defaults",
-                                dst_ip=ll,
-                                opt=opt)
+        self.send_and_expect_ra(
+            self.pg0, p, "RA with Prefix reverted to defaults", dst_ip=ll, opt=opt
+        )
+
+        #
+        # Remove the second prefix-info - expect no prefix-info in the adverts
+        #
+        self.pg0.ip6_ra_prefix(
+            "%s/%s" % (self.pg1.local_ip6, self.pg1.local_ip6_prefix_len), is_no=1
+        )
 
         #
-        # Remove the second prefix-info - expect no prefix-info i nthe adverts
+        # change the link's link local, so we know that works too.
         #
-        self.pg0.ip6_ra_prefix(self.pg1.local_ip6n,
-                               self.pg1.local_ip6_prefix_len,
-                               is_no=1)
+        self.vapi.sw_interface_ip6_set_link_local_address(
+            sw_if_index=self.pg0.sw_if_index, ip="fe80::88"
+        )
 
         self.pg0.ip6_ra_config(send_unicast=1)
-        self.send_and_expect_ra(self.pg0, p,
-                                "RA with Prefix reverted to defaults",
-                                dst_ip=ll)
+        self.send_and_expect_ra(
+            self.pg0,
+            p,
+            "RA with Prefix reverted to defaults",
+            dst_ip=ll,
+            src_ip="fe80::88",
+        )
 
         #
         # Reset the periodic advertisements back to default values
         #
-        self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
+        self.pg0.ip6_ra_config(suppress=1)
+        self.pg0.ip6_ra_config(no=1, send_unicast=1)
+
+    def test_mld(self):
+        """MLD Report"""
+        #
+        # test one MLD is sent after applying an IPv6 Address on an interface
+        #
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        subitf = VppDot1QSubint(self, self.pg1, 99)
+
+        subitf.admin_up()
+        subitf.config_ip6()
+
+        rxs = self.pg1._get_capture(timeout=4, filter_out_fn=None)
+
+        #
+        # hunt for the MLD on vlan 99
+        #
+        for rx in rxs:
+            # make sure ipv6 packets with hop by hop options have
+            # correct checksums
+            self.assert_packet_checksums_valid(rx)
+            if (
+                rx.haslayer(IPv6ExtHdrHopByHop)
+                and rx.haslayer(Dot1Q)
+                and rx[Dot1Q].vlan == 99
+            ):
+                mld = rx[ICMPv6MLReport2]
+
+        self.assertEqual(mld.records_number, 4)
+
+
+class TestIPv6RouteLookup(VppTestCase):
+    """IPv6 Route Lookup Test Case"""
+
+    routes = []
+
+    def route_lookup(self, prefix, exact):
+        return self.vapi.api(
+            self.vapi.papi.ip_route_lookup,
+            {
+                "table_id": 0,
+                "exact": exact,
+                "prefix": prefix,
+            },
+        )
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv6RouteLookup, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv6RouteLookup, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPv6RouteLookup, self).setUp()
+
+        drop_nh = VppRoutePath("::1", 0xFFFFFFFF, type=FibPathType.FIB_PATH_TYPE_DROP)
+
+        # Add 3 routes
+        r = VppIpRoute(self, "2001:1111::", 32, [drop_nh])
+        r.add_vpp_config()
+        self.routes.append(r)
+
+        r = VppIpRoute(self, "2001:1111:2222::", 48, [drop_nh])
+        r.add_vpp_config()
+        self.routes.append(r)
+
+        r = VppIpRoute(self, "2001:1111:2222::1", 128, [drop_nh])
+        r.add_vpp_config()
+        self.routes.append(r)
+
+    def tearDown(self):
+        # Remove the routes we added
+        for r in self.routes:
+            r.remove_vpp_config()
+
+        super(TestIPv6RouteLookup, self).tearDown()
+
+    def test_exact_match(self):
+        # Verify we find the host route
+        prefix = "2001:1111:2222::1/128"
+        result = self.route_lookup(prefix, True)
+        assert prefix == str(result.route.prefix)
+
+        # Verify we find a middle prefix route
+        prefix = "2001:1111:2222::/48"
+        result = self.route_lookup(prefix, True)
+        assert prefix == str(result.route.prefix)
+
+        # Verify we do not find an available LPM.
+        with self.vapi.assert_negative_api_retval():
+            self.route_lookup("2001::2/128", True)
+
+    def test_longest_prefix_match(self):
+        # verify we find lpm
+        lpm_prefix = "2001:1111:2222::/48"
+        result = self.route_lookup("2001:1111:2222::2/128", False)
+        assert lpm_prefix == str(result.route.prefix)
+
+        # Verify we find the exact when not requested
+        result = self.route_lookup(lpm_prefix, False)
+        assert lpm_prefix == str(result.route.prefix)
+
+        # Can't seem to delete the default route so no negative LPM test.
+
+
+class TestIPv6IfAddrRoute(VppTestCase):
+    """IPv6 Interface Addr Route Test Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv6IfAddrRoute, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv6IfAddrRoute, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPv6IfAddrRoute, self).setUp()
+
+        # create 1 pg interface
+        self.create_pg_interfaces(range(1))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestIPv6IfAddrRoute, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def test_ipv6_ifaddrs_same_prefix(self):
+        """IPv6 Interface Addresses Same Prefix test
+
+        Test scenario:
+
+            - Verify no route in FIB for prefix 2001:10::/64
+            - Configure IPv4 address 2001:10::10/64  on an interface
+            - Verify route in FIB for prefix 2001:10::/64
+            - Configure IPv4 address 2001:10::20/64 on an interface
+            - Delete 2001:10::10/64 from interface
+            - Verify route in FIB for prefix 2001:10::/64
+            - Delete 2001:10::20/64 from interface
+            - Verify no route in FIB for prefix 2001:10::/64
+        """
+
+        addr1 = "2001:10::10"
+        addr2 = "2001:10::20"
+
+        if_addr1 = VppIpInterfaceAddress(self, self.pg0, addr1, 64)
+        if_addr2 = VppIpInterfaceAddress(self, self.pg0, addr2, 64)
+        self.assertFalse(if_addr1.query_vpp_config())
+        self.assertFalse(find_route(self, addr1, 128))
+        self.assertFalse(find_route(self, addr2, 128))
+
+        # configure first address, verify route present
+        if_addr1.add_vpp_config()
+        self.assertTrue(if_addr1.query_vpp_config())
+        self.assertTrue(find_route(self, addr1, 128))
+        self.assertFalse(find_route(self, addr2, 128))
+
+        # configure second address, delete first, verify route not removed
+        if_addr2.add_vpp_config()
+        if_addr1.remove_vpp_config()
+        self.assertFalse(if_addr1.query_vpp_config())
+        self.assertTrue(if_addr2.query_vpp_config())
+        self.assertFalse(find_route(self, addr1, 128))
+        self.assertTrue(find_route(self, addr2, 128))
+
+        # delete second address, verify route removed
+        if_addr2.remove_vpp_config()
+        self.assertFalse(if_addr1.query_vpp_config())
+        self.assertFalse(find_route(self, addr1, 128))
+        self.assertFalse(find_route(self, addr2, 128))
+
+    def test_ipv6_ifaddr_del(self):
+        """Delete an interface address that does not exist"""
+
+        loopbacks = self.create_loopback_interfaces(1)
+        lo = self.lo_interfaces[0]
+
+        lo.config_ip6()
+        lo.admin_up()
+
+        #
+        # try and remove pg0's subnet from lo
+        #
+        with self.vapi.assert_negative_api_retval():
+            self.vapi.sw_interface_add_del_address(
+                sw_if_index=lo.sw_if_index, prefix=self.pg0.local_ip6_prefix, is_add=0
+            )
+
+
+class TestICMPv6Echo(VppTestCase):
+    """ICMPv6 Echo Test Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestICMPv6Echo, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestICMPv6Echo, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestICMPv6Echo, self).setUp()
+
+        # create 1 pg interface
+        self.create_pg_interfaces(range(1))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp(link_layer=True)
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestICMPv6Echo, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def test_icmpv6_echo(self):
+        """VPP replies to ICMPv6 Echo Request
+
+        Test scenario:
+
+            - Receive ICMPv6 Echo Request message on pg0 interface.
+            - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
+        """
+
+        # test both with global and local ipv6 addresses
+        dsts = (self.pg0.local_ip6, self.pg0.local_ip6_ll)
+        id = 0xB
+        seq = 5
+        data = b"\x0a" * 18
+        p = list()
+        for dst in dsts:
+            p.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / IPv6(src=self.pg0.remote_ip6, dst=dst)
+                    / ICMPv6EchoRequest(id=id, seq=seq, data=data)
+                )
+            )
+
+        self.pg0.add_stream(p)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        rxs = self.pg0.get_capture(len(dsts))
+
+        for rx, dst in zip(rxs, dsts):
+            ether = rx[Ether]
+            ipv6 = rx[IPv6]
+            icmpv6 = rx[ICMPv6EchoReply]
+            self.assertEqual(ether.src, self.pg0.local_mac)
+            self.assertEqual(ether.dst, self.pg0.remote_mac)
+            self.assertEqual(ipv6.src, dst)
+            self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
+            self.assertEqual(icmp6types[icmpv6.type], "Echo Reply")
+            self.assertEqual(icmpv6.id, id)
+            self.assertEqual(icmpv6.seq, seq)
+            self.assertEqual(icmpv6.data, data)
+
+
+class TestIPv6RD(TestIPv6ND):
+    """IPv6 Router Discovery Test Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv6RD, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv6RD, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPv6RD, self).setUp()
+
+        # create 2 pg interfaces
+        self.create_pg_interfaces(range(2))
+
+        self.interfaces = list(self.pg_interfaces)
+
+        # setup all interfaces
+        for i in self.interfaces:
+            i.admin_up()
+            i.config_ip6()
+
+    def tearDown(self):
+        for i in self.interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+        super(TestIPv6RD, self).tearDown()
+
+    def test_rd_send_router_solicitation(self):
+        """Verify router solicitation packets"""
+
+        count = 2
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index, mrc=count)
+        rx_list = self.pg1.get_capture(count, timeout=3)
+        self.assertEqual(len(rx_list), count)
+        for packet in rx_list:
+            self.assertEqual(packet.haslayer(IPv6), 1)
+            self.assertEqual(packet[IPv6].haslayer(ICMPv6ND_RS), 1)
+            dst = ip6_normalize(packet[IPv6].dst)
+            dst2 = ip6_normalize("ff02::2")
+            self.assert_equal(dst, dst2)
+            src = ip6_normalize(packet[IPv6].src)
+            src2 = ip6_normalize(self.pg1.local_ip6_ll)
+            self.assert_equal(src, src2)
+            self.assertTrue(bool(packet[ICMPv6ND_RS].haslayer(ICMPv6NDOptSrcLLAddr)))
+            self.assert_equal(packet[ICMPv6NDOptSrcLLAddr].lladdr, self.pg1.local_mac)
+
+    def verify_prefix_info(self, reported_prefix, prefix_option):
+        prefix = IPv6Network(
+            text_type(
+                prefix_option.getfieldval("prefix")
+                + "/"
+                + text_type(prefix_option.getfieldval("prefixlen"))
+            ),
+            strict=False,
+        )
+        self.assert_equal(
+            reported_prefix.prefix.network_address, prefix.network_address
+        )
+        L = prefix_option.getfieldval("L")
+        A = prefix_option.getfieldval("A")
+        option_flags = (L << 7) | (A << 6)
+        self.assert_equal(reported_prefix.flags, option_flags)
+        self.assert_equal(
+            reported_prefix.valid_time, prefix_option.getfieldval("validlifetime")
+        )
+        self.assert_equal(
+            reported_prefix.preferred_time,
+            prefix_option.getfieldval("preferredlifetime"),
+        )
+
+    def test_rd_receive_router_advertisement(self):
+        """Verify events triggered by received RA packets"""
+
+        self.vapi.want_ip6_ra_events(enable=1)
+
+        prefix_info_1 = ICMPv6NDOptPrefixInfo(
+            prefix="1::2",
+            prefixlen=50,
+            validlifetime=200,
+            preferredlifetime=500,
+            L=1,
+            A=1,
+        )
+
+        prefix_info_2 = ICMPv6NDOptPrefixInfo(
+            prefix="7::4",
+            prefixlen=20,
+            validlifetime=70,
+            preferredlifetime=1000,
+            L=1,
+            A=0,
+        )
+
+        p = (
+            Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+            / IPv6(dst=self.pg1.local_ip6_ll, src=mk_ll_addr(self.pg1.remote_mac))
+            / ICMPv6ND_RA()
+            / prefix_info_1
+            / prefix_info_2
+        )
+        self.pg1.add_stream([p])
+        self.pg_start()
+
+        ev = self.vapi.wait_for_event(10, "ip6_ra_event")
+
+        self.assert_equal(ev.current_hop_limit, 0)
+        self.assert_equal(ev.flags, 8)
+        self.assert_equal(ev.router_lifetime_in_sec, 1800)
+        self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
+        self.assert_equal(
+            ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0
+        )
+
+        self.assert_equal(ev.n_prefixes, 2)
+
+        self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
+        self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
+
+
+class TestIPv6RDControlPlane(TestIPv6ND):
+    """IPv6 Router Discovery Control Plane Test Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv6RDControlPlane, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv6RDControlPlane, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPv6RDControlPlane, self).setUp()
+
+        # create 1 pg interface
+        self.create_pg_interfaces(range(1))
+
+        self.interfaces = list(self.pg_interfaces)
+
+        # setup all interfaces
+        for i in self.interfaces:
+            i.admin_up()
+            i.config_ip6()
+
+    def tearDown(self):
+        super(TestIPv6RDControlPlane, self).tearDown()
+
+    @staticmethod
+    def create_ra_packet(pg, routerlifetime=None):
+        src_ip = pg.remote_ip6_ll
+        dst_ip = pg.local_ip6
+        if routerlifetime is not None:
+            ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
+        else:
+            ra = ICMPv6ND_RA()
+        p = (
+            Ether(dst=pg.local_mac, src=pg.remote_mac)
+            / IPv6(dst=dst_ip, src=src_ip)
+            / ra
+        )
+        return p
+
+    @staticmethod
+    def get_default_routes(fib):
+        list = []
+        for entry in fib:
+            if entry.route.prefix.prefixlen == 0:
+                for path in entry.route.paths:
+                    if path.sw_if_index != 0xFFFFFFFF:
+                        defaut_route = {}
+                        defaut_route["sw_if_index"] = path.sw_if_index
+                        defaut_route["next_hop"] = path.nh.address.ip6
+                        list.append(defaut_route)
+        return list
+
+    @staticmethod
+    def get_interface_addresses(fib, pg):
+        list = []
+        for entry in fib:
+            if entry.route.prefix.prefixlen == 128:
+                path = entry.route.paths[0]
+                if path.sw_if_index == pg.sw_if_index:
+                    list.append(str(entry.route.prefix.network_address))
+        return list
+
+    def wait_for_no_default_route(self, n_tries=50, s_time=1):
+        while n_tries:
+            fib = self.vapi.ip_route_dump(0, True)
+            default_routes = self.get_default_routes(fib)
+            if 0 == len(default_routes):
+                return True
+            n_tries = n_tries - 1
+            self.sleep(s_time)
+
+        return False
+
+    def test_all(self):
+        """Test handling of SLAAC addresses and default routes"""
+
+        fib = self.vapi.ip_route_dump(0, True)
+        default_routes = self.get_default_routes(fib)
+        initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
+        self.assertEqual(default_routes, [])
+        router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll))
+
+        self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
+
+        self.sleep(0.1)
+
+        # send RA
+        packet = (
+            self.create_ra_packet(self.pg0)
+            / ICMPv6NDOptPrefixInfo(
+                prefix="1::",
+                prefixlen=64,
+                validlifetime=2,
+                preferredlifetime=2,
+                L=1,
+                A=1,
+            )
+            / ICMPv6NDOptPrefixInfo(
+                prefix="7::",
+                prefixlen=20,
+                validlifetime=1500,
+                preferredlifetime=1000,
+                L=1,
+                A=0,
+            )
+        )
+        self.pg0.add_stream([packet])
+        self.pg_start()
+
+        self.sleep_on_vpp_time(0.1)
+
+        fib = self.vapi.ip_route_dump(0, True)
+
+        # check FIB for new address
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(initial_addresses)
+        self.assertEqual(len(new_addresses), 1)
+        prefix = IPv6Network(
+            text_type("%s/%d" % (list(new_addresses)[0], 20)), strict=False
+        )
+        self.assertEqual(prefix, IPv6Network(text_type("1::/20")))
+
+        # check FIB for new default route
+        default_routes = self.get_default_routes(fib)
+        self.assertEqual(len(default_routes), 1)
+        dr = default_routes[0]
+        self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index)
+        self.assertEqual(dr["next_hop"], router_address)
+
+        # send RA to delete default route
+        packet = self.create_ra_packet(self.pg0, routerlifetime=0)
+        self.pg0.add_stream([packet])
+        self.pg_start()
+
+        self.sleep_on_vpp_time(0.1)
+
+        # check that default route is deleted
+        fib = self.vapi.ip_route_dump(0, True)
+        default_routes = self.get_default_routes(fib)
+        self.assertEqual(len(default_routes), 0)
+
+        self.sleep_on_vpp_time(0.1)
+
+        # send RA
+        packet = self.create_ra_packet(self.pg0)
+        self.pg0.add_stream([packet])
+        self.pg_start()
+
+        self.sleep_on_vpp_time(0.1)
+
+        # check FIB for new default route
+        fib = self.vapi.ip_route_dump(0, True)
+        default_routes = self.get_default_routes(fib)
+        self.assertEqual(len(default_routes), 1)
+        dr = default_routes[0]
+        self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index)
+        self.assertEqual(dr["next_hop"], router_address)
+
+        # send RA, updating router lifetime to 1s
+        packet = self.create_ra_packet(self.pg0, 1)
+        self.pg0.add_stream([packet])
+        self.pg_start()
+
+        self.sleep_on_vpp_time(0.1)
+
+        # check that default route still exists
+        fib = self.vapi.ip_route_dump(0, True)
+        default_routes = self.get_default_routes(fib)
+        self.assertEqual(len(default_routes), 1)
+        dr = default_routes[0]
+        self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index)
+        self.assertEqual(dr["next_hop"], router_address)
+
+        self.sleep_on_vpp_time(1)
+
+        # check that default route is deleted
+        self.assertTrue(self.wait_for_no_default_route())
+
+        # check FIB still contains the SLAAC address
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(initial_addresses)
+
+        self.assertEqual(len(new_addresses), 1)
+        prefix = IPv6Network(
+            text_type("%s/%d" % (list(new_addresses)[0], 20)), strict=False
+        )
+        self.assertEqual(prefix, IPv6Network(text_type("1::/20")))
+
+        self.sleep_on_vpp_time(1)
+
+        # check that SLAAC address is deleted
+        fib = self.vapi.ip_route_dump(0, True)
+        addresses = set(self.get_interface_addresses(fib, self.pg0))
+        new_addresses = addresses.difference(initial_addresses)
+        self.assertEqual(len(new_addresses), 0)
 
