ip: Replace Sematics for Interface IP addresses
[vpp.git] / src / plugins / gbp / test / test_gbp.py
index a064929..5ff71f4 100644 (file)
@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
 
-from socket import AF_INET, AF_INET6
+from socket import AF_INET, AF_INET6, inet_pton, inet_ntop
 import unittest
+from ipaddress import ip_address, IPv4Network, IPv6Network
 
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether, ARP, Dot1Q
@@ -11,7 +12,6 @@ from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6NDOptSrcLLAddr, \
 from scapy.utils6 import in6_getnsma, in6_getnsmac
 from scapy.layers.vxlan import VXLAN
 from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
-from scapy.utils import inet_pton, inet_ntop
 
 from framework import VppTestCase, VppTestRunner
 from vpp_object import VppObject
@@ -22,11 +22,12 @@ from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, \
 from vpp_l2 import VppBridgeDomain, VppBridgeDomainPort, \
     VppBridgeDomainArpEntry, VppL2FibEntry, find_bridge_domain_port, VppL2Vtr
 from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
-from vpp_ip import VppIpAddress, VppIpPrefix, DpoProto
+from vpp_ip import DpoProto, get_dpo_proto
 from vpp_papi import VppEnum, MACAddress
 from vpp_vxlan_gbp_tunnel import find_vxlan_gbp_tunnel, INDEX_INVALID, \
     VppVxlanGbpTunnel
 from vpp_neighbor import VppNeighbor
+from vpp_acl import AclRule, VppAcl
 try:
     text_type = unicode
 except NameError:
@@ -36,9 +37,9 @@ NUM_PKTS = 67
 
 
 def find_gbp_endpoint(test, sw_if_index=None, ip=None, mac=None,
-                      tep=None, sclass=None):
+                      tep=None, sclass=None, flags=None):
     if ip:
-        vip = VppIpAddress(ip)
+        vip = ip
     if mac:
         vmac = MACAddress(mac)
 
@@ -46,9 +47,10 @@ def find_gbp_endpoint(test, sw_if_index=None, ip=None, mac=None,
 
     for ep in eps:
         if tep:
-            src = VppIpAddress(tep[0])
-            dst = VppIpAddress(tep[1])
-            if src != ep.endpoint.tun.src or dst != ep.endpoint.tun.dst:
+            src = tep[0]
+            dst = tep[1]
+            if src != str(ep.endpoint.tun.src) or \
+               dst != str(ep.endpoint.tun.dst):
                 continue
         if sw_if_index:
             if ep.endpoint.sw_if_index != sw_if_index:
@@ -56,12 +58,15 @@ def find_gbp_endpoint(test, sw_if_index=None, ip=None, mac=None,
         if sclass:
             if ep.endpoint.sclass != sclass:
                 continue
+        if flags:
+            if flags != (flags & ep.endpoint.flags):
+                continue
         if ip:
             for eip in ep.endpoint.ips:
-                if vip == eip:
+                if vip == str(eip):
                     return True
         if mac:
-            if vmac.packed == ep.endpoint.mac:
+            if vmac == ep.endpoint.mac:
                 return True
 
     return False
@@ -118,10 +123,10 @@ class VppGbpEndpoint(VppObject):
         self.epg = epg
         self.recirc = recirc
 
-        self._ip4 = VppIpAddress(ip4)
-        self._fip4 = VppIpAddress(fip4)
-        self._ip6 = VppIpAddress(ip6)
-        self._fip6 = VppIpAddress(fip6)
+        self._ip4 = ip4
+        self._fip4 = fip4
+        self._ip6 = ip6
+        self._fip6 = fip6
 
         if mac:
             self.vmac = MACAddress(self.itf.remote_mac)
@@ -129,18 +134,18 @@ class VppGbpEndpoint(VppObject):
             self.vmac = MACAddress("00:00:00:00:00:00")
 
         self.flags = flags
-        self.tun_src = VppIpAddress(tun_src)
-        self.tun_dst = VppIpAddress(tun_dst)
+        self.tun_src = tun_src
+        self.tun_dst = tun_dst
 
     def add_vpp_config(self):
         res = self._test.vapi.gbp_endpoint_add(
             self.itf.sw_if_index,
-            [self.ip4.encode(), self.ip6.encode()],
+            [self.ip4, self.ip6],
             self.vmac.packed,
             self.epg.sclass,
             self.flags,
-            self.tun_src.encode(),
-            self.tun_dst.encode())
+            self.tun_src,
+            self.tun_dst)
         self.handle = res.handle
         self._test.registry.register(self, self._test.logger)
 
@@ -150,13 +155,13 @@ class VppGbpEndpoint(VppObject):
     def object_id(self):
         return "gbp-endpoint:[%d==%d:%s:%d]" % (self.handle,
                                                 self.itf.sw_if_index,
-                                                self.ip4.address,
+                                                self.ip4,
                                                 self.epg.sclass)
 
     def query_vpp_config(self):
         return find_gbp_endpoint(self._test,
                                  self.itf.sw_if_index,
-                                 self.ip4.address)
+                                 self.ip4)
 
 
 class VppGbpRecirc(VppObject):
@@ -238,7 +243,13 @@ class VppGbpSubnet(VppObject):
                  type, sw_if_index=None, sclass=None):
         self._test = test
         self.rd_id = rd.rd_id
-        self.prefix = VppIpPrefix(address, address_len)
+        a = ip_address(address)
+        if 4 == a.version:
+            self.prefix = IPv4Network("%s/%d" % (address, address_len),
+                                      strict=False)
+        else:
+            self.prefix = IPv6Network("%s/%d" % (address, address_len),
+                                      strict=False)
         self.type = type
         self.sw_if_index = sw_if_index
         self.sclass = sclass
@@ -247,7 +258,7 @@ class VppGbpSubnet(VppObject):
         self._test.vapi.gbp_subnet_add_del(
             1,
             self.rd_id,
-            self.prefix.encode(),
+            self.prefix,
             self.type,
             sw_if_index=self.sw_if_index if self.sw_if_index else 0xffffffff,
             sclass=self.sclass if self.sclass else 0xffff)
@@ -257,7 +268,7 @@ class VppGbpSubnet(VppObject):
         self._test.vapi.gbp_subnet_add_del(
             0,
             self.rd_id,
-            self.prefix.encode(),
+            self.prefix,
             self.type)
 
     def object_id(self):
@@ -292,8 +303,8 @@ class VppGbpEndpointGroup(VppObject):
         self._test = test
         self.uplink = uplink
         self.bvi = bvi
-        self.bvi_ip4 = VppIpAddress(bvi_ip4)
-        self.bvi_ip6 = VppIpAddress(bvi_ip6)
+        self.bvi_ip4 = bvi_ip4
+        self.bvi_ip6 = bvi_ip6
         self.vnid = vnid
         self.bd = bd
         self.rd = rd
@@ -424,7 +435,7 @@ class VppGbpContractNextHop():
         self.rd = rd
 
     def encode(self):
-        return {'ip': self.ip.encode(),
+        return {'ip': self.ip,
                 'mac': self.mac.packed,
                 'bd_id': self.bd.bd.bd_id,
                 'rd_id': self.rd.rd_id}
@@ -561,58 +572,6 @@ class VppGbpVxlanTunnel(VppInterface):
         return find_gbp_vxlan(self._test, self.vni)
 
 
-class VppGbpAcl(VppObject):
-    """
-    GBP Acl
-    """
-
-    def __init__(self, test):
-        self._test = test
-        self.acl_index = 4294967295
-
-    def create_rule(self, is_ipv6=0, permit_deny=0, proto=-1,
-                    s_prefix=0, s_ip=b'\x00\x00\x00\x00', sport_from=0,
-                    sport_to=65535, d_prefix=0, d_ip=b'\x00\x00\x00\x00',
-                    dport_from=0, dport_to=65535):
-        if proto == -1 or proto == 0:
-            sport_to = 0
-            dport_to = sport_to
-        elif proto == 1 or proto == 58:
-            sport_to = 255
-            dport_to = sport_to
-        rule = ({'is_permit': permit_deny, 'is_ipv6': is_ipv6, 'proto': proto,
-                 'srcport_or_icmptype_first': sport_from,
-                 'srcport_or_icmptype_last': sport_to,
-                 'src_ip_prefix_len': s_prefix,
-                 'src_ip_addr': s_ip,
-                 'dstport_or_icmpcode_first': dport_from,
-                 'dstport_or_icmpcode_last': dport_to,
-                 'dst_ip_prefix_len': d_prefix,
-                 'dst_ip_addr': d_ip})
-        return rule
-
-    def add_vpp_config(self, rules):
-
-        reply = self._test.vapi.acl_add_replace(acl_index=self.acl_index,
-                                                r=rules,
-                                                tag=b'GBPTest')
-        self.acl_index = reply.acl_index
-        return self.acl_index
-
-    def remove_vpp_config(self):
-        self._test.vapi.acl_del(self.acl_index)
-
-    def object_id(self):
-        return "gbp-acl:[%d]" % (self.acl_index)
-
-    def query_vpp_config(self):
-        cs = self._test.vapi.acl_dump()
-        for c in cs:
-            if c.acl_index == self.acl_index:
-                return True
-        return False
-
-
 class TestGBP(VppTestCase):
     """ GBP Test Case """
 
@@ -873,8 +832,10 @@ class TestGBP(VppTestCase):
         for epg in epgs:
             # IP config on the BVI interfaces
             if epg != epgs[1] and epg != epgs[4]:
-                VppIpInterfaceBind(self, epg.bvi, epg.rd.t4).add_vpp_config()
-                VppIpInterfaceBind(self, epg.bvi, epg.rd.t6).add_vpp_config()
+                b4 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t4).add_vpp_config()
+                b6 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t6).add_vpp_config()
                 epg.bvi.set_mac(self.router_mac)
 
                 # The BVIs are NAT inside interfaces
@@ -886,10 +847,12 @@ class TestGBP(VppTestCase):
                     is_add=1, flags=flags,
                     sw_if_index=epg.bvi.sw_if_index)
 
-            if_ip4 = VppIpInterfaceAddress(self, epg.bvi, epg.bvi_ip4, 32)
-            if_ip6 = VppIpInterfaceAddress(self, epg.bvi, epg.bvi_ip6, 128)
-            if_ip4.add_vpp_config()
-            if_ip6.add_vpp_config()
+            if_ip4 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip4, 32,
+                                           bind=b4).add_vpp_config()
+            if_ip6 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip6, 128,
+                                           bind=b6).add_vpp_config()
 
             # EPG uplink interfaces in the RD
             VppIpInterfaceBind(self, epg.uplink, epg.rd.t4).add_vpp_config()
@@ -898,10 +861,10 @@ class TestGBP(VppTestCase):
             # add the BD ARP termination entry for BVI IP
             epg.bd_arp_ip4 = VppBridgeDomainArpEntry(self, epg.bd.bd,
                                                      str(self.router_mac),
-                                                     epg.bvi_ip4.address)
+                                                     epg.bvi_ip4)
             epg.bd_arp_ip6 = VppBridgeDomainArpEntry(self, epg.bd.bd,
                                                      str(self.router_mac),
-                                                     epg.bvi_ip6.address)
+                                                     epg.bvi_ip6)
             epg.bd_arp_ip4.add_vpp_config()
             epg.bd_arp_ip6.add_vpp_config()
 
@@ -938,19 +901,19 @@ class TestGBP(VppTestCase):
             #
             for (ip, fip) in zip(ep.ips, ep.fips):
                 # Add static mappings for each EP from the 10/8 to 11/8 network
-                if ip.af == AF_INET:
+                if ip_address(ip).version == 4:
                     flags = self.config_flags.NAT_IS_ADDR_ONLY
                     self.vapi.nat44_add_del_static_mapping(
                         is_add=1,
-                        local_ip_address=ip.bytes,
-                        external_ip_address=fip.bytes,
+                        local_ip_address=ip,
+                        external_ip_address=fip,
                         external_sw_if_index=0xFFFFFFFF,
                         vrf_id=0,
                         flags=flags)
                 else:
                     self.vapi.nat66_add_del_static_mapping(
-                        local_ip_address=ip.bytes,
-                        external_ip_address=fip.bytes,
+                        local_ip_address=ip,
+                        external_ip_address=fip,
                         vrf_id=0, is_add=1)
 