 
 class IPv6NDProxyTest(TestIPv6ND):
-    """ IPv6 ND ProxyTest Case """
+    """IPv6 ND ProxyTest Case"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(IPv6NDProxyTest, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(IPv6NDProxyTest, cls).tearDownClass()
 
     def setUp(self):
         super(IPv6NDProxyTest, self).setUp()
@@ -923,7 +1660,7 @@ class IPv6NDProxyTest(TestIPv6ND):
         super(IPv6NDProxyTest, self).tearDown()
 
     def test_nd_proxy(self):
-        """ IPv6 Proxy ND """
+        """IPv6 Proxy ND"""
 
         #
         # Generate some hosts in the subnet that we are proxying
@@ -938,44 +1675,51 @@ class IPv6NDProxyTest(TestIPv6ND):
         # expect no response since it's from an address that is not
         # on the link that has the prefix configured
         #
-        ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
-                  IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6) /
-                  ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
-                  ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac))
+        ns_pg1 = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac)
+            / IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6)
+            / ICMPv6ND_NS(tgt=self.pg0.local_ip6)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac)
+        )
 
         self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
 
         #
         # Add proxy support for the host
         #
-        self.vapi.ip6_nd_proxy(
-            inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
-            self.pg1.sw_if_index)
+        self.vapi.ip6nd_proxy_add_del(
+            is_add=1,
+            ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
+            sw_if_index=self.pg1.sw_if_index,
+        )
 
         #
         # try that NS again. this time we expect an NA back
         #
-        self.send_and_expect_na(self.pg1, ns_pg1,
-                                "NS to proxy entry",
-                                dst_ip=self.pg0._remote_hosts[2].ip6,
-                                tgt_ip=self.pg0.local_ip6)
+        self.send_and_expect_na(
+            self.pg1,
+            ns_pg1,
+            "NS to proxy entry",
+            dst_ip=self.pg0._remote_hosts[2].ip6,
+            tgt_ip=self.pg0.local_ip6,
+        )
 
         #
         # ... and that we have an entry in the ND cache
         #
-        self.assertTrue(find_nbr(self,
-                                 self.pg1.sw_if_index,
-                                 self.pg0._remote_hosts[2].ip6,
-                                 inet=AF_INET6))
+        self.assertTrue(
+            find_nbr(self, self.pg1.sw_if_index, self.pg0._remote_hosts[2].ip6)
+        )
 
         #
         # ... and we can route traffic to it
         #
-        t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(dst=self.pg0._remote_hosts[2].ip6,
-                  src=self.pg0.remote_ip6) /
-             UDP(sport=10000, dport=20000) /
-             Raw('\xa5' * 100))
+        t = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(dst=self.pg0._remote_hosts[2].ip6, src=self.pg0.remote_ip6)
+            / inet6.UDP(sport=10000, dport=20000)
+            / Raw(b"\xa5" * 100)
+        )
 
         self.pg0.add_stream(t)
         self.pg_enable_capture(self.pg_interfaces)
@@ -992,47 +1736,58 @@ class IPv6NDProxyTest(TestIPv6ND):
         #
         # Test we proxy for the host on the main interface
         #
-        ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
-                  IPv6(dst=d, src=self.pg0.remote_ip6) /
-                  ICMPv6ND_NS(tgt=self.pg0._remote_hosts[2].ip6) /
-                  ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+        ns_pg0 = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac)
+            / IPv6(dst=d, src=self.pg0.remote_ip6)
+            / ICMPv6ND_NS(tgt=self.pg0._remote_hosts[2].ip6)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac)
+        )
 
-        self.send_and_expect_na(self.pg0, ns_pg0,
-                                "NS to proxy entry on main",
-                                tgt_ip=self.pg0._remote_hosts[2].ip6,
-                                dst_ip=self.pg0.remote_ip6)
+        self.send_and_expect_na(
+            self.pg0,
+            ns_pg0,
+            "NS to proxy entry on main",
+            tgt_ip=self.pg0._remote_hosts[2].ip6,
+            dst_ip=self.pg0.remote_ip6,
+        )
 
         #
         # Setup and resolve proxy for another host on another interface
         #
-        ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
-                  IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6) /
-                  ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
-                  ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac))
+        ns_pg2 = (
+            Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac)
+            / IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6)
+            / ICMPv6ND_NS(tgt=self.pg0.local_ip6)
+            / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac)
+        )
 
-        self.vapi.ip6_nd_proxy(
-            inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
-            self.pg2.sw_if_index)
+        self.vapi.ip6nd_proxy_add_del(
+            is_add=1,
+            ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
+            sw_if_index=self.pg2.sw_if_index,
+        )
 
-        self.send_and_expect_na(self.pg2, ns_pg2,
-                                "NS to proxy entry other interface",
-                                dst_ip=self.pg0._remote_hosts[3].ip6,
-                                tgt_ip=self.pg0.local_ip6)
+        self.send_and_expect_na(
+            self.pg2,
+            ns_pg2,
+            "NS to proxy entry other interface",
+            dst_ip=self.pg0._remote_hosts[3].ip6,
+            tgt_ip=self.pg0.local_ip6,
+        )
 
-        self.assertTrue(find_nbr(self,
-                                 self.pg2.sw_if_index,
-                                 self.pg0._remote_hosts[3].ip6,
-                                 inet=AF_INET6))
+        self.assertTrue(
+            find_nbr(self, self.pg2.sw_if_index, self.pg0._remote_hosts[3].ip6)
+        )
 
         #
         # hosts can communicate. pg2->pg1
         #
-        t2 = (Ether(dst=self.pg2.local_mac,
-                    src=self.pg0.remote_hosts[3].mac) /
-              IPv6(dst=self.pg0._remote_hosts[2].ip6,
-                   src=self.pg0._remote_hosts[3].ip6) /
-              UDP(sport=10000, dport=20000) /
-              Raw('\xa5' * 100))
+        t2 = (
+            Ether(dst=self.pg2.local_mac, src=self.pg0.remote_hosts[3].mac)
+            / IPv6(dst=self.pg0._remote_hosts[2].ip6, src=self.pg0._remote_hosts[3].ip6)
+            / inet6.UDP(sport=10000, dport=20000)
+            / Raw(b"\xa5" * 100)
+        )
 
         self.pg2.add_stream(t2)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1049,23 +1804,23 @@ class IPv6NDProxyTest(TestIPv6ND):
         #
         # remove the proxy configs
         #
-        self.vapi.ip6_nd_proxy(
-            inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
-            self.pg1.sw_if_index,
-            is_del=1)
-        self.vapi.ip6_nd_proxy(
-            inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
-            self.pg2.sw_if_index,
-            is_del=1)
-
-        self.assertFalse(find_nbr(self,
-                                  self.pg2.sw_if_index,
-                                  self.pg0._remote_hosts[3].ip6,
-                                  inet=AF_INET6))
-        self.assertFalse(find_nbr(self,
-                                  self.pg1.sw_if_index,
-                                  self.pg0._remote_hosts[2].ip6,
-                                  inet=AF_INET6))
+        self.vapi.ip6nd_proxy_add_del(
+            ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
+            sw_if_index=self.pg1.sw_if_index,
+            is_add=0,
+        )
+        self.vapi.ip6nd_proxy_add_del(
+            ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
+            sw_if_index=self.pg2.sw_if_index,
+            is_add=0,
+        )
+
+        self.assertFalse(
+            find_nbr(self, self.pg2.sw_if_index, self.pg0._remote_hosts[3].ip6)
+        )
+        self.assertFalse(
+            find_nbr(self, self.pg1.sw_if_index, self.pg0._remote_hosts[2].ip6)
+        )
 
         #
         # no longer proxy-ing...
@@ -1087,11 +1842,19 @@ class IPv6NDProxyTest(TestIPv6ND):
         self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
 
 
-class TestIPNull(VppTestCase):
-    """ IPv6 routes via NULL """
+class TestIP6Null(VppTestCase):
+    """IPv6 routes via NULL"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6Null, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6Null, cls).tearDownClass()
 
     def setUp(self):
-        super(TestIPNull, self).setUp()
+        super(TestIP6Null, self).setUp()
 
         # create 2 pg interfaces
         self.create_pg_interfaces(range(1))
@@ -1102,24 +1865,34 @@ class TestIPNull(VppTestCase):
             i.resolve_ndp()
 
     def tearDown(self):
-        super(TestIPNull, self).tearDown()
+        super(TestIP6Null, self).tearDown()
         for i in self.pg_interfaces:
             i.unconfig_ip6()
             i.admin_down()
 
     def test_ip_null(self):
-        """ IP NULL route """
+        """IP NULL route"""
 
-        p = (Ether(src=self.pg0.remote_mac,
-                   dst=self.pg0.local_mac) /
-             IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
-             UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst="2001::1")
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
 
         #
         # A route via IP NULL that will reply with ICMP unreachables
         #
-        ip_unreach = VppIpRoute(self, "2001::", 64, [], is_unreach=1, is_ip6=1)
+        ip_unreach = VppIpRoute(
+            self,
+            "2001::",
+            64,
+            [
+                VppRoutePath(
+                    "::", 0xFFFFFFFF, type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH
+                )
+            ],
+        )
         ip_unreach.add_vpp_config()
 
         self.pg0.add_stream(p)
@@ -1139,8 +1912,16 @@ class TestIPNull(VppTestCase):
         #
         # A route via IP NULL that will reply with ICMP prohibited
         #
-        ip_prohibit = VppIpRoute(self, "2001::1", 128, [],
-                                 is_prohibit=1, is_ip6=1)
+        ip_prohibit = VppIpRoute(
+            self,
+            "2001::1",
+            128,
+            [
+                VppRoutePath(
+                    "::", 0xFFFFFFFF, type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT
+                )
+            ],
+        )
         ip_prohibit.add_vpp_config()
 
         self.pg0.add_stream(p)
@@ -1155,16 +1936,24 @@ class TestIPNull(VppTestCase):
         self.assertEqual(icmp.code, 1)
 
 
-class TestIPDisabled(VppTestCase):
-    """ IPv6 disabled """
+class TestIP6Disabled(VppTestCase):
+    """IPv6 disabled"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6Disabled, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6Disabled, cls).tearDownClass()
 
     def setUp(self):
-        super(TestIPDisabled, self).setUp()
+        super(TestIP6Disabled, self).setUp()
 
         # create 2 pg interfaces
         self.create_pg_interfaces(range(2))
 
-        # PG0 is IP enalbed
+        # PG0 is IP enabled
         self.pg0.admin_up()
         self.pg0.config_ip6()
         self.pg0.resolve_ndp()
@@ -1173,22 +1962,16 @@ class TestIPDisabled(VppTestCase):
         self.pg1.admin_up()
 
     def tearDown(self):
-        super(TestIPDisabled, self).tearDown()
+        super(TestIP6Disabled, self).tearDown()
         for i in self.pg_interfaces:
             i.unconfig_ip4()
             i.admin_down()
 
-    def send_and_assert_no_replies(self, intf, pkts, remark):
-        intf.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        for i in self.pg_interfaces:
-            i.get_capture(0)
-            i.assert_nothing_captured(remark=remark)
-
     def test_ip_disabled(self):
-        """ IP Disabled """
+        """IP Disabled"""
 
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
         #
         # An (S,G).
         # one accepting interface, pg0, 2 forwarding interfaces
@@ -1196,25 +1979,32 @@ class TestIPDisabled(VppTestCase):
         route_ff_01 = VppIpMRoute(
             self,
             "::",
-            "ffef::1", 128,
-            MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
-            [VppMRoutePath(self.pg1.sw_if_index,
-                           MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
-             VppMRoutePath(self.pg0.sw_if_index,
-                           MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
-            is_ip6=1)
+            "ffef::1",
+            128,
+            MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+            [
+                VppMRoutePath(
+                    self.pg1.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT
+                ),
+                VppMRoutePath(
+                    self.pg0.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD
+                ),
+            ],
+        )
         route_ff_01.add_vpp_config()
 
-        pu = (Ether(src=self.pg1.remote_mac,
-                    dst=self.pg1.local_mac) /
-              IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
-              UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
-        pm = (Ether(src=self.pg1.remote_mac,
-                    dst=self.pg1.local_mac) /
-              IPv6(src="2001::1", dst="ffef::1") /
-              UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
+        pu = (
+            Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
+            / IPv6(src="2001::1", dst=self.pg0.remote_ip6)
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        pm = (
+            Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
+            / IPv6(src="2001::1", dst="ffef::1")
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
 
         #
         # PG1 does not forward IP traffic
@@ -1253,7 +2043,15 @@ class TestIPDisabled(VppTestCase):
 
 
 class TestIP6LoadBalance(VppTestCase):
-    """ IPv6 Load-Balancing """
+    """IPv6 Load-Balancing"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6LoadBalance, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6LoadBalance, cls).tearDownClass()
 
     def setUp(self):
         super(TestIP6LoadBalance, self).setUp()
@@ -1276,22 +2074,8 @@ class TestIP6LoadBalance(VppTestCase):
             i.disable_mpls()
         super(TestIP6LoadBalance, self).tearDown()
 
-    def send_and_expect_load_balancing(self, input, pkts, outputs):
-        input.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        for oo in outputs:
-            rx = oo._get_capture(1)
-            self.assertNotEqual(0, len(rx))
-
-    def send_and_expect_one_itf(self, input, pkts, itf):
-        input.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        rx = itf.get_capture(len(pkts))
-
     def test_ip6_load_balance(self):
-        """ IPv6 Load-Balancing """
+        """IPv6 Load-Balancing"""
 
         #
         # An array of packets that differ only in the destination port
@@ -1311,50 +2095,67 @@ class TestIP6LoadBalance(VppTestCase):
         src_ip_pkts = []
         src_mpls_pkts = []
 