             # VPP EP create ...
@@ -964,27 +927,27 @@ class TestGBP(VppTestCase):
             for ii, ip in enumerate(ep.ips):
                 p = rx[ii]
 
-                if ip.is_ip6:
+                if ip_address(ip).version == 6:
                     self.assertTrue(p.haslayer(ICMPv6ND_NA))
-                    self.assertEqual(p[ICMPv6ND_NA].tgt, ip.address)
+                    self.assertEqual(p[ICMPv6ND_NA].tgt, ip)
                 else:
                     self.assertTrue(p.haslayer(ARP))
-                    self.assertEqual(p[ARP].psrc, ip.address)
-                    self.assertEqual(p[ARP].pdst, ip.address)
+                    self.assertEqual(p[ARP].psrc, ip)
+                    self.assertEqual(p[ARP].pdst, ip)
 
             # add the BD ARP termination entry for floating IP
             for fip in ep.fips:
                 ba = VppBridgeDomainArpEntry(self, epg_nat.bd.bd, ep.mac,
-                                             fip.address)
+                                             fip)
                 ba.add_vpp_config()
 
                 # floating IPs route via EPG recirc
                 r = VppIpRoute(
-                    self, fip.address, fip.length,
-                    [VppRoutePath(fip.address,
+                    self, fip, ip_address(fip).max_prefixlen,
+                    [VppRoutePath(fip,
                                   ep.recirc.recirc.sw_if_index,
                                   type=FibPathType.FIB_PATH_TYPE_DVR,
-                                  proto=fip.dpo_proto)],
+                                  proto=get_dpo_proto(fip))],
                     table_id=20)
                 r.add_vpp_config()
 
@@ -1021,17 +984,17 @@ class TestGBP(VppTestCase):
                    ARP(op="who-has",
                        hwdst="ff:ff:ff:ff:ff:ff",
                        hwsrc=self.pg0.remote_mac,
-                       pdst=epgs[0].bvi_ip4.address,
-                       psrc=eps[0].ip4.address))
+                       pdst=epgs[0].bvi_ip4,
+                       psrc=eps[0].ip4))
 
         self.send_and_expect(self.pg0, [pkt_arp], self.pg0)
 
-        nsma = in6_getnsma(inet_pton(AF_INET6, eps[0].ip6.address))
+        nsma = in6_getnsma(inet_pton(AF_INET6, eps[0].ip6))
         d = inet_ntop(AF_INET6, nsma)
         pkt_nd = (Ether(dst=in6_getnsmac(nsma),
                         src=self.pg0.remote_mac) /
-                  IPv6(dst=d, src=eps[0].ip6.address) /
-                  ICMPv6ND_NS(tgt=epgs[0].bvi_ip6.address) /
+                  IPv6(dst=d, src=eps[0].ip6) /
+                  ICMPv6ND_NS(tgt=epgs[0].bvi_ip6) /
                   ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
         self.send_and_expect(self.pg0, [pkt_nd], self.pg0)
 
@@ -1040,9 +1003,9 @@ class TestGBP(VppTestCase):
         #
         pkt_bcast = (Ether(dst="ff:ff:ff:ff:ff:ff",
                            src=self.pg0.remote_mac) /
-                     IP(src=eps[0].ip4.address, dst="232.1.1.1") /
+                     IP(src=eps[0].ip4, dst="232.1.1.1") /
                      UDP(sport=1234, dport=1234) /
-                     Raw('\xa5' * 100))
+                     Raw(b'\xa5' * 100))
 
         self.vapi.cli("clear trace")
         self.pg0.add_stream(pkt_bcast)
@@ -1060,26 +1023,26 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg_220_ip4 = (Ether(src=self.pg0.remote_mac,
                                        dst=str(self.router_mac)) /
-                                 IP(src=eps[0].ip4.address,
+                                 IP(src=eps[0].ip4,
                                     dst="10.0.0.99") /
                                  UDP(sport=1234, dport=1234) /
-                                 Raw('\xa5' * 100))
+                                 Raw(b'\xa5' * 100))
         pkt_inter_epg_222_ip4 = (Ether(src=self.pg0.remote_mac,
                                        dst=str(self.router_mac)) /
-                                 IP(src=eps[0].ip4.address,
+                                 IP(src=eps[0].ip4,
                                     dst="10.0.1.99") /
                                  UDP(sport=1234, dport=1234) /
-                                 Raw('\xa5' * 100))
+                                 Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(self.pg0,
                                         pkt_intra_epg_220_ip4 * NUM_PKTS)
 
         pkt_inter_epg_222_ip6 = (Ether(src=self.pg0.remote_mac,
                                        dst=str(self.router_mac)) /
-                                 IPv6(src=eps[0].ip6.address,
+                                 IPv6(src=eps[0].ip6,
                                       dst="2001:10::99") /
                                  UDP(sport=1234, dport=1234) /
-                                 Raw('\xa5' * 100))
+                                 Raw(b'\xa5' * 100))
         self.send_and_assert_no_replies(self.pg0,
                                         pkt_inter_epg_222_ip6 * NUM_PKTS)
 
@@ -1137,10 +1100,10 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg_220_to_uplink = (Ether(src=self.pg0.remote_mac,
                                              dst="00:00:00:33:44:55") /
-                                       IP(src=eps[0].ip4.address,
+                                       IP(src=eps[0].ip4,
                                           dst="10.0.0.99") /
                                        UDP(sport=1234, dport=1234) /
-                                       Raw('\xa5' * 100))
+                                       Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged(eps[0].itf,
                                      pkt_intra_epg_220_to_uplink * NUM_PKTS,
@@ -1151,10 +1114,10 @@ class TestGBP(VppTestCase):
 
         pkt_intra_epg_221_to_uplink = (Ether(src=self.pg2.remote_mac,
                                              dst="00:00:00:33:44:66") /
-                                       IP(src=eps[0].ip4.address,
+                                       IP(src=eps[0].ip4,
                                           dst="10.0.0.99") /
                                        UDP(sport=1234, dport=1234) /
-                                       Raw('\xa5' * 100))
+                                       Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged(eps[2].itf,
                                      pkt_intra_epg_221_to_uplink * NUM_PKTS,
@@ -1165,10 +1128,10 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg_220_from_uplink = (Ether(src="00:00:00:33:44:55",
                                                dst=self.pg0.remote_mac) /
-                                         IP(src=eps[0].ip4.address,
+                                         IP(src=eps[0].ip4,
                                             dst="10.0.0.99") /
                                          UDP(sport=1234, dport=1234) /
-                                         Raw('\xa5' * 100))
+                                         Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged(self.pg4,
                                      pkt_intra_epg_220_from_uplink * NUM_PKTS,
@@ -1180,10 +1143,10 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg = (Ether(src=self.pg0.remote_mac,
                                dst=self.pg1.remote_mac) /
-                         IP(src=eps[0].ip4.address,
-                            dst=eps[1].ip4.address) /
+                         IP(src=eps[0].ip4,
+                            dst=eps[1].ip4) /
                          UDP(sport=1234, dport=1234) /
-                         Raw('\xa5' * 100))
+                         Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged(self.pg0,
                                      pkt_intra_epg * NUM_PKTS,
@@ -1195,22 +1158,22 @@ class TestGBP(VppTestCase):
         #
         pkt_inter_epg_220_to_221 = (Ether(src=self.pg0.remote_mac,
                                           dst=self.pg2.remote_mac) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[2].ip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[2].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
                                           dst=self.pg0.remote_mac) /
-                                    IP(src=eps[2].ip4.address,
-                                       dst=eps[0].ip4.address) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         pkt_inter_epg_220_to_222 = (Ether(src=self.pg0.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[3].ip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[3].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(eps[0].itf,
                                         pkt_inter_epg_220_to_221 * NUM_PKTS)
@@ -1220,12 +1183,14 @@ class TestGBP(VppTestCase):
         #
         # A uni-directional contract from EPG 220 -> 221
         #
-        acl = VppGbpAcl(self)
-        rule = acl.create_rule(permit_deny=1, proto=17)
-        rule2 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule, rule2])
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
         c1 = VppGbpContract(
-            self, 400, epgs[0].sclass, epgs[1].sclass, acl_index,
+            self, 400, epgs[0].sclass, epgs[1].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1247,7 +1212,7 @@ class TestGBP(VppTestCase):
         # contract for the return direction
         #
         c2 = VppGbpContract(
-            self, 400, epgs[1].sclass, epgs[0].sclass, acl_index,
+            self, 400, epgs[1].sclass, epgs[0].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1291,7 +1256,7 @@ class TestGBP(VppTestCase):
         # A uni-directional contract from EPG 220 -> 222 'L3 routed'
         #
         c3 = VppGbpContract(
-            self, 400, epgs[0].sclass, epgs[2].sclass, acl_index,
+            self, 400, epgs[0].sclass, epgs[2].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1380,25 +1345,23 @@ class TestGBP(VppTestCase):
         #
         pkt_inter_epg_220_to_global = (Ether(src=self.pg0.remote_mac,
                                              dst=str(self.router_mac)) /
-                                       IP(src=eps[0].ip4.address,
+                                       IP(src=eps[0].ip4,
                                           dst="1.1.1.1") /
                                        UDP(sport=1234, dport=1234) /
-                                       Raw('\xa5' * 100))
+                                       Raw(b'\xa5' * 100))
 
         # no policy yet
         self.send_and_assert_no_replies(eps[0].itf,
                                         pkt_inter_epg_220_to_global * NUM_PKTS)
+        rule = AclRule(is_permit=1, proto=17, ports=1234)
+        rule2 = AclRule(is_permit=1, proto=17, ports=1234,
+                        src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)))
+        acl2 = VppAcl(self, rules=[rule, rule2])
+        acl2.add_vpp_config()
 
-        acl2 = VppGbpAcl(self)
-        rule = acl2.create_rule(permit_deny=1, proto=17, sport_from=1234,
-                                sport_to=1234, dport_from=1234, dport_to=1234)
-        rule2 = acl2.create_rule(is_ipv6=1, permit_deny=1, proto=17,
-                                 sport_from=1234, sport_to=1234,
-                                 dport_from=1234, dport_to=1234)
-
-        acl_index2 = acl2.add_vpp_config([rule, rule2])
         c4 = VppGbpContract(
-            self, 400, epgs[0].sclass, epgs[3].sclass, acl_index2,
+            self, 400, epgs[0].sclass, epgs[3].sclass, acl2.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1413,35 +1376,35 @@ class TestGBP(VppTestCase):
         self.send_and_expect_natted(eps[0].itf,
                                     pkt_inter_epg_220_to_global * NUM_PKTS,
                                     self.pg7,
-                                    eps[0].fip4.address)
+                                    eps[0].fip4)
 
         pkt_inter_epg_220_to_global = (Ether(src=self.pg0.remote_mac,
                                              dst=str(self.router_mac)) /
-                                       IPv6(src=eps[0].ip6.address,
+                                       IPv6(src=eps[0].ip6,
                                             dst="6001::1") /
                                        UDP(sport=1234, dport=1234) /
-                                       Raw('\xa5' * 100))
+                                       Raw(b'\xa5' * 100))
 
         self.send_and_expect_natted6(self.pg0,
                                      pkt_inter_epg_220_to_global * NUM_PKTS,
                                      self.pg7,
-                                     eps[0].fip6.address)
+                                     eps[0].fip6)
 
         #
         # From a global address to an EP: OUT2IN
         #
         pkt_inter_epg_220_from_global = (Ether(src=str(self.router_mac),
                                                dst=self.pg0.remote_mac) /
-                                         IP(dst=eps[0].fip4.address,
+                                         IP(dst=eps[0].fip4,
                                             src="1.1.1.1") /
                                          UDP(sport=1234, dport=1234) /
-                                         Raw('\xa5' * 100))
+                                         Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(
             self.pg7, pkt_inter_epg_220_from_global * NUM_PKTS)
 
         c5 = VppGbpContract(
-            self, 400, epgs[3].sclass, epgs[0].sclass, acl_index2,
+            self, 400, epgs[3].sclass, epgs[0].sclass, acl2.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1456,20 +1419,20 @@ class TestGBP(VppTestCase):
         self.send_and_expect_unnatted(self.pg7,
                                       pkt_inter_epg_220_from_global * NUM_PKTS,
                                       eps[0].itf,
-                                      eps[0].ip4.address)
+                                      eps[0].ip4)
 
         pkt_inter_epg_220_from_global = (Ether(src=str(self.router_mac),
                                                dst=self.pg0.remote_mac) /
-                                         IPv6(dst=eps[0].fip6.address,
+                                         IPv6(dst=eps[0].fip6,
                                               src="6001::1") /
                                          UDP(sport=1234, dport=1234) /
-                                         Raw('\xa5' * 100))
+                                         Raw(b'\xa5' * 100))
 
         self.send_and_expect_unnatted6(
             self.pg7,
             pkt_inter_epg_220_from_global * NUM_PKTS,
             eps[0].itf,
-            eps[0].ip6.address)
+            eps[0].ip6)
 
         #
         # From a local VM to another local VM using resp. public addresses:
@@ -1477,30 +1440,30 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg_220_global = (Ether(src=self.pg0.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[1].fip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[1].fip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_expect_double_natted(eps[0].itf,
                                            pkt_intra_epg_220_global * NUM_PKTS,
                                            eps[1].itf,
-                                           eps[0].fip4.address,
-                                           eps[1].ip4.address)
+                                           eps[0].fip4,
+                                           eps[1].ip4)
 
         pkt_intra_epg_220_global = (Ether(src=self.pg0.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IPv6(src=eps[0].ip6.address,
-                                         dst=eps[1].fip6.address) /
+                                    IPv6(src=eps[0].ip6,
+                                         dst=eps[1].fip6) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_expect_double_natted6(
             eps[0].itf,
             pkt_intra_epg_220_global * NUM_PKTS,
             eps[1].itf,
-            eps[0].fip6.address,
-            eps[1].ip6.address)
+            eps[0].fip6,
+            eps[1].ip6)
 
         #
         # cleanup
@@ -1510,14 +1473,14 @@ class TestGBP(VppTestCase):
             flags = self.config_flags.NAT_IS_ADDR_ONLY
             self.vapi.nat44_add_del_static_mapping(
                 is_add=0,
-                local_ip_address=ep.ip4.bytes,
-                external_ip_address=ep.fip4.bytes,
+                local_ip_address=ep.ip4,
+                external_ip_address=ep.fip4,
                 external_sw_if_index=0xFFFFFFFF,
                 vrf_id=0,
                 flags=flags)
             self.vapi.nat66_add_del_static_mapping(
-                local_ip_address=ep.ip6.bytes,
-                external_ip_address=ep.fip6.bytes,
+                local_ip_address=ep.ip6,
+                external_ip_address=ep.fip6,
                 vrf_id=0, is_add=0)
 
         for epg in epgs:
@@ -1542,12 +1505,17 @@ class TestGBP(VppTestCase):
 
     def wait_for_ep_timeout(self, sw_if_index=None, ip=None, mac=None,
                             tep=None, n_tries=100, s_time=1):
+        # only learnt EP can timeout
+        ep_flags = VppEnum.vl_api_gbp_endpoint_flags_t
+        flags = ep_flags.GBP_API_ENDPOINT_FLAG_LEARNT
         while (n_tries):
-            if not find_gbp_endpoint(self, sw_if_index, ip, mac, tep=tep):
+            if not find_gbp_endpoint(self, sw_if_index, ip, mac, tep=tep,
+                                     flags=flags):
                 return True
             n_tries = n_tries - 1
             self.sleep(s_time)
-        self.assertFalse(find_gbp_endpoint(self, sw_if_index, ip, mac))
+        self.assertFalse(find_gbp_endpoint(self, sw_if_index, ip, mac, tep=tep,
+                                           flags=flags))
         return False
 
     def test_gbp_learn_l2(self):
@@ -1622,13 +1590,13 @@ class TestGBP(VppTestCase):
                                       None, self.loop0,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_220.add_vpp_config()
         epg_330 = VppGbpEndpointGroup(self, 330, 113, rd1, gbd1,
                                       None, self.loop1,
                                       "10.0.1.128",
                                       "2001:11::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_330.add_vpp_config()
 
         #
@@ -1651,7 +1619,7 @@ class TestGBP(VppTestCase):
                             "2001:10::1", "3001::1")
         ep.add_vpp_config()
 
-        self.assertTrue(find_route(self, ep.ip4.address, 32, table_id=1))
+        self.assertTrue(find_route(self, ep.ip4, 32, table_id=1))
 
         # a packet with an sclass from an unknown EPG
         p = (Ether(src=self.pg2.remote_mac,
@@ -1661,9 +1629,9 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=99, gpid=88, flags=0x88) /
              Ether(src=learnt[0]["mac"], dst=ep.mac) /
-             IP(src=learnt[0]["ip"], dst=ep.ip4.address) /
+             IP(src=learnt[0]["ip"], dst=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(self.pg2, p)
 
@@ -1698,9 +1666,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=112, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -1798,7 +1766,7 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=112, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -1841,9 +1809,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=112, flags=0x88, gpflags="D") /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
 
@@ -1866,9 +1834,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=112, flags=0xc8) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
 
@@ -1882,9 +1850,9 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh l2fib bd_id 1"))
         for l in learnt:
             p = (Ether(src=ep.mac, dst=l['mac']) /
-                 IP(dst=l['ip'], src=ep.ip4.address) /
+                 IP(dst=l['ip'], src=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * 17, self.pg2)
 
@@ -1918,9 +1886,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=113, flags=0x88, gpflags='A') /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
 
@@ -1933,9 +1901,9 @@ class TestGBP(VppTestCase):
         # only test 1 EP as the others could timeout
         #
         p = (Ether(src=ep.mac, dst=l['mac']) /
-             IP(dst=learnt[0]['ip'], src=ep.ip4.address) /
+             IP(dst=learnt[0]['ip'], src=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(self.pg0, [p])
 
@@ -1951,9 +1919,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=113, flags=0x88, gpflags='A') /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
 
@@ -1964,12 +1932,14 @@ class TestGBP(VppTestCase):
         #
         # Add the contract so they can talk
         #
-        acl = VppGbpAcl(self)
-        rule = acl.create_rule(permit_deny=1, proto=17)
-        rule2 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule, rule2])
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
         c1 = VppGbpContract(
-            self, 401, epg_220.sclass, epg_330.sclass, acl_index,
+            self, 401, epg_220.sclass, epg_330.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -1983,9 +1953,9 @@ class TestGBP(VppTestCase):
 
         for l in learnt:
             p = (Ether(src=ep.mac, dst=l['mac']) /
-                 IP(dst=l['ip'], src=ep.ip4.address) /
+                 IP(dst=l['ip'], src=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             self.send_and_expect(self.pg0, [p], self.pg2)
 
@@ -1995,17 +1965,17 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh gbp bridge"))
         self.logger.info(self.vapi.cli("sh bridge-domain 1 detail"))
         p_uu = (Ether(src=ep.mac, dst="00:11:11:11:11:11") /
-                IP(dst="10.0.0.133", src=ep.ip4.address) /
+                IP(dst="10.0.0.133", src=ep.ip4) /
                 UDP(sport=1234, dport=1234) /
-                Raw('\xa5' * 100))
+                Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(ep.itf, [p_uu], gbd1.uu_fwd)
 
         self.logger.info(self.vapi.cli("sh bridge 1 detail"))
 
         p_bm = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
-                IP(dst="10.0.0.133", src=ep.ip4.address) /
+                IP(dst="10.0.0.133", src=ep.ip4) /
                 UDP(sport=1234, dport=1234) /
-                Raw('\xa5' * 100))
+                Raw(b'\xa5' * 100))
         rxs = self.send_and_expect_only(ep.itf, [p_bm], tun_bm.mcast_itf)
 
         for rx in rxs:
@@ -2020,12 +1990,14 @@ class TestGBP(VppTestCase):
             self.assertFalse(rx[VXLAN].gpflags.A)
             self.assertFalse(rx[VXLAN].gpflags.D)
 
-        acl = VppGbpAcl(self)
-        rule = acl.create_rule(permit_deny=1, proto=17)
-        rule2 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule, rule2])
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule, rule2])
+        acl.add_vpp_config()
+
         c2 = VppGbpContract(
-            self, 401, epg_330.sclass, epg_220.sclass, acl_index,
+            self, 401, epg_330.sclass, epg_220.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -2052,9 +2024,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=113, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IPv6(src=l['ip6'], dst=ep.ip6.address) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
@@ -2084,9 +2056,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=113, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IPv6(src=l['ip6'], dst=ep.ip6.address) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * 1, self.pg0)
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
@@ -2104,9 +2076,9 @@ class TestGBP(VppTestCase):
         #
         for l in learnt:
             p = (Ether(src=ep.mac, dst=l['mac']) /
-                 IPv6(dst=l['ip6'], src=ep.ip6.address) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
 
@@ -2135,9 +2107,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=112, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IPv6(src=l['ip6'], dst=ep.ip6.address) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, p * 1, self.pg0)
             rx = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
@@ -2158,9 +2130,9 @@ class TestGBP(VppTestCase):
 
         for l in learnt:
             p = (Ether(src=ep.mac, dst=l['mac']) /
-                 IPv6(dst=l['ip6'], src=ep.ip6.address) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
 
@@ -2260,19 +2232,23 @@ class TestGBP(VppTestCase):
         for epg in epgs:
             # IP config on the BVI interfaces
             if epg != epgs[1]:
-                VppIpInterfaceBind(self, epg.bvi, epg.rd.t4).add_vpp_config()
-                VppIpInterfaceBind(self, epg.bvi, epg.rd.t6).add_vpp_config()
+                b4 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t4).add_vpp_config()
+                b6 = VppIpInterfaceBind(self, epg.bvi,
+                                        epg.rd.t6).add_vpp_config()
                 epg.bvi.set_mac(self.router_mac)
 
-            if_ip4 = VppIpInterfaceAddress(self, epg.bvi, epg.bvi_ip4, 32)
-            if_ip6 = VppIpInterfaceAddress(self, epg.bvi, epg.bvi_ip6, 128)
-            if_ip4.add_vpp_config()
-            if_ip6.add_vpp_config()
+            if_ip4 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip4, 32,
+                                           bind=b4).add_vpp_config()
+            if_ip6 = VppIpInterfaceAddress(self, epg.bvi,
+                                           epg.bvi_ip6, 128,
+                                           bind=b6).add_vpp_config()
 
             # add the BD ARP termination entry for BVI IP
             epg.bd_arp_ip4 = VppBridgeDomainArpEntry(self, epg.bd.bd,
                                                      str(self.router_mac),
-                                                     epg.bvi_ip4.address)
+                                                     epg.bvi_ip4)
             epg.bd_arp_ip4.add_vpp_config()
 
             # EPG in VPP
@@ -2293,10 +2269,10 @@ class TestGBP(VppTestCase):
         #
         pkt_intra_epg_220_to_220 = (Ether(src=self.pg0.remote_mac,
                                           dst=self.pg1.remote_mac) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[1].ip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[1].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged(self.pg0,
                                      pkt_intra_epg_220_to_220 * 65,
@@ -2304,10 +2280,10 @@ class TestGBP(VppTestCase):
 
         pkt_intra_epg_220_to_220 = (Ether(src=self.pg0.remote_mac,
                                           dst=self.pg1.remote_mac) /
-                                    IPv6(src=eps[0].ip6.address,
-                                         dst=eps[1].ip6.address) /
+                                    IPv6(src=eps[0].ip6,
+                                         dst=eps[1].ip6) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_expect_bridged6(self.pg0,
                                       pkt_intra_epg_220_to_220 * 65,
@@ -2318,23 +2294,25 @@ class TestGBP(VppTestCase):
         #
         pkt_inter_epg_220_to_221 = (Ether(src=self.pg0.remote_mac,
                                           dst=self.pg2.remote_mac) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[2].ip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[2].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(self.pg0, pkt_inter_epg_220_to_221)
 