-        for ii in range(65):
-            port_ip_hdr = (IPv6(dst="3000::1", src="3000:1::1") /
-                           UDP(sport=1234, dport=1234 + ii) /
-                           Raw('\xa5' * 100))
-            port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
-                                       dst=self.pg0.local_mac) /
-                                 port_ip_hdr))
-            port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
-                                         dst=self.pg0.local_mac) /
-                                   MPLS(label=66, ttl=2) /
-                                   port_ip_hdr))
-            port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
-                                              dst=self.pg0.local_mac) /
-                                        MPLS(label=67, ttl=2) /
-                                        MPLS(label=77, ttl=2) /
-                                        port_ip_hdr))
-            port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
-                                        dst=self.pg0.local_mac) /
-                                  MPLS(label=67, ttl=2) /
-                                  MPLS(label=14, ttl=2) /
-                                  MPLS(label=999, ttl=2) /
-                                  port_ip_hdr))
-            src_ip_hdr = (IPv6(dst="3000::1", src="3000:1::%d" % ii) /
-                          UDP(sport=1234, dport=1234) /
-                          Raw('\xa5' * 100))
-            src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
-                                      dst=self.pg0.local_mac) /
-                                src_ip_hdr))
-            src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
-                                        dst=self.pg0.local_mac) /
-                                  MPLS(label=66, ttl=2) /
-                                  src_ip_hdr))
-
-        #
-        # A route for the IP pacekts
-        #
-        route_3000_1 = VppIpRoute(self, "3000::1", 128,
-                                  [VppRoutePath(self.pg1.remote_ip6,
-                                                self.pg1.sw_if_index,
-                                                proto=DpoProto.DPO_PROTO_IP6),
-                                   VppRoutePath(self.pg2.remote_ip6,
-                                                self.pg2.sw_if_index,
-                                                proto=DpoProto.DPO_PROTO_IP6)],
-                                  is_ip6=1)
+        for ii in range(NUM_PKTS):
+            port_ip_hdr = (
+                IPv6(dst="3000::1", src="3000:1::1")
+                / inet6.UDP(sport=1234, dport=1234 + ii)
+                / Raw(b"\xa5" * 100)
+            )
+            port_ip_pkts.append(
+                (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / port_ip_hdr)
+            )
+            port_mpls_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / MPLS(label=66, ttl=2)
+                    / port_ip_hdr
+                )
+            )
+            port_mpls_neos_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / MPLS(label=67, ttl=2)
+                    / MPLS(label=77, ttl=2)
+                    / port_ip_hdr
+                )
+            )
+            port_ent_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / MPLS(label=67, ttl=2)
+                    / MPLS(label=14, ttl=2)
+                    / MPLS(label=999, ttl=2)
+                    / port_ip_hdr
+                )
+            )
+            src_ip_hdr = (
+                IPv6(dst="3000::1", src="3000:1::%d" % ii)
+                / inet6.UDP(sport=1234, dport=1234)
+                / Raw(b"\xa5" * 100)
+            )
+            src_ip_pkts.append(
+                (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / src_ip_hdr)
+            )
+            src_mpls_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / MPLS(label=66, ttl=2)
+                    / src_ip_hdr
+                )
+            )
+
+        #
+        # A route for the IP packets
+        #
+        route_3000_1 = VppIpRoute(
+            self,
+            "3000::1",
+            128,
+            [
+                VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index),
+                VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index),
+            ],
+        )
         route_3000_1.add_vpp_config()
 
         #
@@ -1366,15 +2167,15 @@ class TestIP6LoadBalance(VppTestCase):
         #
         # An MPLS route for the non-EOS packets
         #
-        route_67 = VppMplsRoute(self, 67, 0,
-                                [VppRoutePath(self.pg1.remote_ip6,
-                                              self.pg1.sw_if_index,
-                                              labels=[67],
-                                              proto=DpoProto.DPO_PROTO_IP6),
-                                 VppRoutePath(self.pg2.remote_ip6,
-                                              self.pg2.sw_if_index,
-                                              labels=[67],
-                                              proto=DpoProto.DPO_PROTO_IP6)])
+        route_67 = VppMplsRoute(
+            self,
+            67,
+            0,
+            [
+                VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index, labels=[67]),
+                VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index, labels=[67]),
+            ],
+        )
         route_67.add_vpp_config()
 
         #
@@ -1383,43 +2184,67 @@ class TestIP6LoadBalance(VppTestCase):
         #    src,dst
         # We are not going to ensure equal amounts of packets across each link,
         # since the hash algorithm is statistical and therefore this can never
-        # be guaranteed. But wuth 64 different packets we do expect some
+        # be guaranteed. But with 64 different packets we do expect some
         # balancing. So instead just ensure there is traffic on each link.
         #
-        self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
-                                            [self.pg1, self.pg2])
+        rx = self.send_and_expect_load_balancing(
+            self.pg0, port_ip_pkts, [self.pg1, self.pg2]
+        )
+        n_ip_pg0 = len(rx[0])
+        self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, [self.pg1, self.pg2])
+        self.send_and_expect_load_balancing(
+            self.pg0, port_mpls_pkts, [self.pg1, self.pg2]
+        )
+        self.send_and_expect_load_balancing(
+            self.pg0, src_mpls_pkts, [self.pg1, self.pg2]
+        )
+        rx = self.send_and_expect_load_balancing(
+            self.pg0, port_mpls_neos_pkts, [self.pg1, self.pg2]
+        )
+        n_mpls_pg0 = len(rx[0])
+
+        #
+        # change the router ID and expect the distribution changes
+        #
+        self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111)
+
+        rx = self.send_and_expect_load_balancing(
+            self.pg0, port_ip_pkts, [self.pg1, self.pg2]
+        )
+        self.assertNotEqual(n_ip_pg0, len(rx[0]))
+
+        rx = self.send_and_expect_load_balancing(
+            self.pg0, src_mpls_pkts, [self.pg1, self.pg2]
+        )
+        self.assertNotEqual(n_mpls_pg0, len(rx[0]))
 
         #
         # The packets with Entropy label in should not load-balance,
-        # since the Entorpy value is fixed.
+        # since the Entropy value is fixed.
         #
-        self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
+        self.send_and_expect_only(self.pg0, port_ent_pkts, self.pg1)
 
         #
         # change the flow hash config so it's only IP src,dst
         #  - now only the stream with differing source address will
         #    load-balance
         #
-        self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=0, dport=0)
+        self.vapi.set_ip_flow_hash(
+            vrf_id=0, src=1, dst=1, proto=1, sport=0, dport=0, is_ipv6=1
+        )
 
-        self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
-                                            [self.pg1, self.pg2])
-        self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
+        self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, [self.pg1, self.pg2])
+        self.send_and_expect_load_balancing(
+            self.pg0, src_mpls_pkts, [self.pg1, self.pg2]
+        )
+        self.send_and_expect_only(self.pg0, port_ip_pkts, self.pg2)
 
         #
         # change the flow hash config back to defaults
         #
-        self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=1, dport=1)
+        self.vapi.set_ip_flow_hash(
+            vrf_id=0, src=1, dst=1, sport=1, dport=1, proto=1, is_ipv6=1
+        )
 
         #
         # Recursive prefixes
@@ -1430,47 +2255,52 @@ class TestIP6LoadBalance(VppTestCase):
         src_pkts = []
 
         for ii in range(257):
-            port_pkts.append((Ether(src=self.pg0.remote_mac,
-                                    dst=self.pg0.local_mac) /
-                              IPv6(dst="4000::1", src="4000:1::1") /
-                              UDP(sport=1234, dport=1234 + ii) /
-                              Raw('\xa5' * 100)))
-            src_pkts.append((Ether(src=self.pg0.remote_mac,
-                                   dst=self.pg0.local_mac) /
-                             IPv6(dst="4000::1", src="4000:1::%d" % ii) /
-                             UDP(sport=1234, dport=1234) /
-                             Raw('\xa5' * 100)))
-
-        route_3000_2 = VppIpRoute(self, "3000::2", 128,
-                                  [VppRoutePath(self.pg3.remote_ip6,
-                                                self.pg3.sw_if_index,
-                                                proto=DpoProto.DPO_PROTO_IP6),
-                                   VppRoutePath(self.pg4.remote_ip6,
-                                                self.pg4.sw_if_index,
-                                                proto=DpoProto.DPO_PROTO_IP6)],
-                                  is_ip6=1)
+            port_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / IPv6(dst="4000::1", src="4000:1::1")
+                    / inet6.UDP(sport=1234, dport=1234 + ii)
+                    / Raw(b"\xa5" * 100)
+                )
+            )
+            src_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / IPv6(dst="4000::1", src="4000:1::%d" % ii)
+                    / inet6.UDP(sport=1234, dport=1234)
+                    / Raw(b"\xa5" * 100)
+                )
+            )
+
+        route_3000_2 = VppIpRoute(
+            self,
+            "3000::2",
+            128,
+            [
+                VppRoutePath(self.pg3.remote_ip6, self.pg3.sw_if_index),
+                VppRoutePath(self.pg4.remote_ip6, self.pg4.sw_if_index),
+            ],
+        )
         route_3000_2.add_vpp_config()
 
-        route_4000_1 = VppIpRoute(self, "4000::1", 128,
-                                  [VppRoutePath("3000::1",
-                                                0xffffffff,
-                                                proto=DpoProto.DPO_PROTO_IP6),
-                                   VppRoutePath("3000::2",
-                                                0xffffffff,
-                                                proto=DpoProto.DPO_PROTO_IP6)],
-                                  is_ip6=1)
+        route_4000_1 = VppIpRoute(
+            self,
+            "4000::1",
+            128,
+            [VppRoutePath("3000::1", 0xFFFFFFFF), VppRoutePath("3000::2", 0xFFFFFFFF)],
+        )
         route_4000_1.add_vpp_config()
 
         #
         # inject the packet on pg0 - expect load-balancing across all 4 paths
         #
         self.vapi.cli("clear trace")
-        self.send_and_expect_load_balancing(self.pg0, port_pkts,
-                                            [self.pg1, self.pg2,
-                                             self.pg3, self.pg4])
-        self.send_and_expect_load_balancing(self.pg0, src_pkts,
-                                            [self.pg1, self.pg2,
-                                             self.pg3, self.pg4])
+        self.send_and_expect_load_balancing(
+            self.pg0, port_pkts, [self.pg1, self.pg2, self.pg3, self.pg4]
+        )
+        self.send_and_expect_load_balancing(
+            self.pg0, src_pkts, [self.pg1, self.pg2, self.pg3, self.pg4]
+        )
 