         #
         # A uni-directional contract from EPG 220 -> 221
         #
-        acl = VppGbpAcl(self)
-        rule = acl.create_rule(permit_deny=1, proto=17)
-        rule2 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        rule3 = acl.create_rule(permit_deny=1, proto=1)
-        acl_index = acl.add_vpp_config([rule, rule2, rule3])
+        rule = AclRule(is_permit=1, proto=17)
+        rule2 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        rule3 = AclRule(is_permit=1, proto=1)
+        acl = VppAcl(self, rules=[rule, rule2, rule3])
+        acl.add_vpp_config()
+
         c1 = VppGbpContract(
-            self, 400, epgs[0].sclass, epgs[1].sclass, acl_index,
+            self, 400, epgs[0].sclass, epgs[1].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -2356,10 +2334,10 @@ class TestGBP(VppTestCase):
 
         pkt_inter_epg_220_to_222 = (Ether(src=self.pg0.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IP(src=eps[0].ip4.address,
-                                       dst=eps[3].ip4.address) /
+                                    IP(src=eps[0].ip4,
+                                       dst=eps[3].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         self.send_and_assert_no_replies(eps[0].itf,
                                         pkt_inter_epg_220_to_222 * 65)
 
@@ -2368,16 +2346,16 @@ class TestGBP(VppTestCase):
         #
         pkt_router_ping_220_to_221 = (Ether(src=self.pg0.remote_mac,
                                             dst=str(self.router_mac)) /
-                                      IP(src=eps[0].ip4.address,
-                                         dst=epgs[1].bvi_ip4.address) /
+                                      IP(src=eps[0].ip4,
+                                         dst=epgs[1].bvi_ip4) /
                                       ICMP(type='echo-request'))
 
         self.send_and_expect(self.pg0, [pkt_router_ping_220_to_221], self.pg0)
 
         pkt_router_ping_220_to_221 = (Ether(src=self.pg0.remote_mac,
                                             dst=str(self.router_mac)) /
-                                      IPv6(src=eps[0].ip6.address,
-                                           dst=epgs[1].bvi_ip6.address) /
+                                      IPv6(src=eps[0].ip6,
+                                           dst=epgs[1].bvi_ip6) /
                                       ICMPv6EchoRequest())
 
         self.send_and_expect(self.pg0, [pkt_router_ping_220_to_221], self.pg0)
@@ -2386,7 +2364,7 @@ class TestGBP(VppTestCase):
         # contract for the return direction
         #
         c2 = VppGbpContract(
-            self, 400, epgs[1].sclass, epgs[0].sclass, acl_index,
+            self, 400, epgs[1].sclass, epgs[0].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -2403,29 +2381,29 @@ class TestGBP(VppTestCase):
                                      eps[2].itf)
         pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
                                           dst=self.pg0.remote_mac) /
-                                    IP(src=eps[2].ip4.address,
-                                       dst=eps[0].ip4.address) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         self.send_and_expect_bridged(eps[2].itf,
                                      pkt_inter_epg_221_to_220 * 65,
                                      eps[0].itf)
         pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IP(src=eps[2].ip4.address,
-                                       dst=eps[0].ip4.address) /
+                                    IP(src=eps[2].ip4,
+                                       dst=eps[0].ip4) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         self.send_and_expect_routed(eps[2].itf,
                                     pkt_inter_epg_221_to_220 * 65,
                                     eps[0].itf,
                                     str(self.router_mac))
         pkt_inter_epg_221_to_220 = (Ether(src=self.pg2.remote_mac,
                                           dst=str(self.router_mac)) /
-                                    IPv6(src=eps[2].ip6.address,
-                                         dst=eps[0].ip6.address) /
+                                    IPv6(src=eps[2].ip6,
+                                         dst=eps[0].ip6) /
                                     UDP(sport=1234, dport=1234) /
-                                    Raw('\xa5' * 100))
+                                    Raw(b'\xa5' * 100))
         self.send_and_expect_routed6(eps[2].itf,
                                      pkt_inter_epg_221_to_220 * 65,
                                      eps[0].itf,
@@ -2435,7 +2413,7 @@ class TestGBP(VppTestCase):
         # contract between 220 and 222 uni-direction
         #
         c3 = VppGbpContract(
-            self, 400, epgs[0].sclass, epgs[2].sclass, acl_index,
+            self, 400, epgs[0].sclass, epgs[2].sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -2485,8 +2463,8 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh gbp bridge"))
 
         # ... and has a /32 applied
-        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip_addr.add_vpp_config()
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
 
         #
         # The Endpoint-group
@@ -2495,7 +2473,7 @@ class TestGBP(VppTestCase):
                                       None, self.loop0,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(3))
         epg_220.add_vpp_config()
 
         ep = VppGbpEndpoint(self, self.pg0,
@@ -2511,15 +2489,15 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh bridge 1 detail"))
         self.logger.info(self.vapi.cli("sh gbp bridge"))
         p_uu = (Ether(src=ep.mac, dst="00:11:11:11:11:11") /
-                IP(dst="10.0.0.133", src=ep.ip4.address) /
+                IP(dst="10.0.0.133", src=ep.ip4) /
                 UDP(sport=1234, dport=1234) /
-                Raw('\xa5' * 100))
+                Raw(b'\xa5' * 100))
         self.send_and_assert_no_replies(ep.itf, [p_uu])
 
         p_bm = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
-                IP(dst="10.0.0.133", src=ep.ip4.address) /
+                IP(dst="10.0.0.133", src=ep.ip4) /
                 UDP(sport=1234, dport=1234) /
-                Raw('\xa5' * 100))
+                Raw(b'\xa5' * 100))
         self.send_and_assert_no_replies(ep.itf, [p_bm])
 
         self.pg3.unconfig_ip4()
@@ -2566,8 +2544,8 @@ class TestGBP(VppTestCase):
         gbd1.add_vpp_config()
 
         # ... and has a /32 applied
-        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip_addr.add_vpp_config()
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
 
         #
         # The Endpoint-group
@@ -2592,7 +2570,7 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh gbp bridge"))
         p_arp = (Ether(src=ep.mac, dst="ff:ff:ff:ff:ff:ff") /
                  ARP(op="who-has",
-                     psrc=ep.ip4.address, pdst="10.0.0.99",
+                     psrc=ep.ip4, pdst="10.0.0.99",
                      hwsrc=ep.mac,
                      hwdst="ff:ff:ff:ff:ff:ff"))
         self.send_and_expect(ep.itf, [p_arp], self.pg4)
@@ -2659,8 +2637,8 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh gbp bridge"))
 
         # ... and has a /32 applied
-        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip_addr.add_vpp_config()
+        ip_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                        "10.0.0.128", 32).add_vpp_config()
 
         #
         # The Endpoint-group in which we are learning endpoints
@@ -2669,7 +2647,7 @@ class TestGBP(VppTestCase):
                                       None, self.loop0,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_220.add_vpp_config()
 
         #
@@ -2692,7 +2670,7 @@ class TestGBP(VppTestCase):
                             "2001:10::1", "3001::1")
         ep.add_vpp_config()
 
-        self.assertTrue(find_route(self, ep.ip4.address, 32, table_id=1))
+        self.assertTrue(find_route(self, ep.ip4, 32, table_id=1))
 
         #
         # Send to the static EP
@@ -2707,9 +2685,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=99, gpid=441, flags=0x88) /
                  Ether(src=l['mac'], dst=ep.mac) /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -2742,9 +2720,9 @@ class TestGBP(VppTestCase):
         for l in learnt:
             p = (Ether(src=ep.mac, dst=l['mac']) /
                  Dot1Q(vlan=11) /
-                 IP(dst=l['ip'], src=ep.ip4.address) /
+                 IP(dst=l['ip'], src=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * 17, self.pg3)
 
@@ -2802,8 +2780,8 @@ class TestGBP(VppTestCase):
         #
         # Bind the BVI to the RD
         #
-        VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        b4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
 
         #
         # Pg2 hosts the vxlan tunnel
@@ -2833,10 +2811,12 @@ class TestGBP(VppTestCase):
         self.logger.info(self.vapi.cli("sh gbp route"))
 
         # ... and has a /32 and /128 applied
-        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip4_addr.add_vpp_config()
-        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128", 128)
-        ip6_addr.add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 32,
+                                         bind=b4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "2001:10::128", 128,
+                                         bind=b6).add_vpp_config()
 
         #
         # The Endpoint-group in which we are learning endpoints
@@ -2845,7 +2825,7 @@ class TestGBP(VppTestCase):
                                       None, self.loop0,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_220.add_vpp_config()
 
         #
@@ -2880,9 +2860,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=101, gpid=441, flags=0x88) /
                  Ether(src=l['mac'], dst="00:00:00:11:11:11") /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -2904,9 +2884,9 @@ class TestGBP(VppTestCase):
         #
         for l in learnt:
             p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-                 IP(dst=l['ip'], src=ep.ip4.address) /
+                 IP(dst=l['ip'], src=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * 1, self.pg2)
 
@@ -2926,7 +2906,7 @@ class TestGBP(VppTestCase):
 
                 self.assertEqual(inner[Ether].src, routed_src_mac)
                 self.assertEqual(inner[Ether].dst, routed_dst_mac)
-                self.assertEqual(inner[IP].src, ep.ip4.address)
+                self.assertEqual(inner[IP].src, ep.ip4)
                 self.assertEqual(inner[IP].dst, l['ip'])
 
         for l in learnt:
@@ -2947,9 +2927,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=101, gpid=441, flags=0x88) /
                  Ether(src=l['mac'], dst="00:00:00:11:11:11") /
-                 IPv6(src=l['ip6'], dst=ep.ip6.address) /
+                 IPv6(src=l['ip6'], dst=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -2977,9 +2957,9 @@ class TestGBP(VppTestCase):
         #
         for l in learnt:
             p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-                 IPv6(dst=l['ip6'], src=ep.ip6.address) /
+                 IPv6(dst=l['ip6'], src=ep.ip6) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
 
@@ -2999,7 +2979,7 @@ class TestGBP(VppTestCase):
 
                 self.assertEqual(inner[Ether].src, routed_src_mac)
                 self.assertEqual(inner[Ether].dst, routed_dst_mac)
-                self.assertEqual(inner[IPv6].src, ep.ip6.address)
+                self.assertEqual(inner[IPv6].src, ep.ip6)
                 self.assertEqual(inner[IPv6].dst, l['ip6'])
 
         self.logger.info(self.vapi.cli("sh gbp endpoint"))
@@ -3010,9 +2990,9 @@ class TestGBP(VppTestCase):
         # Static sends to unknown EP with no route
         #
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(dst="10.0.0.99", src=ep.ip4.address) /
+             IP(dst="10.0.0.99", src=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         self.send_and_assert_no_replies(self.pg0, [p])
 
@@ -3028,16 +3008,16 @@ class TestGBP(VppTestCase):
         # static pings router
         #
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(dst=epg_220.bvi_ip4.address, src=ep.ip4.address) /
+             IP(dst=epg_220.bvi_ip4, src=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IPv6(dst=epg_220.bvi_ip6.address, src=ep.ip6.address) /
+             IPv6(dst=epg_220.bvi_ip6, src=ep.ip6) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 
@@ -3045,9 +3025,9 @@ class TestGBP(VppTestCase):
         # packets to address in the subnet are sent on the uu-fwd
         #
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(dst="10.0.0.99", src=ep.ip4.address) /
+             IP(dst="10.0.0.99", src=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, [p], self.pg4)
         for rx in rxs:
@@ -3076,9 +3056,9 @@ class TestGBP(VppTestCase):
                  UDP(sport=1234, dport=48879) /
                  VXLAN(vni=101, gpid=441, flags=0x88) /
                  Ether(src=l['mac'], dst="00:00:00:11:11:11") /
-                 IP(src=l['ip'], dst=ep.ip4.address) /
+                 IP(src=l['ip'], dst=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -3137,9 +3117,9 @@ class TestGBP(VppTestCase):
         ips = ["10.0.0.88", learnt[0]['ip']]
         for ip in ips:
             p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-                 IP(dst=ip, src=ep.ip4.address) /
+                 IP(dst=ip, src=ep.ip4) /
                  UDP(sport=1234, dport=1234) /
-                 Raw('\xa5' * 100))
+                 Raw(b'\xa5' * 100))
 
             rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
 
@@ -3159,7 +3139,7 @@ class TestGBP(VppTestCase):
 
                 self.assertEqual(inner[Ether].src, routed_src_mac)
                 self.assertEqual(inner[Ether].dst, routed_dst_mac)
-                self.assertEqual(inner[IP].src, ep.ip4.address)
+                self.assertEqual(inner[IP].src, ep.ip4)
                 self.assertEqual(inner[IP].dst, ip)
 