         #
         # Recursive prefixes
@@ -1479,38 +2309,446 @@ class TestIP6LoadBalance(VppTestCase):
         port_pkts = []
 
         for ii in range(257):
-            port_pkts.append((Ether(src=self.pg0.remote_mac,
-                                    dst=self.pg0.local_mac) /
-                              IPv6(dst="6000::1", src="6000:1::1") /
-                              UDP(sport=1234, dport=1234 + ii) /
-                              Raw('\xa5' * 100)))
-
-        route_5000_2 = VppIpRoute(self, "5000::2", 128,
-                                  [VppRoutePath(self.pg3.remote_ip6,
-                                                self.pg3.sw_if_index,
-                                                proto=DpoProto.DPO_PROTO_IP6)],
-                                  is_ip6=1)
+            port_pkts.append(
+                (
+                    Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+                    / IPv6(dst="6000::1", src="6000:1::1")
+                    / inet6.UDP(sport=1234, dport=1234 + ii)
+                    / Raw(b"\xa5" * 100)
+                )
+            )
+
+        route_5000_2 = VppIpRoute(
+            self,
+            "5000::2",
+            128,
+            [VppRoutePath(self.pg3.remote_ip6, self.pg3.sw_if_index)],
+        )
         route_5000_2.add_vpp_config()
 
-        route_6000_1 = VppIpRoute(self, "6000::1", 128,
-                                  [VppRoutePath("5000::2",
-                                                0xffffffff,
-                                                proto=DpoProto.DPO_PROTO_IP6)],
-                                  is_ip6=1)
+        route_6000_1 = VppIpRoute(
+            self, "6000::1", 128, [VppRoutePath("5000::2", 0xFFFFFFFF)]
+        )
         route_6000_1.add_vpp_config()
 
         #
         # inject the packet on pg0 - expect load-balancing across all 4 paths
         #
         self.vapi.cli("clear trace")
-        self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
+        self.send_and_expect_only(self.pg0, port_pkts, self.pg3)
+
+
+class IP6PuntSetup(object):
+    """Setup for IPv6 Punt Police/Redirect"""
+
+    def punt_setup(self):
+        self.create_pg_interfaces(range(4))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp()
 
+        self.pkt = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6)
+            / inet6.TCP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
 
-class TestIP6Punt(VppTestCase):
-    """ IPv6 Punt Police/Redirect """
+    def punt_teardown(self):
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+
+class TestIP6Punt(IP6PuntSetup, VppTestCase):
+    """IPv6 Punt Police/Redirect"""
 
     def setUp(self):
         super(TestIP6Punt, self).setUp()
+        super(TestIP6Punt, self).punt_setup()
+
+    def tearDown(self):
+        super(TestIP6Punt, self).punt_teardown()
+        super(TestIP6Punt, self).tearDown()
+
+    def test_ip_punt(self):
+        """IP6 punt police and redirect"""
+
+        pkts = self.pkt * 1025
+
+        #
+        # Configure a punt redirect via pg1.
+        #
+        nh_addr = self.pg1.remote_ip6
+        ip_punt_redirect = VppIpPuntRedirect(
+            self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr
+        )
+        ip_punt_redirect.add_vpp_config()
+
+        self.send_and_expect(self.pg0, pkts, self.pg1)
+
+        #
+        # add a policer
+        #
+        policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1)
+        policer.add_vpp_config()
+        ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True)
+        ip_punt_policer.add_vpp_config()
+
+        self.vapi.cli("clear trace")
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        #
+        # the number of packet received should be greater than 0,
+        # but not equal to the number sent, since some were policed
+        #
+        rx = self.pg1._get_capture(1)
+        stats = policer.get_stats()
+
+        # Single rate policer - expect conform, violate but no exceed
+        self.assertGreater(stats["conform_packets"], 0)
+        self.assertEqual(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        self.assertGreater(len(rx), 0)
+        self.assertLess(len(rx), len(pkts))
+
+        #
+        # remove the policer. back to full rx
+        #
+        ip_punt_policer.remove_vpp_config()
+        policer.remove_vpp_config()
+        self.send_and_expect(self.pg0, pkts, self.pg1)
+
+        #
+        # remove the redirect. expect full drop.
+        #
+        ip_punt_redirect.remove_vpp_config()
+        self.send_and_assert_no_replies(self.pg0, pkts, "IP no punt config")
+
+        #
+        # Add a redirect that is not input port selective
+        #
+        ip_punt_redirect = VppIpPuntRedirect(
+            self, 0xFFFFFFFF, self.pg1.sw_if_index, nh_addr
+        )
+        ip_punt_redirect.add_vpp_config()
+        self.send_and_expect(self.pg0, pkts, self.pg1)
+        ip_punt_redirect.remove_vpp_config()
+
+    def test_ip_punt_dump(self):
+        """IP6 punt redirect dump"""
+
+        #
+        # Configure a punt redirects
+        #
+        nh_address = self.pg3.remote_ip6
+        ipr_03 = VppIpPuntRedirect(
+            self, self.pg0.sw_if_index, self.pg3.sw_if_index, nh_address
+        )
+        ipr_13 = VppIpPuntRedirect(
+            self, self.pg1.sw_if_index, self.pg3.sw_if_index, nh_address
+        )
+        ipr_23 = VppIpPuntRedirect(
+            self, self.pg2.sw_if_index, self.pg3.sw_if_index, "0::0"
+        )
+        ipr_03.add_vpp_config()
+        ipr_13.add_vpp_config()
+        ipr_23.add_vpp_config()
+
+        #
+        # Dump pg0 punt redirects
+        #
+        self.assertTrue(ipr_03.query_vpp_config())
+        self.assertTrue(ipr_13.query_vpp_config())
+        self.assertTrue(ipr_23.query_vpp_config())
+
+        #
+        # Dump punt redirects for all interfaces
+        #
+        punts = self.vapi.ip_punt_redirect_dump(0xFFFFFFFF, is_ipv6=1)
+        self.assertEqual(len(punts), 3)
+        for p in punts:
+            self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
+        self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
+        self.assertEqual(str(punts[2].punt.nh), "::")
+
+
+class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase):
+    """IPv6 Punt Police/Redirect"""
+
+    vpp_worker_count = 2
+
+    def setUp(self):
+        super(TestIP6PuntHandoff, self).setUp()
+        super(TestIP6PuntHandoff, self).punt_setup()
+
+    def tearDown(self):
+        super(TestIP6PuntHandoff, self).punt_teardown()
+        super(TestIP6PuntHandoff, self).tearDown()
+
+    def test_ip_punt(self):
+        """IP6 punt policer thread handoff"""
+        pkts = self.pkt * NUM_PKTS
+
+        #
+        # Configure a punt redirect via pg1.
+        #
+        nh_addr = self.pg1.remote_ip6
+        ip_punt_redirect = VppIpPuntRedirect(
+            self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr
+        )
+        ip_punt_redirect.add_vpp_config()
+
+        action_tx = PolicerAction(
+            VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT, 0
+        )
+        #
+        # This policer drops no packets, we are just
+        # testing that they get to the right thread.
+        #
+        policer = VppPolicer(
+            self,
+            "ip6-punt",
+            400,
+            0,
+            10,
+            0,
+            1,
+            0,
+            0,
+            False,
+            action_tx,
+            action_tx,
+            action_tx,
+        )
+        policer.add_vpp_config()
+        ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True)
+        ip_punt_policer.add_vpp_config()
+
+        for worker in [0, 1]:
+            self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+            if worker == 0:
+                self.logger.debug(self.vapi.cli("show trace max 100"))
+
+        # Combined stats, all threads
+        stats = policer.get_stats()
+
+        # Single rate policer - expect conform, violate but no exceed
+        self.assertGreater(stats["conform_packets"], 0)
+        self.assertEqual(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        # Worker 0, should have done all the policing
+        stats0 = policer.get_stats(worker=0)
+        self.assertEqual(stats, stats0)
+
+        # Worker 1, should have handed everything off
+        stats1 = policer.get_stats(worker=1)
+        self.assertEqual(stats1["conform_packets"], 0)
+        self.assertEqual(stats1["exceed_packets"], 0)
+        self.assertEqual(stats1["violate_packets"], 0)
+
+        # Bind the policer to worker 1 and repeat
+        policer.bind_vpp_config(1, True)
+        for worker in [0, 1]:
+            self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+            self.logger.debug(self.vapi.cli("show trace max 100"))
+
+        # The 2 workers should now have policed the same amount
+        stats = policer.get_stats()
+        stats0 = policer.get_stats(worker=0)
+        stats1 = policer.get_stats(worker=1)
+
+        self.assertGreater(stats0["conform_packets"], 0)
+        self.assertEqual(stats0["exceed_packets"], 0)
+        self.assertGreater(stats0["violate_packets"], 0)
+
+        self.assertGreater(stats1["conform_packets"], 0)
+        self.assertEqual(stats1["exceed_packets"], 0)
+        self.assertGreater(stats1["violate_packets"], 0)
+
+        self.assertEqual(
+            stats0["conform_packets"] + stats1["conform_packets"],
+            stats["conform_packets"],
+        )
+
+        self.assertEqual(
+            stats0["violate_packets"] + stats1["violate_packets"],
+            stats["violate_packets"],
+        )
+
+        # Unbind the policer and repeat
+        policer.bind_vpp_config(1, False)
+        for worker in [0, 1]:
+            self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+            self.logger.debug(self.vapi.cli("show trace max 100"))
+
+        # The policer should auto-bind to worker 0 when packets arrive
+        stats = policer.get_stats()
+        stats0new = policer.get_stats(worker=0)
+        stats1new = policer.get_stats(worker=1)
+
+        self.assertGreater(stats0new["conform_packets"], stats0["conform_packets"])
+        self.assertEqual(stats0new["exceed_packets"], 0)
+        self.assertGreater(stats0new["violate_packets"], stats0["violate_packets"])
+
+        self.assertEqual(stats1, stats1new)
+
+        #
+        # Clean up
+        #
+        ip_punt_policer.remove_vpp_config()
+        policer.remove_vpp_config()
+        ip_punt_redirect.remove_vpp_config()
+
+
+class TestIP6Deag(VppTestCase):
+    """IPv6 Deaggregate Routes"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6Deag, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6Deag, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIP6Deag, self).setUp()
+
+        self.create_pg_interfaces(range(3))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestIP6Deag, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def test_ip_deag(self):
+        """IP Deag Routes"""
+
+        #
+        # Create a table to be used for:
+        #  1 - another destination address lookup
+        #  2 - a source address lookup
+        #
+        table_dst = VppIpTable(self, 1, is_ip6=1)
+        table_src = VppIpTable(self, 2, is_ip6=1)
+        table_dst.add_vpp_config()
+        table_src.add_vpp_config()
+
+        #
+        # Add a route in the default table to point to a deag/
+        # second lookup in each of these tables
+        #
+        route_to_dst = VppIpRoute(
+            self, "1::1", 128, [VppRoutePath("::", 0xFFFFFFFF, nh_table_id=1)]
+        )
+        route_to_src = VppIpRoute(
+            self,
+            "1::2",
+            128,
+            [
+                VppRoutePath(
+                    "::",
+                    0xFFFFFFFF,
+                    nh_table_id=2,
+                    type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP,
+                )
+            ],
+        )
+
+        route_to_dst.add_vpp_config()
+        route_to_src.add_vpp_config()
+
+        #
+        # packets to these destination are dropped, since they'll
+        # hit the respective default routes in the second table
+        #
+        p_dst = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src="5::5", dst="1::1")
+            / inet6.TCP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        p_src = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src="2::2", dst="1::2")
+            / inet6.TCP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        pkts_dst = p_dst * 257
+        pkts_src = p_src * 257
+
+        self.send_and_assert_no_replies(self.pg0, pkts_dst, "IP in dst table")
+        self.send_and_assert_no_replies(self.pg0, pkts_src, "IP in src table")
+
+        #
+        # add a route in the dst table to forward via pg1
+        #
+        route_in_dst = VppIpRoute(
+            self,
+            "1::1",
+            128,
+            [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
+            table_id=1,
+        )
+        route_in_dst.add_vpp_config()
+
+        self.send_and_expect(self.pg0, pkts_dst, self.pg1)
+
+        #
+        # add a route in the src table to forward via pg2
+        #
+        route_in_src = VppIpRoute(
+            self,
+            "2::2",
+            128,
+            [VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index)],
+            table_id=2,
+        )
+        route_in_src.add_vpp_config()
+        self.send_and_expect(self.pg0, pkts_src, self.pg2)
+
+        #
+        # loop in the lookup DP
+        #
+        route_loop = VppIpRoute(self, "3::3", 128, [VppRoutePath("::", 0xFFFFFFFF)])
+        route_loop.add_vpp_config()
+
+        p_l = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src="3::4", dst="3::3")
+            / inet6.TCP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+
+        self.send_and_assert_no_replies(self.pg0, p_l * 257, "IP lookup loop")
+
+
+class TestIP6Input(VppTestCase):
+    """IPv6 Input Exception Test Cases"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6Input, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6Input, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIP6Input, self).setUp()
 
         self.create_pg_interfaces(range(2))
 