         #
@@ -3169,20 +3149,20 @@ class TestGBP(VppTestCase):
         rep_88.remove_vpp_config()
         rep_2.remove_vpp_config()
 
-        self.assertTrue(find_gbp_endpoint(self, ip=rep_2.ip4.address))
+        self.assertTrue(find_gbp_endpoint(self, ip=rep_2.ip4))
 
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(src=ep.ip4.address, dst=rep_2.ip4.address) /
+             IP(src=ep.ip4, dst=rep_2.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(self.pg0, [p], self.pg2)
 
-        self.assertFalse(find_gbp_endpoint(self, ip=rep_88.ip4.address))
+        self.assertFalse(find_gbp_endpoint(self, ip=rep_88.ip4))
 
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(src=ep.ip4.address, dst=rep_88.ip4.address) /
+             IP(src=ep.ip4, dst=rep_88.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(self.pg0, [p], self.pg4)
 
         #
@@ -3190,8 +3170,8 @@ class TestGBP(VppTestCase):
         # present (because it's DP learnt) when the TC ends so wait until
         # it is removed
         #
-        self.wait_for_ep_timeout(ip=rep_88.ip4.address)
-        self.wait_for_ep_timeout(ip=rep_2.ip4.address)
+        self.wait_for_ep_timeout(ip=rep_88.ip4)
+        self.wait_for_ep_timeout(ip=rep_2.ip4)
 
         #
         # Same as above, learn a remote EP via CP and DP
@@ -3214,21 +3194,21 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=101, gpid=441, flags=0x88) /
              Ether(src=l['mac'], dst="00:00:00:11:11:11") /
-             IP(src="10.0.1.4", dst=ep.ip4.address) /
+             IP(src="10.0.1.4", dst=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(self.pg2, p * NUM_PKTS, self.pg0)
 
         self.assertTrue(find_gbp_endpoint(self,
                                           vx_tun_l3._sw_if_index,
-                                          ip=rep_3.ip4.address,
+                                          ip=rep_3.ip4,
                                           tep=[self.pg2.local_ip4,
                                                self.pg2.remote_hosts[2].ip4]))
 
         p = (Ether(src=ep.mac, dst=self.loop0.local_mac) /
-             IP(dst="10.0.1.4", src=ep.ip4.address) /
+             IP(dst="10.0.1.4", src=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg2)
 
         # host 2 is the DP learned TEP
@@ -3236,7 +3216,7 @@ class TestGBP(VppTestCase):
             self.assertEqual(rx[IP].src, self.pg2.local_ip4)
             self.assertEqual(rx[IP].dst, self.pg2.remote_hosts[2].ip4)
 
-        self.wait_for_ep_timeout(ip=rep_3.ip4.address,
+        self.wait_for_ep_timeout(ip=rep_3.ip4,
                                  tep=[self.pg2.local_ip4,
                                       self.pg2.remote_hosts[2].ip4])
 
@@ -3257,9 +3237,9 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=101, gpid=441, flags=0x88) /
              Ether(src=l['mac'], dst="00:00:00:11:11:11") /
-             IP(src=learnt[1]['ip'], dst=ep.ip4.address) /
+             IP(src=learnt[1]['ip'], dst=ep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rx = self.send_and_expect(self.pg2, [p], self.pg0)
 
@@ -3308,8 +3288,8 @@ class TestGBP(VppTestCase):
         #
         # Bind the BVI to the RD
         #
-        VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        b_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
 
         #
         # Pg7 hosts a BD's UU-fwd
@@ -3331,14 +3311,16 @@ class TestGBP(VppTestCase):
         gbd2.add_vpp_config()
 
         # ... and has a /32 and /128 applied
-        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip4_addr.add_vpp_config()
-        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128", 128)
-        ip6_addr.add_vpp_config()
-        ip4_addr = VppIpInterfaceAddress(self, gbd2.bvi, "10.0.1.128", 32)
-        ip4_addr.add_vpp_config()
-        ip6_addr = VppIpInterfaceAddress(self, gbd2.bvi, "2001:11::128", 128)
-        ip6_addr.add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 32,
+                                         bind=b_ip4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "2001:10::128", 128,
+                                         bind=b_ip6).add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd2.bvi,
+                                         "10.0.1.128", 32).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd2.bvi,
+                                         "2001:11::128", 128).add_vpp_config()
 
         #
         # The Endpoint-groups in which we are learning endpoints
@@ -3347,19 +3329,19 @@ class TestGBP(VppTestCase):
                                       None, gbd1.bvi,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_220.add_vpp_config()
         epg_221 = VppGbpEndpointGroup(self, 221, 441, rd1, gbd2,
                                       None, gbd2.bvi,
                                       "10.0.1.128",
                                       "2001:11::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_221.add_vpp_config()
         epg_222 = VppGbpEndpointGroup(self, 222, 442, rd1, gbd1,
                                       None, gbd1.bvi,
                                       "10.0.2.128",
                                       "2001:12::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_222.add_vpp_config()
 
         #
@@ -3390,13 +3372,13 @@ class TestGBP(VppTestCase):
                                       None, gbd1.bvi,
                                       "12.0.0.128",
                                       "4001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_320.add_vpp_config()
         epg_321 = VppGbpEndpointGroup(self, 321, 551, rd1, gbd4,
                                       None, gbd2.bvi,
                                       "12.0.1.128",
                                       "4001:11::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_321.add_vpp_config()
 
         #
@@ -3447,21 +3429,21 @@ class TestGBP(VppTestCase):
         #  different dest ports on each so the are LB hashed differently
         #
         p4 = [(Ether(src=ep1.mac, dst=ep3.mac) /
-               IP(src=ep1.ip4.address, dst=ep3.ip4.address) /
+               IP(src=ep1.ip4, dst=ep3.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep3.mac, dst=ep1.mac) /
-               IP(src=ep3.ip4.address, dst=ep1.ip4.address) /
+               IP(src=ep3.ip4, dst=ep1.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
         p6 = [(Ether(src=ep1.mac, dst=ep3.mac) /
-               IPv6(src=ep1.ip6.address, dst=ep3.ip6.address) /
+               IPv6(src=ep1.ip6, dst=ep3.ip6) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep3.mac, dst=ep1.mac) /
-               IPv6(src=ep3.ip6.address, dst=ep1.ip6.address) /
+               IPv6(src=ep3.ip6, dst=ep1.ip6) /
                UDP(sport=1234, dport=1230) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
 
         # should be dropped since no contract yet
         self.send_and_assert_no_replies(self.pg0, [p4[0]])
@@ -3471,16 +3453,17 @@ class TestGBP(VppTestCase):
         # Add a contract with a rule to load-balance redirect via SEP1 and SEP2
         # one of the next-hops is via an EP that is not known
         #
-        acl = VppGbpAcl(self)
-        rule4 = acl.create_rule(permit_deny=1, proto=17)
-        rule6 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule4, rule6])
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
 
         #
         # test the src-ip hash mode
         #
         c1 = VppGbpContract(
-            self, 402, epg_220.sclass, epg_222.sclass, acl_index,
+            self, 402, epg_220.sclass, epg_222.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -3499,7 +3482,7 @@ class TestGBP(VppTestCase):
         c1.add_vpp_config()
 
         c2 = VppGbpContract(
-            self, 402, epg_222.sclass, epg_220.sclass, acl_index,
+            self, 402, epg_222.sclass, epg_220.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -3526,16 +3509,16 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep3.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep3.ip4)
 
         rxs = self.send_and_expect(self.pg2, p4[1] * 17, sep2.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep2.mac)
-            self.assertEqual(rx[IP].src, ep3.ip4.address)
-            self.assertEqual(rx[IP].dst, ep1.ip4.address)
+            self.assertEqual(rx[IP].src, ep3.ip4)
+            self.assertEqual(rx[IP].dst, ep1.ip4)
 
         rxs = self.send_and_expect(self.pg0, p6[0] * 17, self.pg7)
 
@@ -3555,16 +3538,16 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep4.mac)
-            self.assertEqual(inner[IPv6].src, ep1.ip6.address)
-            self.assertEqual(inner[IPv6].dst, ep3.ip6.address)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep3.ip6)
 
         rxs = self.send_and_expect(self.pg2, p6[1] * 17, sep3.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep3.mac)
-            self.assertEqual(rx[IPv6].src, ep3.ip6.address)
-            self.assertEqual(rx[IPv6].dst, ep1.ip6.address)
+            self.assertEqual(rx[IPv6].src, ep3.ip6)
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
 
         #
         # programme the unknown EP
@@ -3576,8 +3559,8 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep4.mac)
-            self.assertEqual(rx[IPv6].src, ep1.ip6.address)
-            self.assertEqual(rx[IPv6].dst, ep3.ip6.address)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
+            self.assertEqual(rx[IPv6].dst, ep3.ip6)
 
         #
         # and revert back to unprogrammed
@@ -3602,8 +3585,8 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep4.mac)
-            self.assertEqual(inner[IPv6].src, ep1.ip6.address)
-            self.assertEqual(inner[IPv6].dst, ep3.ip6.address)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep3.ip6)
 
         c1.remove_vpp_config()
         c2.remove_vpp_config()
@@ -3612,7 +3595,7 @@ class TestGBP(VppTestCase):
         # test the symmetric hash mode
         #
         c1 = VppGbpContract(
-            self, 402, epg_220.sclass, epg_222.sclass, acl_index,
+            self, 402, epg_220.sclass, epg_222.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
@@ -3631,7 +3614,7 @@ class TestGBP(VppTestCase):
         c1.add_vpp_config()
 
         c2 = VppGbpContract(
-            self, 402, epg_222.sclass, epg_220.sclass, acl_index,
+            self, 402, epg_222.sclass, epg_220.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
@@ -3658,16 +3641,16 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep3.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep3.ip4)
 
         rxs = self.send_and_expect(self.pg2, p4[1] * 17, sep1.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep3.ip4.address)
-            self.assertEqual(rx[IP].dst, ep1.ip4.address)
+            self.assertEqual(rx[IP].src, ep3.ip4)
+            self.assertEqual(rx[IP].dst, ep1.ip4)
 
         #
         # programme the unknown EP for the L3 tests
@@ -3679,24 +3662,24 @@ class TestGBP(VppTestCase):
         #  different dest ports on each so the are LB hashed differently
         #
         p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IP(src=ep1.ip4.address, dst=ep2.ip4.address) /
+               IP(src=ep1.ip4, dst=ep2.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep2.mac, dst=str(self.router_mac)) /
-               IP(src=ep2.ip4.address, dst=ep1.ip4.address) /
+               IP(src=ep2.ip4, dst=ep1.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
         p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IPv6(src=ep1.ip6.address, dst=ep2.ip6.address) /
+               IPv6(src=ep1.ip6, dst=ep2.ip6) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep2.mac, dst=str(self.router_mac)) /
-               IPv6(src=ep2.ip6.address, dst=ep1.ip6.address) /
+               IPv6(src=ep2.ip6, dst=ep1.ip6) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
 
         c3 = VppGbpContract(
-            self, 402, epg_220.sclass, epg_221.sclass, acl_index,
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
@@ -3719,8 +3702,8 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep2.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
 
         #
         # learn a remote EP in EPG 221
@@ -3733,7 +3716,7 @@ class TestGBP(VppTestCase):
         vx_tun_l3.add_vpp_config()
 
         c4 = VppGbpContract(
-            self, 402, epg_221.sclass, epg_220.sclass, acl_index,
+            self, 402, epg_221.sclass, epg_220.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -3758,9 +3741,9 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=444, gpid=441, flags=0x88) /
              Ether(src="00:22:22:22:22:33", dst=str(self.router_mac)) /
-             IP(src="10.0.0.88", dst=ep1.ip4.address) /
+             IP(src="10.0.0.88", dst=ep1.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         # unknown remote EP to local EP redirected
         rxs = self.send_and_expect(self.pg7, [p], sep1.itf)
@@ -3769,7 +3752,7 @@ class TestGBP(VppTestCase):
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
             self.assertEqual(rx[IP].src, "10.0.0.88")
-            self.assertEqual(rx[IP].dst, ep1.ip4.address)
+            self.assertEqual(rx[IP].dst, ep1.ip4)
 