@@ -1520,56 +2758,1120 @@ class TestIP6Punt(VppTestCase):
             i.resolve_ndp()
 
     def tearDown(self):
-        super(TestIP6Punt, self).tearDown()
+        super(TestIP6Input, self).tearDown()
         for i in self.pg_interfaces:
             i.unconfig_ip6()
             i.admin_down()
 
-    def send_and_expect(self, input, pkts, output):
-        input.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        rx = output.get_capture(len(pkts))
-        return rx
+    def test_ip_input_icmp_reply(self):
+        """IP6 Input Exception - Return ICMP (3,0)"""
+        #
+        # hop limit - ICMP replies
+        #
+        p_version = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6, hlim=1)
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+
+        rxs = self.send_and_expect_some(self.pg0, p_version * NUM_PKTS, self.pg0)
+
+        for rx in rxs:
+            icmp = rx[ICMPv6TimeExceeded]
+            # 0: "hop limit exceeded in transit",
+            self.assertEqual((icmp.type, icmp.code), (3, 0))
+
+    icmpv6_data = "\x0a" * 18
+    all_0s = "::"
+    all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
+
+    @parameterized.expand(
+        [
+            # Name, src, dst, l4proto, msg, timeout
+            (
+                "src='iface',   dst='iface'",
+                None,
+                None,
+                inet6.UDP(sport=1234, dport=1234),
+                "funky version",
+                None,
+            ),
+            (
+                "src='All 0's', dst='iface'",
+                all_0s,
+                None,
+                ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data),
+                None,
+                0.1,
+            ),
+            (
+                "src='iface',   dst='All 0's'",
+                None,
+                all_0s,
+                ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data),
+                None,
+                0.1,
+            ),
+            (
+                "src='All 1's', dst='iface'",
+                all_1s,
+                None,
+                ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data),
+                None,
+                0.1,
+            ),
+            (
+                "src='iface',   dst='All 1's'",
+                None,
+                all_1s,
+                ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data),
+                None,
+                0.1,
+            ),
+            (
+                "src='All 1's', dst='All 1's'",
+                all_1s,
+                all_1s,
+                ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data),
+                None,
+                0.1,
+            ),
+        ]
+    )
+    def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
+
+        self._testMethodDoc = "IPv6 Input Exception - %s" % name
+
+        p_version = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(
+                src=src or self.pg0.remote_ip6,
+                dst=dst or self.pg1.remote_ip6,
+                version=3,
+            )
+            / l4
+            / Raw(b"\xa5" * 100)
+        )
 
-    def send_and_assert_no_replies(self, intf, pkts, remark):
-        self.vapi.cli("clear trace")
-        intf.add_stream(pkts)
+        self.send_and_assert_no_replies(
+            self.pg0, p_version * NUM_PKTS, remark=msg or "", timeout=timeout
+        )
+
+    def test_hop_by_hop(self):
+        """Hop-by-hop header test"""
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6)
+            / IPv6ExtHdrHopByHop()
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+
+        self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
+
+
+class TestIP6Replace(VppTestCase):
+    """IPv6 Table Replace"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6Replace, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6Replace, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIP6Replace, self).setUp()
+
+        self.create_pg_interfaces(range(4))
+
+        table_id = 1
+        self.tables = []
+
         for i in self.pg_interfaces:
-            i.get_capture(0)
-            i.assert_nothing_captured(remark=remark)
+            i.admin_up()
+            i.config_ip6()
+            i.generate_remote_hosts(2)
+            self.tables.append(VppIpTable(self, table_id, True).add_vpp_config())
+            table_id += 1
 
-    def test_ip_punt(self):
-        """ IP6 punt police and redirect """
+    def tearDown(self):
+        super(TestIP6Replace, self).tearDown()
+        for i in self.pg_interfaces:
+            i.admin_down()
+            i.unconfig_ip6()
+
+    def test_replace(self):
+        """IP Table Replace"""
+
+        MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+        MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+        N_ROUTES = 20
+        links = [self.pg0, self.pg1, self.pg2, self.pg3]
+        routes = [[], [], [], []]
+
+        # the sizes of 'empty' tables
+        for t in self.tables:
+            self.assertEqual(len(t.dump()), 2)
+            self.assertEqual(len(t.mdump()), 5)
+
+        # load up the tables with some routes
+        for ii, t in enumerate(self.tables):
+            for jj in range(1, N_ROUTES):
+                uni = VppIpRoute(
+                    self,
+                    "2001::%d" % jj if jj != 0 else "2001::",
+                    128,
+                    [
+                        VppRoutePath(
+                            links[ii].remote_hosts[0].ip6, links[ii].sw_if_index
+                        ),
+                        VppRoutePath(
+                            links[ii].remote_hosts[1].ip6, links[ii].sw_if_index
+                        ),
+                    ],
+                    table_id=t.table_id,
+                ).add_vpp_config()
+                multi = VppIpMRoute(
+                    self,
+                    "::",
+                    "ff:2001::%d" % jj,
+                    128,
+                    MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+                    [
+                        VppMRoutePath(
+                            self.pg0.sw_if_index,
+                            MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT,
+                            proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
+                        ),
+                        VppMRoutePath(
+                            self.pg1.sw_if_index,
+                            MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                            proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
+                        ),
+                        VppMRoutePath(
+                            self.pg2.sw_if_index,
+                            MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                            proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
+                        ),
+                        VppMRoutePath(
+                            self.pg3.sw_if_index,
+                            MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
+                            proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
+                        ),
+                    ],
+                    table_id=t.table_id,
+                ).add_vpp_config()
+                routes[ii].append({"uni": uni, "multi": multi})
+
+        #
+        # replace the tables a few times
+        #
+        for kk in range(3):
+            # replace each table
+            for t in self.tables:
+                t.replace_begin()
+
+            # all the routes are still there
+            for ii, t in enumerate(self.tables):
+                dump = t.dump()
+                mdump = t.mdump()
+                for r in routes[ii]:
+                    self.assertTrue(find_route_in_dump(dump, r["uni"], t))
+                    self.assertTrue(find_mroute_in_dump(mdump, r["multi"], t))
+
+            # redownload the even numbered routes
+            for ii, t in enumerate(self.tables):
+                for jj in range(0, N_ROUTES, 2):
+                    routes[ii][jj]["uni"].add_vpp_config()
+                    routes[ii][jj]["multi"].add_vpp_config()
+
+            # signal each table converged
+            for t in self.tables:
+                t.replace_end()
+
+            # we should find the even routes, but not the odd
+            for ii, t in enumerate(self.tables):
+                dump = t.dump()
+                mdump = t.mdump()
+                for jj in range(0, N_ROUTES, 2):
+                    self.assertTrue(find_route_in_dump(dump, routes[ii][jj]["uni"], t))
+                    self.assertTrue(
+                        find_mroute_in_dump(mdump, routes[ii][jj]["multi"], t)
+                    )
+                for jj in range(1, N_ROUTES - 1, 2):
+                    self.assertFalse(find_route_in_dump(dump, routes[ii][jj]["uni"], t))
+                    self.assertFalse(
+                        find_mroute_in_dump(mdump, routes[ii][jj]["multi"], t)
+                    )
+
+            # reload all the routes
+            for ii, t in enumerate(self.tables):
+                for r in routes[ii]:
+                    r["uni"].add_vpp_config()
+                    r["multi"].add_vpp_config()
+
+            # all the routes are still there
+            for ii, t in enumerate(self.tables):
+                dump = t.dump()
+                mdump = t.mdump()
+                for r in routes[ii]:
+                    self.assertTrue(find_route_in_dump(dump, r["uni"], t))
+                    self.assertTrue(find_mroute_in_dump(mdump, r["multi"], t))
+
+        #
+        # finally flush the tables for good measure
+        #
+        for t in self.tables:
+            t.flush()
+            self.assertEqual(len(t.dump()), 2)
+            self.assertEqual(len(t.mdump()), 5)
+
+
+class TestIP6AddrReplace(VppTestCase):
+    """IPv6 Interface Address Replace"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6AddrReplace, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6AddrReplace, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIP6AddrReplace, self).setUp()
+
+        self.create_pg_interfaces(range(4))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+    def tearDown(self):
+        super(TestIP6AddrReplace, self).tearDown()
+        for i in self.pg_interfaces:
+            i.admin_down()
+
+    def get_n_pfxs(self, intf):
+        return len(self.vapi.ip_address_dump(intf.sw_if_index, True))
+
+    def test_replace(self):
+        """IP interface address replace"""
+
+        intf_pfxs = [[], [], [], []]
+
+        # add prefixes to each of the interfaces
+        for i in range(len(self.pg_interfaces)):
+            intf = self.pg_interfaces[i]
+
+            # 2001:16:x::1/64
+            addr = "2001:16:%d::1" % intf.sw_if_index
+            a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
+            intf_pfxs[i].append(a)
+
+            # 2001:16:x::2/64 - a different address in the same subnet as above
+            addr = "2001:16:%d::2" % intf.sw_if_index
+            a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
+            intf_pfxs[i].append(a)
+
+            # 2001:15:x::2/64 - a different address and subnet
+            addr = "2001:15:%d::2" % intf.sw_if_index
+            a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
+            intf_pfxs[i].append(a)
+
+        # a dump should n_address in it
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 3)
+
+        #
+        # remove all the address thru a replace
+        #
+        self.vapi.sw_interface_address_replace_begin()
+        self.vapi.sw_interface_address_replace_end()
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 0)
+
+        #
+        # add all the interface addresses back
+        #
+        for p in intf_pfxs:
+            for v in p:
+                v.add_vpp_config()
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 3)
+
+        #
+        # replace again, but this time update/re-add the address on the first
+        # two interfaces
+        #
+        self.vapi.sw_interface_address_replace_begin()
+
+        for p in intf_pfxs[:2]:
+            for v in p:
+                v.add_vpp_config()
+
+        self.vapi.sw_interface_address_replace_end()
+
+        # on the first two the address still exist,
+        # on the other two they do not
+        for intf in self.pg_interfaces[:2]:
+            self.assertEqual(self.get_n_pfxs(intf), 3)
+        for p in intf_pfxs[:2]:
+            for v in p:
+                self.assertTrue(v.query_vpp_config())
+        for intf in self.pg_interfaces[2:]:
+            self.assertEqual(self.get_n_pfxs(intf), 0)
+
+        #
+        # add all the interface addresses back on the last two
+        #
+        for p in intf_pfxs[2:]:
+            for v in p:
+                v.add_vpp_config()
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 3)
+
+        #
+        # replace again, this time add different prefixes on all the interfaces
+        #
+        self.vapi.sw_interface_address_replace_begin()
 