         # endpoint learnt via the parent GBP-vxlan interface
         self.assertTrue(find_gbp_endpoint(self,
@@ -3783,9 +3766,9 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=444, gpid=441, flags=0x88) /
              Ether(src="00:22:22:22:22:33", dst=str(self.router_mac)) /
-             IPv6(src="2001:10::88", dst=ep1.ip6.address) /
+             IPv6(src="2001:10::88", dst=ep1.ip6) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         # unknown remote EP to local EP redirected (ipv6)
         rxs = self.send_and_expect(self.pg7, [p], sep3.itf)
@@ -3794,7 +3777,7 @@ class TestGBP(VppTestCase):
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep3.mac)
             self.assertEqual(rx[IPv6].src, "2001:10::88")
-            self.assertEqual(rx[IPv6].dst, ep1.ip6.address)
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
 
         # endpoint learnt via the parent GBP-vxlan interface
         self.assertTrue(find_gbp_endpoint(self,
@@ -3805,20 +3788,20 @@ class TestGBP(VppTestCase):
         # L3 switch from local to remote EP
         #
         p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IP(src=ep1.ip4.address, dst="10.0.0.88") /
+               IP(src=ep1.ip4, dst="10.0.0.88") /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
         p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IPv6(src=ep1.ip6.address, dst="2001:10::88") /
+               IPv6(src=ep1.ip6, dst="2001:10::88") /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
 
         rxs = self.send_and_expect(self.pg0, p4[0] * 17, sep1.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
             self.assertEqual(rx[IP].dst, "10.0.0.88")
 
         rxs = self.send_and_expect(self.pg0, p6[0] * 17, sep4.itf)
@@ -3826,14 +3809,14 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep4.mac)
-            self.assertEqual(rx[IPv6].src, ep1.ip6.address)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
             self.assertEqual(rx[IPv6].dst, "2001:10::88")
 
         #
         # test the dst-ip hash mode
         #
         c5 = VppGbpContract(
-            self, 402, epg_220.sclass, epg_221.sclass, acl_index,
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
@@ -3856,7 +3839,7 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
             self.assertEqual(rx[IP].dst, "10.0.0.88")
 
         rxs = self.send_and_expect(self.pg0, p6[0] * 17, sep3.itf)
@@ -3864,7 +3847,7 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep3.mac)
-            self.assertEqual(rx[IPv6].src, ep1.ip6.address)
+            self.assertEqual(rx[IPv6].src, ep1.ip6)
             self.assertEqual(rx[IPv6].dst, "2001:10::88")
 
         #
@@ -3896,8 +3879,8 @@ class TestGBP(VppTestCase):
         # add local l3out
         # the external bd
         self.loop4.set_mac(self.router_mac)
-        VppIpInterfaceBind(self, self.loop4, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop4, t6).add_vpp_config()
+        b_lo4_ip4 = VppIpInterfaceBind(self, self.loop4, t4).add_vpp_config()
+        b_lo4_ip6 = VppIpInterfaceBind(self, self.loop4, t6).add_vpp_config()
         ebd = VppBridgeDomain(self, 100)
         ebd.add_vpp_config()
         gebd = VppGbpBridgeDomain(self, ebd, rd1, self.loop4, None, None)
@@ -3907,19 +3890,19 @@ class TestGBP(VppTestCase):
                                    None, gebd.bvi,
                                    "10.1.0.128",
                                    "2001:10:1::128",
-                                   VppGbpEndpointRetention(2))
+                                   VppGbpEndpointRetention(60))
         eepg.add_vpp_config()
         # add subnets to BVI
         VppIpInterfaceAddress(
             self,
             gebd.bvi,
             "10.1.0.128",
-            24).add_vpp_config()
+            24, bind=b_lo4_ip4).add_vpp_config()
         VppIpInterfaceAddress(
             self,
             gebd.bvi,
             "2001:10:1::128",
-            64).add_vpp_config()
+            64, bind=b_lo4_ip6).add_vpp_config()
         # ... which are L3-out subnets
         VppGbpSubnet(self, rd1, "10.1.0.0", 24,
                      VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
@@ -3941,25 +3924,25 @@ class TestGBP(VppTestCase):
 
         # external subnets reachable though eep1 and eep2 respectively
         VppIpRoute(self, "10.220.0.0", 24,
-                   [VppRoutePath(eep1.ip4.address, eep1.epg.bvi.sw_if_index)],
+                   [VppRoutePath(eep1.ip4, eep1.epg.bvi.sw_if_index)],
                    table_id=t4.table_id).add_vpp_config()
         VppGbpSubnet(self, rd1, "10.220.0.0", 24,
                      VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
                      sclass=4220).add_vpp_config()
         VppIpRoute(self, "10:220::", 64,
-                   [VppRoutePath(eep1.ip6.address, eep1.epg.bvi.sw_if_index)],
+                   [VppRoutePath(eep1.ip6, eep1.epg.bvi.sw_if_index)],
                    table_id=t6.table_id).add_vpp_config()
         VppGbpSubnet(self, rd1, "10:220::", 64,
                      VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
                      sclass=4220).add_vpp_config()
         VppIpRoute(self, "10.221.0.0", 24,
-                   [VppRoutePath(eep2.ip4.address, eep2.epg.bvi.sw_if_index)],
+                   [VppRoutePath(eep2.ip4, eep2.epg.bvi.sw_if_index)],
                    table_id=t4.table_id).add_vpp_config()
         VppGbpSubnet(self, rd1, "10.221.0.0", 24,
                      VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
                      sclass=4221).add_vpp_config()
         VppIpRoute(self, "10:221::", 64,
-                   [VppRoutePath(eep2.ip6.address, eep2.epg.bvi.sw_if_index)],
+                   [VppRoutePath(eep2.ip6, eep2.epg.bvi.sw_if_index)],
                    table_id=t6.table_id).add_vpp_config()
         VppGbpSubnet(self, rd1, "10:221::", 64,
                      VppEnum.vl_api_gbp_subnet_type_t.GBP_API_SUBNET_L3_OUT,
@@ -3974,19 +3957,19 @@ class TestGBP(VppTestCase):
               Dot1Q(vlan=100) /
               IP(src="10.220.0.17", dst="10.221.0.65") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (Ether(src=eep1.mac, dst=self.router_mac) /
               Dot1Q(vlan=100) /
               IPv6(src="10:220::17", dst="10:221::65") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         # packets should be dropped in absence of contract
         self.send_and_assert_no_replies(self.pg0, p)
 
         # contract redirecting to sep5
         VppGbpContract(
-            self, 402, 4220, 4221, acl_index,
+            self, 402, 4220, 4221, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
@@ -4050,7 +4033,7 @@ class TestGBP(VppTestCase):
         # change the contract between l3out to redirect to local SEPs
         # instead of remote SEP
         VppGbpContract(
-            self, 402, 4220, 4221, acl_index,
+            self, 402, 4220, 4221, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
@@ -4081,7 +4064,7 @@ class TestGBP(VppTestCase):
 
         # contract to redirect to learnt SEP
         VppGbpContract(
-            self, 402, epg_221.sclass, epg_222.sclass, acl_index,
+            self, 402, epg_221.sclass, epg_222.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_DST_IP,
@@ -4102,13 +4085,13 @@ class TestGBP(VppTestCase):
                 VXLAN(vni=444, gpid=441, flags=0x88) /
                 Ether(src="00:22:22:22:22:44", dst=str(self.router_mac)))
         p = [(base /
-              IP(src="10.0.1.100", dst=ep3.ip4.address) /
+              IP(src="10.0.1.100", dst=ep3.ip4) /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (base /
-              IPv6(src="2001:10::100", dst=ep3.ip6.address) /
+              IPv6(src="2001:10::100", dst=ep3.ip6) /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         # unknown remote EP to local EP redirected to known remote SEP
         rxs = self.send_and_expect(self.pg7, p, self.pg7)
@@ -4226,12 +4209,12 @@ class TestGBP(VppTestCase):
         #
         # Bind the BVI to the RD
         #
-        VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop1, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop1, t6).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop2, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop2, t6).add_vpp_config()
+        b_lo0_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_lo0_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        b_lo1_ip4 = VppIpInterfaceBind(self, self.loop1, t4).add_vpp_config()
+        b_lo1_ip6 = VppIpInterfaceBind(self, self.loop1, t6).add_vpp_config()
+        b_lo2_ip4 = VppIpInterfaceBind(self, self.loop2, t4).add_vpp_config()
+        b_lo2_ip6 = VppIpInterfaceBind(self, self.loop2, t6).add_vpp_config()
 
         #
         # Pg7 hosts a BD's UU-fwd
@@ -4253,14 +4236,18 @@ class TestGBP(VppTestCase):
         gbd2.add_vpp_config()
 
         # ... and has a /32 and /128 applied
-        ip4_addr1 = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 32)
-        ip4_addr1.add_vpp_config()
-        ip6_addr1 = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128", 128)
-        ip6_addr1.add_vpp_config()
-        ip4_addr2 = VppIpInterfaceAddress(self, gbd2.bvi, "10.0.1.128", 32)
-        ip4_addr2.add_vpp_config()
-        ip6_addr2 = VppIpInterfaceAddress(self, gbd2.bvi, "2001:11::128", 128)
-        ip6_addr2.add_vpp_config()
+        ip4_addr1 = VppIpInterfaceAddress(self, gbd1.bvi,
+                                          "10.0.0.128", 32,
+                                          bind=b_lo0_ip4).add_vpp_config()
+        ip6_addr1 = VppIpInterfaceAddress(self, gbd1.bvi,
+                                          "2001:10::128", 128,
+                                          bind=b_lo0_ip6).add_vpp_config()
+        ip4_addr2 = VppIpInterfaceAddress(self, gbd2.bvi,
+                                          "10.0.1.128", 32,
+                                          bind=b_lo1_ip4).add_vpp_config()
+        ip6_addr2 = VppIpInterfaceAddress(self, gbd2.bvi,
+                                          "2001:11::128", 128,
+                                          bind=b_lo1_ip6).add_vpp_config()
 
         #
         # The Endpoint-groups
@@ -4269,13 +4256,13 @@ class TestGBP(VppTestCase):
                                       None, gbd1.bvi,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_220.add_vpp_config()
         epg_221 = VppGbpEndpointGroup(self, 221, 441, rd1, gbd2,
                                       None, gbd2.bvi,
                                       "10.0.1.128",
                                       "2001:11::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_221.add_vpp_config()
 
         #
@@ -4291,10 +4278,12 @@ class TestGBP(VppTestCase):
                                   bd_uu3, learn=False)
         gbd3.add_vpp_config()
 
-        ip4_addr3 = VppIpInterfaceAddress(self, gbd3.bvi, "12.0.0.128", 32)
-        ip4_addr3.add_vpp_config()
-        ip6_addr3 = VppIpInterfaceAddress(self, gbd3.bvi, "4001:10::128", 128)
-        ip6_addr3.add_vpp_config()
+        ip4_addr3 = VppIpInterfaceAddress(self, gbd3.bvi,
+                                          "12.0.0.128", 32,
+                                          bind=b_lo2_ip4).add_vpp_config()
+        ip6_addr3 = VppIpInterfaceAddress(self, gbd3.bvi,
+                                          "4001:10::128", 128,
+                                          bind=b_lo2_ip6).add_vpp_config()
 
         #
         # self.logger.info(self.vapi.cli("show gbp bridge"))
@@ -4310,7 +4299,7 @@ class TestGBP(VppTestCase):
                                       None, gbd3.bvi,
                                       "12.0.0.128",
                                       "4001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(60))
         epg_320.add_vpp_config()
 