-        p = (Ether(src=self.pg0.remote_mac,
-                   dst=self.pg0.local_mac) /
-             IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
-             TCP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+        pfxs = []
+        for intf in self.pg_interfaces:
+            # 2001:18:x::1/64
+            addr = "2001:18:%d::1" % intf.sw_if_index
+            pfxs.append(VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config())
 
-        pkts = p * 1025
+        self.vapi.sw_interface_address_replace_end()
+
+        # only .18 should exist on each interface
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 1)
+        for pfx in pfxs:
+            self.assertTrue(pfx.query_vpp_config())
+
+        #
+        # remove everything
+        #
+        self.vapi.sw_interface_address_replace_begin()
+        self.vapi.sw_interface_address_replace_end()
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 0)
+
+        #
+        # add prefixes to each interface. post-begin add the prefix from
+        # interface X onto interface Y. this would normally be an error
+        # since it would generate a 'duplicate address' warning. but in
+        # this case, since what is newly downloaded is sane, it's ok
+        #
+        for intf in self.pg_interfaces:
+            # 2001:18:x::1/64
+            addr = "2001:18:%d::1" % intf.sw_if_index
+            VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
+
+        self.vapi.sw_interface_address_replace_begin()
+
+        pfxs = []
+        for intf in self.pg_interfaces:
+            # 2001:18:x::1/64
+            addr = "2001:18:%d::1" % (intf.sw_if_index + 1)
+            pfxs.append(VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config())
+
+        self.vapi.sw_interface_address_replace_end()
+
+        self.logger.info(self.vapi.cli("sh int addr"))
+
+        for intf in self.pg_interfaces:
+            self.assertEqual(self.get_n_pfxs(intf), 1)
+        for pfx in pfxs:
+            self.assertTrue(pfx.query_vpp_config())
+
+
+class TestIP6LinkLocal(VppTestCase):
+    """IPv6 Link Local"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIP6LinkLocal, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIP6LinkLocal, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIP6LinkLocal, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+    def tearDown(self):
+        super(TestIP6LinkLocal, self).tearDown()
+        for i in self.pg_interfaces:
+            i.admin_down()
+
+    def test_ip6_ll(self):
+        """IPv6 Link Local"""
+
+        #
+        # two APIs to add a link local address.
+        #   1 - just like any other prefix
+        #   2 - with the special set LL API
+        #
+
+        #
+        # First with the API to set a 'normal' prefix
+        #
+        ll1 = "fe80:1::1"
+        ll2 = "fe80:2::2"
+        ll3 = "fe80:3::3"
+
+        VppNeighbor(
+            self, self.pg0.sw_if_index, self.pg0.remote_mac, ll2
+        ).add_vpp_config()
+
+        VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config()
+
+        #
+        # should be able to ping the ll
+        #
+        p_echo_request_1 = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=ll2, dst=ll1)
+            / ICMPv6EchoRequest()
+        )
+
+        self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
+
+        #
+        # change the link-local on pg0
+        #
+        v_ll3 = VppIpInterfaceAddress(self, self.pg0, ll3, 128).add_vpp_config()
+
+        p_echo_request_3 = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=ll2, dst=ll3)
+            / ICMPv6EchoRequest()
+        )
+
+        self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
+
+        #
+        # set a normal v6 prefix on the link
+        #
+        self.pg0.config_ip6()
+
+        self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
+
+        # the link-local cannot be removed
+        with self.vapi.assert_negative_api_retval():
+            v_ll3.remove_vpp_config()
+
+        #
+        # Use the specific link-local API on pg1
+        #
+        VppIp6LinkLocalAddress(self, self.pg1, ll1).add_vpp_config()
+        self.send_and_expect(self.pg1, [p_echo_request_1], self.pg1)
+
+        VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config()
+        self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1)
+
+    def test_ip6_ll_p2p(self):
+        """IPv6 Link Local P2P (GRE)"""
+
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+        gre_if = VppGreInterface(
+            self, self.pg0.local_ip4, self.pg0.remote_ip4
+        ).add_vpp_config()
+        gre_if.admin_up()
+
+        ll1 = "fe80:1::1"
+        ll2 = "fe80:2::2"
+
+        VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh ip6-ll gre0 fe80:2::2"))
+
+        p_echo_request_1 = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+            / GRE()
+            / IPv6(src=ll2, dst=ll1)
+            / ICMPv6EchoRequest()
+        )
+        self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
+
+        self.pg0.unconfig_ip4()
+        gre_if.remove_vpp_config()
+
+    def test_ip6_ll_p2mp(self):
+        """IPv6 Link Local P2MP (GRE)"""
+
+        self.pg0.config_ip4()
+        self.pg0.resolve_arp()
+
+        gre_if = VppGreInterface(
+            self,
+            self.pg0.local_ip4,
+            "0.0.0.0",
+            mode=(VppEnum.vl_api_tunnel_mode_t.TUNNEL_API_MODE_MP),
+        ).add_vpp_config()
+        gre_if.admin_up()
+
+        ll1 = "fe80:1::1"
+        ll2 = "fe80:2::2"
+
+        VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
+
+        p_echo_request_1 = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+            / GRE()
+            / IPv6(src=ll2, dst=ll1)
+            / ICMPv6EchoRequest()
+        )
+
+        # no route back at this point
+        self.send_and_assert_no_replies(self.pg0, [p_echo_request_1])
+
+        # add teib entry for the peer
+        teib = VppTeib(self, gre_if, ll2, self.pg0.remote_ip4)
+        teib.add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh ip6-ll gre0 %s" % ll2))
+        self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
+
+        # teardown
+        self.pg0.unconfig_ip4()
+
+
+class TestIPv6PathMTU(VppTestCase):
+    """IPv6 Path MTU"""
+
+    def setUp(self):
+        super(TestIPv6PathMTU, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        # setup all interfaces
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestIPv6PathMTU, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def test_path_mtu_local(self):
+        """Path MTU for attached neighbour"""
+
+        self.vapi.cli("set log class ip level debug")
+        #
+        # The goal here is not test that fragmentation works correctly,
+        # that's done elsewhere, the intent is to ensure that the Path MTU
+        # settings are honoured.
+        #
+
+        #
+        # IPv6 will only frag locally generated packets, so use tunnelled
+        # packets post encap
+        #
+        tun = VppIpIpTunInterface(
+            self, self.pg1, self.pg1.local_ip6, self.pg1.remote_ip6
+        )
+        tun.add_vpp_config()
+        tun.admin_up()
+        tun.config_ip6()
+
+        # set the interface MTU to a reasonable value
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0])
+
+        p_6k = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6)
+            / UDP(sport=1234, dport=5678)
+            / Raw(b"0xa" * 2000)
+        )
+        p_2k = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6)
+            / UDP(sport=1234, dport=5678)
+            / Raw(b"0xa" * 1000)
+        )
+        p_1k = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6)
+            / UDP(sport=1234, dport=5678)
+            / Raw(b"0xa" * 600)
+        )
+
+        nbr = VppNeighbor(
+            self, self.pg1.sw_if_index, self.pg1.remote_mac, self.pg1.remote_ip6
+        ).add_vpp_config()
+
+        # this is now the interface MTU frags
+        self.send_and_expect(self.pg0, [p_6k], self.pg1, n_rx=4)
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+        # drop the path MTU for this neighbour to below the interface MTU
+        # expect more frags
+        pmtu = VppIpPathMtu(self, self.pg1.remote_ip6, 1300).add_vpp_config()
+
+        # print/format the adj delegate and trackers
+        self.logger.info(self.vapi.cli("sh ip pmtu"))
+        self.logger.info(self.vapi.cli("sh adj 7"))
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # increase the path MTU to more than the interface
+        # expect to use the interface MTU
+        pmtu.modify(8192)
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+        # go back to an MTU from the path
+        pmtu.modify(1300)
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # raise the interface's MTU
+        # should still use that of the path
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2000, 0, 0, 0])
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # set path high and interface low
+        pmtu.modify(2000)
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1300, 0, 0, 0])
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # remove the path MTU
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0])
+        pmtu.modify(0)
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+    def test_path_mtu_remote(self):
+        """Path MTU for remote neighbour"""
+
+        self.vapi.cli("set log class ip level debug")
+        #
+        # The goal here is not test that fragmentation works correctly,
+        # that's done elsewhere, the intent is to ensure that the Path MTU
+        # settings are honoured.
+        #
+        tun_dst = "2001::1"
+
+        route = VppIpRoute(
+            self, tun_dst, 64, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)]
+        ).add_vpp_config()
+
+        #
+        # IPv6 will only frag locally generated packets, so use tunnelled
+        # packets post encap
+        #
+        tun = VppIpIpTunInterface(self, self.pg1, self.pg1.local_ip6, tun_dst)
+        tun.add_vpp_config()
+        tun.admin_up()
+        tun.config_ip6()
+
+        # set the interface MTU to a reasonable value
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0])
+
+        p_2k = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6)
+            / UDP(sport=1234, dport=5678)
+            / Raw(b"0xa" * 1000)
+        )
+        p_1k = (
+            Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6)
+            / UDP(sport=1234, dport=5678)
+            / Raw(b"0xa" * 600)
+        )
+
+        nbr = VppNeighbor(
+            self, self.pg1.sw_if_index, self.pg1.remote_mac, self.pg1.remote_ip6
+        ).add_vpp_config()
+
+        # this is now the interface MTU frags
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+        # drop the path MTU for this neighbour to below the interface MTU
+        # expect more frags
+        pmtu = VppIpPathMtu(self, tun_dst, 1300).add_vpp_config()
+
+        # print/format the fib entry/dpo
+        self.logger.info(self.vapi.cli("sh ip6 fib 2001::1"))
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # increase the path MTU to more than the interface
+        # expect to use the interface MTU
+        pmtu.modify(8192)
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+        # go back to an MTU from the path
+        pmtu.modify(1300)
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # raise the interface's MTU
+        # should still use that of the path
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2000, 0, 0, 0])
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # turn the tun_dst into an attached neighbour
+        route.modify([VppRoutePath("::", self.pg1.sw_if_index)])
+        nbr2 = VppNeighbor(
+            self, self.pg1.sw_if_index, self.pg1.remote_mac, tun_dst
+        ).add_vpp_config()
+
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # add back to not attached
+        nbr2.remove_vpp_config()
+        route.modify([VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)])
+
+        # set path high and interface low
+        pmtu.modify(2000)
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1300, 0, 0, 0])
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+        # remove the path MTU
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0])
+        pmtu.remove_vpp_config()
+        self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+        self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+
+class TestIPFibSource(VppTestCase):
+    """IPv6 Table FibSource"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPFibSource, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPFibSource, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPFibSource, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_arp()
+            i.generate_remote_hosts(2)
+            i.configure_ipv6_neighbors()
+
+    def tearDown(self):
+        super(TestIPFibSource, self).tearDown()
+        for i in self.pg_interfaces:
+            i.admin_down()
+            i.unconfig_ip4()
+
+    def test_fib_source(self):
+        """IP Table FibSource"""
+
+        routes = self.vapi.ip_route_v2_dump(0, True)
+
+        # 2 interfaces (4 routes) + 2 specials + 4 neighbours = 10 routes
+        self.assertEqual(len(routes), 10)
+
+        # dump all the sources in the FIB
+        sources = self.vapi.fib_source_dump()
+        for source in sources:
+            if source.src.name == "API":
+                api_source = source.src
+            if source.src.name == "interface":
+                intf_source = source.src
+            if source.src.name == "adjacency":
+                adj_source = source.src
+            if source.src.name == "special":
+                special_source = source.src
+            if source.src.name == "default-route":
+                dr_source = source.src
+
+        # dump the individual route types
+        routes = self.vapi.ip_route_v2_dump(0, True, src=adj_source.id)
+        self.assertEqual(len(routes), 4)
+        routes = self.vapi.ip_route_v2_dump(0, True, src=intf_source.id)
+        self.assertEqual(len(routes), 4)
+        routes = self.vapi.ip_route_v2_dump(0, True, src=special_source.id)
+        self.assertEqual(len(routes), 1)
+        routes = self.vapi.ip_route_v2_dump(0, True, src=dr_source.id)
+        self.assertEqual(len(routes), 1)
+
+        # add a new soure that'a better than the API
+        self.vapi.fib_source_add(
+            src={"name": "bgp", "priority": api_source.priority - 1}
+        )
+
+        # dump all the sources to check our new one is there
+        sources = self.vapi.fib_source_dump()
+
+        for source in sources:
+            if source.src.name == "bgp":
+                bgp_source = source.src
+
+        self.assertTrue(bgp_source)
+        self.assertEqual(bgp_source.priority, api_source.priority - 1)
+
+        # add a route with the default API source
+        r1 = VppIpRouteV2(
+            self,
+            "2001::1",
+            128,
+            [VppRoutePath(self.pg0.remote_ip6, self.pg0.sw_if_index)],
+        ).add_vpp_config()
+
+        r2 = VppIpRouteV2(
+            self,
+            "2001::1",
+            128,
+            [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
+            src=bgp_source.id,
+        ).add_vpp_config()
+
+        # ensure the BGP source takes priority
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst="2001::1")
+            / inet6.UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+
+        self.send_and_expect(self.pg0, [p], self.pg1)
+
+        r2.remove_vpp_config()
+        r1.remove_vpp_config()
+
+        self.assertFalse(find_route(self, "2001::1", 128))
+
+
+class TestIPxAF(VppTestCase):
+    """IP cross AF"""
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPxAF, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPxAF, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPxAF, self).setUp()
+
+        self.create_pg_interfaces(range(2))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.config_ip4()
+            i.resolve_arp()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestIPxAF, self).tearDown()
+        for i in self.pg_interfaces:
+            i.admin_down()
+            i.unconfig_ip4()
+            i.unconfig_ip6()
+
+    def test_x_af(self):
+        """Cross AF routing"""
+
+        N_PKTS = 63
+        # a v4 route via a v6 attached next-hop
+        VppIpRoute(
+            self,
+            "1.1.1.1",
+            32,
+            [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IP(src=self.pg0.remote_ip4, dst="1.1.1.1")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, "1.1.1.1")
+
+        # a v6 route via a v4 attached next-hop
+        VppIpRoute(
+            self,
+            "2001::1",
+            128,
+            [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)],
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst="2001::1")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IPv6].dst, "2001::1")
+
+        # a recursive v4 route via a v6 next-hop (from above)
+        VppIpRoute(
+            self, "2.2.2.2", 32, [VppRoutePath("2001::1", 0xFFFFFFFF)]
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IP(src=self.pg0.remote_ip4, dst="2.2.2.2")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        # a recursive v4 route via a v6 next-hop
+        VppIpRoute(
+            self, "2.2.2.3", 32, [VppRoutePath(self.pg1.remote_ip6, 0xFFFFFFFF)]
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IP(src=self.pg0.remote_ip4, dst="2.2.2.3")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        # a recursive v6 route via a v4 next-hop
+        VppIpRoute(
+            self, "3001::1", 128, [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)]
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst="3001::1")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IPv6].dst, "3001::1")
+
+        VppIpRoute(
+            self, "3001::2", 128, [VppRoutePath("1.1.1.1", 0xFFFFFFFF)]
+        ).add_vpp_config()
+
+        p = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst="3001::2")
+            / UDP(sport=1234, dport=1234)
+            / Raw(b"\xa5" * 100)
+        )
+        rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IPv6].dst, "3001::2")
+
+
+class TestIPv6Punt(VppTestCase):
+    """IPv6 Punt Police/Redirect"""
+
+    def setUp(self):
+        super(TestIPv6Punt, self).setUp()
+        self.create_pg_interfaces(range(4))
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip6()
+            i.resolve_ndp()
+
+    def tearDown(self):
+        super(TestIPv6Punt, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip6()
+            i.admin_down()
+
+    def test_ip6_punt(self):
+        """IPv6 punt police and redirect"""
+
+        # use UDP packet that have a port we need to explicitly
+        # register to get punted.
+        pt_l4 = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4
+        af_ip6 = VppEnum.vl_api_address_family_t.ADDRESS_IP6
+        udp_proto = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP
+        punt_udp = {
+            "type": pt_l4,
+            "punt": {
+                "l4": {
+                    "af": af_ip6,
+                    "protocol": udp_proto,
+                    "port": 7654,
+                }
+            },
+        }
+
+        self.vapi.set_punt(is_add=1, punt=punt_udp)
+
+        pkts = (
+            Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
+            / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6)
+            / UDP(sport=1234, dport=7654)
+            / Raw(b"\xa5" * 100)
+        ) * 1025
 