         #
@@ -4358,21 +4347,21 @@ class TestGBP(VppTestCase):
         # one node and service endpoint in another node)
         #
         p4 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IP(src=ep1.ip4.address, dst=ep2.ip4.address) /
+               IP(src=ep1.ip4, dst=ep2.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep2.mac, dst=str(self.router_mac)) /
-               IP(src=ep2.ip4.address, dst=ep1.ip4.address) /
+               IP(src=ep2.ip4, dst=ep1.ip4) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
         p6 = [(Ether(src=ep1.mac, dst=str(self.router_mac)) /
-               IPv6(src=ep1.ip6.address, dst=ep2.ip6.address) /
+               IPv6(src=ep1.ip6, dst=ep2.ip6) /
                UDP(sport=1234, dport=1234) /
-               Raw('\xa5' * 100)),
+               Raw(b'\xa5' * 100)),
               (Ether(src=ep2.mac, dst=str(self.router_mac)) /
-               IPv6(src=ep2.ip6.address, dst=ep1.ip6.address) /
+               IPv6(src=ep2.ip6, dst=ep1.ip6) /
                UDP(sport=1234, dport=1230) /
-               Raw('\xa5' * 100))]
+               Raw(b'\xa5' * 100))]
 
         # should be dropped since no contract yet
         self.send_and_assert_no_replies(self.pg0, [p4[0]])
@@ -4382,16 +4371,17 @@ class TestGBP(VppTestCase):
         # Add a contract with a rule to load-balance redirect via SEP1 and SEP2
         # one of the next-hops is via an EP that is not known
         #
-        acl = VppGbpAcl(self)
-        rule4 = acl.create_rule(permit_deny=1, proto=17)
-        rule6 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule4, rule6])
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
 
         #
         # test the src-ip hash mode
         #
         c1 = VppGbpContract(
-            self, 402, epg_220.sclass, epg_221.sclass, acl_index,
+            self, 402, epg_220.sclass, epg_221.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
@@ -4406,7 +4396,7 @@ class TestGBP(VppTestCase):
         c1.add_vpp_config()
 
         c2 = VppGbpContract(
-            self, 402, epg_221.sclass, epg_220.sclass, acl_index,
+            self, 402, epg_221.sclass, epg_220.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_REDIRECT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC,
@@ -4442,8 +4432,8 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep1.mac)
-            self.assertEqual(inner[IP].src, ep1.ip4.address)
-            self.assertEqual(inner[IP].dst, ep2.ip4.address)
+            self.assertEqual(inner[IP].src, ep1.ip4)
+            self.assertEqual(inner[IP].dst, ep2.ip4)
 
         rxs = self.send_and_expect(self.pg1, p4[1] * 17, self.pg7)
 
@@ -4463,8 +4453,8 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep1.mac)
-            self.assertEqual(inner[IP].src, ep2.ip4.address)
-            self.assertEqual(inner[IP].dst, ep1.ip4.address)
+            self.assertEqual(inner[IP].src, ep2.ip4)
+            self.assertEqual(inner[IP].dst, ep1.ip4)
 
         rxs = self.send_and_expect(self.pg0, p6[0] * 17, self.pg7)
 
@@ -4481,8 +4471,8 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep1.mac)
-            self.assertEqual(inner[IPv6].src, ep1.ip6.address)
-            self.assertEqual(inner[IPv6].dst, ep2.ip6.address)
+            self.assertEqual(inner[IPv6].src, ep1.ip6)
+            self.assertEqual(inner[IPv6].dst, ep2.ip6)
 
         rxs = self.send_and_expect(self.pg1, p6[1] * 17, self.pg7)
 
@@ -4502,8 +4492,8 @@ class TestGBP(VppTestCase):
 
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, sep1.mac)
-            self.assertEqual(inner[IPv6].src, ep2.ip6.address)
-            self.assertEqual(inner[IPv6].dst, ep1.ip6.address)
+            self.assertEqual(inner[IPv6].src, ep2.ip6)
+            self.assertEqual(inner[IPv6].dst, ep1.ip6)
 
         # configure sep1: it is now local
         # packets between ep1 and ep2 are redirected locally
@@ -4514,16 +4504,16 @@ class TestGBP(VppTestCase):
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep2.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
 
         rxs = self.send_and_expect(self.pg1, p6[1] * 17, sep1.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, routed_src_mac)
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IPv6].src, ep2.ip6.address)
-            self.assertEqual(rx[IPv6].dst, ep1.ip6.address)
+            self.assertEqual(rx[IPv6].src, ep2.ip6)
+            self.assertEqual(rx[IPv6].dst, ep1.ip6)
 
         # packet coming from the l2 spine-proxy to sep1
         p = (Ether(src=self.pg7.remote_mac,
@@ -4533,21 +4523,21 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=116, gpid=440, gpflags=0x08, flags=0x88) /
              Ether(src=str(self.router_mac), dst=sep1.mac) /
-             IP(src=ep1.ip4.address, dst=ep2.ip4.address) /
+             IP(src=ep1.ip4, dst=ep2.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, [p] * 17, sep1.itf)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, str(self.router_mac))
             self.assertEqual(rx[Ether].dst, sep1.mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep2.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
 
         # contract for SEP to communicate with dst EP
         c3 = VppGbpContract(
-            self, 402, epg_320.sclass, epg_221.sclass, acl_index,
+            self, 402, epg_320.sclass, epg_221.sclass, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SYMMETRIC),
@@ -4565,9 +4555,9 @@ class TestGBP(VppTestCase):
         # the rd UU (packet is routed)
 
         p1 = (Ether(src=sep1.mac, dst=self.router_mac) /
-              IP(src=ep1.ip4.address, dst=ep2.ip4.address) /
+              IP(src=ep1.ip4, dst=ep2.ip4) /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
+              Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg3, [p1] * 17, self.pg7)
 
@@ -4583,8 +4573,8 @@ class TestGBP(VppTestCase):
             inner = rx[VXLAN].payload
             self.assertEqual(inner[Ether].src, routed_src_mac)
             self.assertEqual(inner[Ether].dst, routed_dst_mac)
-            self.assertEqual(inner[IP].src, ep1.ip4.address)
-            self.assertEqual(inner[IP].dst, ep2.ip4.address)
+            self.assertEqual(inner[IP].src, ep1.ip4)
+            self.assertEqual(inner[IP].dst, ep2.ip4)
 
         self.logger.info(self.vapi.cli("show bridge 3 detail"))
         sep1.remove_vpp_config()
@@ -4603,17 +4593,17 @@ class TestGBP(VppTestCase):
               UDP(sport=1234, dport=48879) /
               VXLAN(vni=114, gpid=441, gpflags=0x09, flags=0x88) /
               Ether(src=str(self.router_mac), dst=self.router_mac) /
-              IP(src=ep1.ip4.address, dst=ep2.ip4.address) /
+              IP(src=ep1.ip4, dst=ep2.ip4) /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
+              Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, [p2], self.pg1)
 
         for rx in rxs:
             self.assertEqual(rx[Ether].src, str(self.router_mac))
             self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
-            self.assertEqual(rx[IP].src, ep1.ip4.address)
-            self.assertEqual(rx[IP].dst, ep2.ip4.address)
+            self.assertEqual(rx[IP].src, ep1.ip4)
+            self.assertEqual(rx[IP].dst, ep2.ip4)
 
         #
         # bd_uu2.add_vpp_config()
@@ -4652,8 +4642,8 @@ class TestGBP(VppTestCase):
         #
         # Bind the BVI to the RD
         #
-        VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        b_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        b_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
 
         #
         # Pg7 hosts a BD's BUM
@@ -4685,14 +4675,14 @@ class TestGBP(VppTestCase):
                                       None, gbd1.bvi,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_220.add_vpp_config()
 
         # the BVIs have the subnets applied ...
-        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 24)
-        ip4_addr.add_vpp_config()
-        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128", 64)
-        ip6_addr.add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128",
+                                         24, bind=b_ip4).add_vpp_config()
+        ip6_addr = VppIpInterfaceAddress(self, gbd1.bvi, "2001:10::128",
+                                         64, bind=b_ip6).add_vpp_config()
 
         # ... which are L3-out subnets
         l3o_1 = VppGbpSubnet(
@@ -4771,7 +4761,7 @@ class TestGBP(VppTestCase):
         p_arp = (Ether(src=eep1.mac, dst="ff:ff:ff:ff:ff:ff") /
                  Dot1Q(vlan=100) /
                  ARP(op="who-has",
-                     psrc=eep1.ip4.address, pdst="10.0.0.128",
+                     psrc=eep1.ip4, pdst="10.0.0.128",
                      hwsrc=eep1.mac, hwdst="ff:ff:ff:ff:ff:ff"))
         rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0)
 
@@ -4781,7 +4771,7 @@ class TestGBP(VppTestCase):
         p_arp = (Ether(src=eep3.mac, dst="ff:ff:ff:ff:ff:ff") /
                  Dot1Q(vlan=102) /
                  ARP(op="who-has",
-                     psrc=eep3.ip4.address, pdst="10.0.0.128",
+                     psrc=eep3.ip4, pdst="10.0.0.128",
                      hwsrc=eep3.mac, hwdst="ff:ff:ff:ff:ff:ff"))
         rxs = self.send_and_expect(self.pg0, p_arp * 1, self.pg0)
 
@@ -4793,12 +4783,12 @@ class TestGBP(VppTestCase):
               Dot1Q(vlan=100) /
               IP(src="10.0.0.1", dst="10.0.0.88") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
+              Raw(b'\xa5' * 100))
         p6 = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=100) /
               IPv6(src="2001:10::1", dst="2001:10::88") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100))
+              Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p4 * 1, self.pg7)
 
@@ -4831,7 +4821,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.0.0.101", dst="10.0.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
 
@@ -4840,7 +4830,7 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=100) /
-             IP(src=eep1.ip4.address, dst="10.0.0.128") /
+             IP(src=eep1.ip4, dst="10.0.0.128") /
              ICMP(type='echo-request'))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
@@ -4855,7 +4845,7 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=eep1.mac, dst=eep2.mac) /
              Dot1Q(vlan=100) /
-             IP(src=eep1.ip4.address, dst=eep2.ip4.address) /
+             IP(src=eep1.ip4, dst=eep2.ip4) /
              ICMP(type='echo-request'))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
@@ -4870,7 +4860,7 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=eep3.mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=102) /
-             IP(src=eep3.ip4.address, dst="10.0.0.128") /
+             IP(src=eep3.ip4, dst="10.0.0.128") /
              ICMP(type='echo-request'))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
@@ -4883,7 +4873,7 @@ class TestGBP(VppTestCase):
         # A ip4 subnet reachable through the external EP1
         #
         ip_220 = VppIpRoute(self, "10.220.0.0", 24,
-                            [VppRoutePath(eep1.ip4.address,
+                            [VppRoutePath(eep1.ip4,
                                           eep1.epg.bvi.sw_if_index)],
                             table_id=t4.table_id)
         ip_220.add_vpp_config()
@@ -4898,7 +4888,7 @@ class TestGBP(VppTestCase):
         # An ip6 subnet reachable through the external EP1
         #
         ip6_220 = VppIpRoute(self, "10:220::", 64,
-                             [VppRoutePath(eep1.ip6.address,
+                             [VppRoutePath(eep1.ip6,
                                            eep1.epg.bvi.sw_if_index)],
                              table_id=t6.table_id)
         ip6_220.add_vpp_config()
@@ -4913,7 +4903,7 @@ class TestGBP(VppTestCase):
         # A subnet reachable through the external EP2
         #
         ip_221 = VppIpRoute(self, "10.221.0.0", 24,
-                            [VppRoutePath(eep2.ip4.address,
+                            [VppRoutePath(eep2.ip4,
                                           eep2.epg.bvi.sw_if_index)],
                             table_id=t4.table_id)
         ip_221.add_vpp_config()
@@ -4938,16 +4928,17 @@ class TestGBP(VppTestCase):
         #
         # contract for the external nets to communicate
         #
-        acl = VppGbpAcl(self)
-        rule4 = acl.create_rule(permit_deny=1, proto=17)
-        rule6 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule4, rule6])
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
 