         #
         # Configure a punt redirect via pg1.
         #
-        nh_addr = inet_pton(AF_INET6,
-                            self.pg1.remote_ip6)
-        self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
-                                   self.pg1.sw_if_index,
-                                   nh_addr,
-                                   is_ip6=1)
+        nh_addr = self.pg1.remote_ip6
+        ip_punt_redirect = VppIpPuntRedirect(
+            self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr
+        )
+        ip_punt_redirect.add_vpp_config()
 
         self.send_and_expect(self.pg0, pkts, self.pg1)
 
         #
         # add a policer
         #
-        policer = self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
-                                            rate_type=1)
-        self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
+        policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1)
+        policer.add_vpp_config()
+        ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True)
+        ip_punt_policer.add_vpp_config()
 
         self.vapi.cli("clear trace")
         self.pg0.add_stream(pkts)
@@ -1577,46 +3879,81 @@ class TestIP6Punt(VppTestCase):
         self.pg_start()
 
         #
-        # the number of packet recieved should be greater than 0,
+        # the number of packet received should be greater than 0,
         # but not equal to the number sent, since some were policed
         #
         rx = self.pg1._get_capture(1)
-        self.assertTrue(len(rx) > 0)
-        self.assertTrue(len(rx) < len(pkts))
+
+        stats = policer.get_stats()
+
+        # Single rate policer - expect conform, violate but no exceed
+        self.assertGreater(stats["conform_packets"], 0)
+        self.assertEqual(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        self.assertGreater(len(rx), 0)
+        self.assertLess(len(rx), len(pkts))
 
         #
-        # remove the poilcer. back to full rx
+        # remove the policer. back to full rx
         #
-        self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
-        self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
-                                  rate_type=1, is_add=0)
+        ip_punt_policer.remove_vpp_config()
+        policer.remove_vpp_config()
         self.send_and_expect(self.pg0, pkts, self.pg1)
 
         #
         # remove the redirect. expect full drop.
         #
-        self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
-                                   self.pg1.sw_if_index,
-                                   nh_addr,
-                                   is_add=0,
-                                   is_ip6=1)
-        self.send_and_assert_no_replies(self.pg0, pkts,
-                                        "IP no punt config")
+        ip_punt_redirect.remove_vpp_config()
+        self.send_and_assert_no_replies(self.pg0, pkts, "IP no punt config")
 
         #
         # Add a redirect that is not input port selective
         #
-        self.vapi.ip_punt_redirect(0xffffffff,
-                                   self.pg1.sw_if_index,
-                                   nh_addr,
-                                   is_ip6=1)
+        ip_punt_redirect = VppIpPuntRedirect(
+            self, 0xFFFFFFFF, self.pg1.sw_if_index, nh_addr
+        )
+        ip_punt_redirect.add_vpp_config()
         self.send_and_expect(self.pg0, pkts, self.pg1)
+        ip_punt_redirect.remove_vpp_config()
+
+    def test_ip6_punt_dump(self):
+        """IPv6 punt redirect dump"""
+
+        #
+        # Configure a punt redirects
+        #
+        nh_address = self.pg3.remote_ip6
+        ipr_03 = VppIpPuntRedirect(
+            self, self.pg0.sw_if_index, self.pg3.sw_if_index, nh_address
+        )
+        ipr_13 = VppIpPuntRedirect(
+            self, self.pg1.sw_if_index, self.pg3.sw_if_index, nh_address
+        )
+        ipr_23 = VppIpPuntRedirect(
+            self, self.pg2.sw_if_index, self.pg3.sw_if_index, "::"
+        )
+        ipr_03.add_vpp_config()
+        ipr_13.add_vpp_config()
+        ipr_23.add_vpp_config()
+
+        #
+        # Dump pg0 punt redirects
+        #
+        self.assertTrue(ipr_03.query_vpp_config())
+        self.assertTrue(ipr_13.query_vpp_config())
+        self.assertTrue(ipr_23.query_vpp_config())
+
+        #
+        # Dump punt redirects for all interfaces
+        #
+        punts = self.vapi.ip_punt_redirect_dump(sw_if_index=0xFFFFFFFF, is_ipv6=True)
+        self.assertEqual(len(punts), 3)
+        for p in punts:
+            self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
+        self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
+        self.assertEqual(str(punts[2].punt.nh), "::")
 
-        self.vapi.ip_punt_redirect(0xffffffff,
-                                   self.pg1.sw_if_index,
-                                   nh_addr,
-                                   is_add=0,
-                                   is_ip6=1)
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main(testRunner=VppTestRunner)