         #
         # A contract with the wrong scope is not matched
         #
         c_44 = VppGbpContract(
-            self, 44, 4220, 4221, acl_index,
+            self, 44, 4220, 4221, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -4961,7 +4952,7 @@ class TestGBP(VppTestCase):
         self.send_and_assert_no_replies(self.pg0, p * 1)
 
         c1 = VppGbpContract(
-            self, 55, 4220, 4221, acl_index,
+            self, 55, 4220, 4221, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -4977,7 +4968,7 @@ class TestGBP(VppTestCase):
         # Contracts allowing ext-net 200 to talk with external EPs
         #
         c2 = VppGbpContract(
-            self, 55, 4220, 113, acl_index,
+            self, 55, 4220, 113, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -4989,7 +4980,7 @@ class TestGBP(VppTestCase):
             [ETH_P_IP, ETH_P_IPV6])
         c2.add_vpp_config()
         c3 = VppGbpContract(
-            self, 55, 113, 4220, acl_index,
+            self, 55, 113, 4220, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5008,7 +4999,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.221.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
 
@@ -5033,7 +5024,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.0.0.101", dst="10.220.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
 
@@ -5042,9 +5033,9 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=eep1.mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=100) /
-             IP(src="10.220.0.1", dst=rep.ip4.address) /
+             IP(src="10.220.0.1", dst=rep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg7)
 
@@ -5064,7 +5055,7 @@ class TestGBP(VppTestCase):
             self.assertTrue(rx[VXLAN].gpflags.D)
             inner = rx[VXLAN].payload
             self.assertEqual(inner[IP].src, "10.220.0.1")
-            self.assertEqual(inner[IP].dst, rep.ip4.address)
+            self.assertEqual(inner[IP].dst, rep.ip4)
 
         #
         # An external subnet reachable via the remote external EP
@@ -5115,7 +5106,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.222.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_assert_no_replies(self.pg0, p * 1)
 
@@ -5123,7 +5114,7 @@ class TestGBP(VppTestCase):
         # Add contracts ext-nets for 220 -> 222
         #
         c4 = VppGbpContract(
-            self, 55, 4220, 4222, acl_index,
+            self, 55, 4220, 4222, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5142,7 +5133,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.222.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 3, self.pg7)
 
@@ -5196,12 +5187,12 @@ class TestGBP(VppTestCase):
               Dot1Q(vlan=100) /
               IP(src="10.220.0.1", dst="10.222.0.1") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (Ether(src=eep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=100) /
               IP(src="10.220.0.1", dst="10.222.0.1") /
               UDP(sport=1222, dport=1235) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         rxs = self.send_and_expect(self.pg0, p, self.pg7)
 
@@ -5240,12 +5231,12 @@ class TestGBP(VppTestCase):
               Dot1Q(vlan=100) /
               IPv6(src="10:220::1", dst="10:222::1") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (Ether(src=eep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=100) /
               IPv6(src="10:220::1", dst="10:222::1") /
               UDP(sport=7777, dport=8881) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         self.logger.info(self.vapi.cli("sh ip6 fib 10:222::1"))
         rxs = self.send_and_expect(self.pg0, p, self.pg7)
@@ -5264,7 +5255,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.222.0.1", dst="10.220.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, p * 3, self.pg0)
         self.assertFalse(find_gbp_endpoint(self, ip="10.222.0.1"))
@@ -5280,7 +5271,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.222.0.1", dst="10.222.0.2") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
 
@@ -5291,7 +5282,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IPv6(src="10:222::1", dst="10:222::2") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
 
@@ -5309,9 +5300,9 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=lep1.mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=144) /
-             IP(src=lep1.ip4.address, dst="10.220.0.1") /
+             IP(src=lep1.ip4, dst="10.220.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
 
@@ -5325,9 +5316,9 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=lep1.mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=144) /
-             IPv6(src=lep1.ip6.address, dst="10:220::1") /
+             IPv6(src=lep1.ip6, dst="10:220::1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
 
@@ -5340,9 +5331,9 @@ class TestGBP(VppTestCase):
         # ip4 and ip6 subnets that load-balance
         #
         ip_20 = VppIpRoute(self, "10.20.0.0", 24,
-                           [VppRoutePath(eep1.ip4.address,
+                           [VppRoutePath(eep1.ip4,
                                          eep1.epg.bvi.sw_if_index),
-                            VppRoutePath(eep2.ip4.address,
+                            VppRoutePath(eep2.ip4,
                                          eep2.epg.bvi.sw_if_index)],
                            table_id=t4.table_id)
         ip_20.add_vpp_config()
@@ -5354,9 +5345,9 @@ class TestGBP(VppTestCase):
         l3o_20.add_vpp_config()
 
         ip6_20 = VppIpRoute(self, "10:20::", 64,
-                            [VppRoutePath(eep1.ip6.address,
+                            [VppRoutePath(eep1.ip6,
                                           eep1.epg.bvi.sw_if_index),
-                             VppRoutePath(eep2.ip6.address,
+                             VppRoutePath(eep2.ip6,
                                           eep2.epg.bvi.sw_if_index)],
                             table_id=t6.table_id)
         ip6_20.add_vpp_config()
@@ -5373,14 +5364,14 @@ class TestGBP(VppTestCase):
         # two ip6 packets whose port are chosen so they load-balance
         p = [(Ether(src=lep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=144) /
-              IPv6(src=lep1.ip6.address, dst="10:20::1") /
+              IPv6(src=lep1.ip6, dst="10:20::1") /
               UDP(sport=1234, dport=1234) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (Ether(src=lep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=144) /
-              IPv6(src=lep1.ip6.address, dst="10:20::1") /
+              IPv6(src=lep1.ip6, dst="10:20::1") /
               UDP(sport=124, dport=1230) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         rxs = self.send_and_expect(self.pg0, p, self.pg0, 2)
 
@@ -5390,14 +5381,14 @@ class TestGBP(VppTestCase):
         # two ip4 packets whose port are chosen so they load-balance
         p = [(Ether(src=lep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=144) /
-              IP(src=lep1.ip4.address, dst="10.20.0.1") /
+              IP(src=lep1.ip4, dst="10.20.0.1") /
               UDP(sport=1235, dport=1235) /
-              Raw('\xa5' * 100)),
+              Raw(b'\xa5' * 100)),
              (Ether(src=lep1.mac, dst=str(self.router_mac)) /
               Dot1Q(vlan=144) /
-              IP(src=lep1.ip4.address, dst="10.20.0.1") /
+              IP(src=lep1.ip4, dst="10.20.0.1") /
               UDP(sport=124, dport=1230) /
-              Raw('\xa5' * 100))]
+              Raw(b'\xa5' * 100))]
 
         rxs = self.send_and_expect(self.pg0, p, self.pg0, 2)
 
@@ -5437,8 +5428,8 @@ class TestGBP(VppTestCase):
         #
         # Bind the BVI to the RD
         #
-        VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
-        VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
+        bind_l0_ip4 = VppIpInterfaceBind(self, self.loop0, t4).add_vpp_config()
+        bind_l0_ip6 = VppIpInterfaceBind(self, self.loop0, t6).add_vpp_config()
 
         #
         # Pg7 hosts a BD's BUM
@@ -5462,12 +5453,13 @@ class TestGBP(VppTestCase):
                                       None, gbd1.bvi,
                                       "10.0.0.128",
                                       "2001:10::128",
-                                      VppGbpEndpointRetention(2))
+                                      VppGbpEndpointRetention(4))
         epg_220.add_vpp_config()
 
         # the BVIs have the subnet applied ...
-        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi, "10.0.0.128", 24)
-        ip4_addr.add_vpp_config()
+        ip4_addr = VppIpInterfaceAddress(self, gbd1.bvi,
+                                         "10.0.0.128", 24,
+                                         bind=bind_l0_ip4).add_vpp_config()
 
         # ... which is an Anonymous L3-out subnets
         l3o_1 = VppGbpSubnet(
@@ -5551,7 +5543,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src=str(rep.ip4), dst="10.0.0.100") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
         rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
 
         #
@@ -5629,13 +5621,14 @@ class TestGBP(VppTestCase):
         #
         # contract for the external nets to communicate
         #
-        acl = VppGbpAcl(self)
-        rule4 = acl.create_rule(permit_deny=1, proto=17)
-        rule6 = acl.create_rule(is_ipv6=1, permit_deny=1, proto=17)
-        acl_index = acl.add_vpp_config([rule4, rule6])
+        rule4 = AclRule(is_permit=1, proto=17)
+        rule6 = AclRule(src_prefix=IPv6Network((0, 0)),
+                        dst_prefix=IPv6Network((0, 0)), is_permit=1, proto=17)
+        acl = VppAcl(self, rules=[rule4, rule6])
+        acl.add_vpp_config()
 
         c1 = VppGbpContract(
-            self, 55, 4220, 4221, acl_index,
+            self, 55, 4220, 4221, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5651,7 +5644,7 @@ class TestGBP(VppTestCase):
         # Contracts allowing ext-net 200 to talk with external EPs
         #
         c2 = VppGbpContract(
-            self, 55, 4220, 113, acl_index,
+            self, 55, 4220, 113, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5663,7 +5656,7 @@ class TestGBP(VppTestCase):
             [ETH_P_IP, ETH_P_IPV6])
         c2.add_vpp_config()
         c3 = VppGbpContract(
-            self, 55, 113, 4220, acl_index,
+            self, 55, 113, 4220, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5682,7 +5675,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.221.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg0)
 
@@ -5705,9 +5698,9 @@ class TestGBP(VppTestCase):
              UDP(sport=1234, dport=48879) /
              VXLAN(vni=444, gpid=113, flags=0x88) /
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
-             IP(src=rep.ip4.address, dst="10.220.0.1") /
+             IP(src=rep.ip4, dst="10.220.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, p * 1, self.pg0)
 
@@ -5716,9 +5709,9 @@ class TestGBP(VppTestCase):
         #
         p = (Ether(src=self.vlan_100.remote_mac, dst=str(self.router_mac)) /
              Dot1Q(vlan=100) /
-             IP(src="10.220.0.1", dst=rep.ip4.address) /
+             IP(src="10.220.0.1", dst=rep.ip4) /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 1, self.pg7)
 
@@ -5738,7 +5731,7 @@ class TestGBP(VppTestCase):
             self.assertTrue(rx[VXLAN].gpflags.D)
             inner = rx[VXLAN].payload
             self.assertEqual(inner[IP].src, "10.220.0.1")
-            self.assertEqual(inner[IP].dst, rep.ip4.address)
+            self.assertEqual(inner[IP].dst, rep.ip4)
 
         #
         # An external subnet reachable via the remote external EP
@@ -5790,7 +5783,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.222.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_assert_no_replies(self.pg0, p * 1)
 
@@ -5798,7 +5791,7 @@ class TestGBP(VppTestCase):
         # Add contracts ext-nets for 220 -> 222
         #
         c4 = VppGbpContract(
-            self, 55, 4220, 4222, acl_index,
+            self, 55, 4220, 4222, acl.acl_index,
             [VppGbpContractRule(
                 VppEnum.vl_api_gbp_rule_action_t.GBP_API_RULE_PERMIT,
                 VppEnum.vl_api_gbp_hash_mode_t.GBP_API_HASH_MODE_SRC_IP,
@@ -5817,7 +5810,7 @@ class TestGBP(VppTestCase):
              Dot1Q(vlan=100) /
              IP(src="10.220.0.1", dst="10.222.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg0, p * 3, self.pg7)
 
@@ -5851,7 +5844,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.222.0.1", dst="10.220.0.1") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_expect(self.pg7, p * 3, self.pg0)
         self.assertFalse(find_gbp_endpoint(self, ip="10.222.0.1"))
@@ -5867,7 +5860,7 @@ class TestGBP(VppTestCase):
              Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
              IP(src="10.222.0.1", dst="10.222.0.2") /
              UDP(sport=1234, dport=1234) /
-             Raw('\xa5' * 100))
+             Raw(b'\xa5' * 100))
 
         rxs = self.send_and_assert_no_replies(self.pg7, p * 3)
 
@@ -5877,6 +5870,8 @@ class TestGBP(VppTestCase):
         self.vlan_101.set_vtr(L2_VTR_OP.L2_DISABLED)
         self.vlan_100.set_vtr(L2_VTR_OP.L2_DISABLED)
         self.pg7.unconfig_ip4()
+        # make sure the programmed EP is no longer learnt from DP
+        self.wait_for_ep_timeout(sw_if_index=rep.itf.sw_if_index, ip=rep.ip4)
 
 
 if __name__ == '__main__':