X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fmap%2Ftest%2Ftest_map.py;h=c64341bfc1903473f56d009cc7d8dccc4ee0e22d;hb=b728a3c8b74127e9a7decd8ecb7dc6cbefb0ab84;hp=f1388b39c65fdb42ccb0a653d59bb7407501af0d;hpb=a43c93f8554ad7418e31be3791b3fb71232f60ac;p=vpp.git diff --git a/src/plugins/map/test/test_map.py b/src/plugins/map/test/test_map.py index f1388b39c65..c64341bfc19 100644 --- a/src/plugins/map/test/test_map.py +++ b/src/plugins/map/test/test_map.py @@ -1,17 +1,19 @@ -#!/usr/bin/env python +#!/usr/bin/env python3 import ipaddress import unittest -from ipaddress import IPv6Network, IPv4Network from framework import VppTestCase, VppTestRunner from vpp_ip import DpoProto from vpp_ip_route import VppIpRoute, VppRoutePath +from util import fragment_rfc791, fragment_rfc8200 import scapy.compat -from scapy.layers.l2 import Ether, Raw -from scapy.layers.inet import IP, UDP, ICMP, TCP, fragment -from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded +from scapy.layers.l2 import Ether +from scapy.packet import Raw +from scapy.layers.inet import IP, UDP, ICMP, TCP +from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, IPv6ExtHdrFragment, \ + ICMPv6EchoRequest, ICMPv6DestUnreach class TestMAP(VppTestCase): @@ -49,22 +51,25 @@ class TestMAP(VppTestCase): i.unconfig_ip6() i.admin_down() - def send_and_assert_encapped(self, tx, ip6_src, ip6_dst, dmac=None): + def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None): if not dmac: dmac = self.pg1.remote_mac - self.pg0.add_stream(tx) + self.pg0.add_stream(packets) self.pg_enable_capture(self.pg_interfaces) self.pg_start() - rx = self.pg1.get_capture(1) - rx = rx[0] + capture = self.pg1.get_capture(len(packets)) + for rx, tx in zip(capture, packets): + self.assertEqual(rx[Ether].dst, dmac) + self.assertEqual(rx[IP].src, tx[IP].src) + self.assertEqual(rx[IPv6].src, ip6_src) + self.assertEqual(rx[IPv6].dst, ip6_dst) - self.assertEqual(rx[Ether].dst, dmac) - self.assertEqual(rx[IP].src, tx[IP].src) - self.assertEqual(rx[IPv6].src, ip6_src) - self.assertEqual(rx[IPv6].dst, ip6_dst) + def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst, + dmac=None): + return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac) def test_api_map_domain_dump(self): map_dst = '2001::/64' @@ -75,7 +80,6 @@ class TestMAP(VppTestCase): ip6_prefix=map_dst, ip6_src=map_src, tag=tag).index - rv = self.vapi.map_domain_dump() # restore the state early so as to not impact subsequent tests. @@ -94,14 +98,14 @@ class TestMAP(VppTestCase): self.assertEqual(rv[0].tag, tag, "output produced incorrect tag value.") - def test_map_e(self): - """ MAP-E """ + def test_map_e_udp(self): + """ MAP-E UDP""" # # Add a route to the MAP-BR # map_br_pfx = "2001::" - map_br_pfx_len = 64 + map_br_pfx_len = 32 map_route = VppIpRoute(self, map_br_pfx, map_br_pfx_len, @@ -112,15 +116,21 @@ class TestMAP(VppTestCase): # # Add a domain that maps from pg0 to pg1 # - map_dst = '2001::/64' + map_dst = '2001::/32' map_src = '3000::1/128' client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:7000:0:c0a8:101:7' tag = 'MAP-E tag.' self.vapi.map_add_domain(ip4_prefix=client_pfx, ip6_prefix=map_dst, ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, tag=tag) + self.vapi.map_param_set_security_check(enable=1, fragments=1) + # Enable MAP on interface. self.vapi.map_if_enable_disable(is_enable=1, sw_if_index=self.pg0.sw_if_index, @@ -130,8 +140,8 @@ class TestMAP(VppTestCase): v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) / UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) - rx = self.send_and_expect(self.pg0, v4*1, self.pg0) + Raw(b'\xa5' * 100)) + rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0) v4_reply = v4[1] v4_reply.ttl -= 1 for p in rx: @@ -143,9 +153,22 @@ class TestMAP(VppTestCase): v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IP(src=self.pg0.remote_ip4, dst='192.168.1.1') / UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + Raw(b'\xa5' * 100)) + + self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr) + + # + # Verify reordered fragments are able to pass as well + # + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(id=1, src=self.pg0.remote_ip4, dst='192.168.1.1') / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 1000)) - self.send_and_assert_encapped(v4, "3000::1", "2001::c0a8:0:0") + frags = fragment_rfc791(v4, 400) + frags.reverse() + + self.send_and_assert_encapped(frags, "3000::1", map_translated_addr) # Enable MAP on interface. self.vapi.map_if_enable_disable(is_enable=1, @@ -156,7 +179,7 @@ class TestMAP(VppTestCase): v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) / UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + Raw(b'\xa5' * 100)) rx = self.send_and_expect(self.pg1, v6*1, self.pg1) v6_reply = v6[1] v6_reply.hlim -= 1 @@ -165,13 +188,13 @@ class TestMAP(VppTestCase): # # Fire in a V6 encapped packet. - # expect a decapped packet on the inside ip4 link + # expect a decapped packet on the inside ip4 link # p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / - IPv6(dst='3000::1', src="2001::1") / + IPv6(dst='3000::1', src=map_translated_addr) / IP(dst=self.pg0.remote_ip4, src='192.168.1.1') / - UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + UDP(sport=10000, dport=20000) / + Raw(b'\xa5' * 100)) self.pg1.add_stream(p) @@ -185,6 +208,54 @@ class TestMAP(VppTestCase): self.assertEqual(rx[IP].src, p[IP].src) self.assertEqual(rx[IP].dst, p[IP].dst) + # + # Verify encapped reordered fragments pass as well + # + p = (IP(id=1, dst=self.pg0.remote_ip4, src='192.168.1.1') / + UDP(sport=10000, dport=20000) / + Raw(b'\xa5' * 1500)) + frags = fragment_rfc791(p, 400) + frags.reverse() + + stream = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / + IPv6(dst='3000::1', src=map_translated_addr) / + x for x in frags) + + self.pg1.add_stream(stream) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(len(frags)) + + for r in rx: + self.assertFalse(r.haslayer(IPv6)) + self.assertEqual(r[IP].src, p[IP].src) + self.assertEqual(r[IP].dst, p[IP].dst) + + # Verify that fragments pass even if ipv6 layer is fragmented + stream = (IPv6(dst='3000::1', src=map_translated_addr) / x + for x in frags) + + v6_stream = [ + Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x + for i in range(len(frags)) + for x in fragment_rfc8200( + IPv6(dst='3000::1', src=map_translated_addr) / frags[i], + i, 200)] + + self.pg1.add_stream(v6_stream) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(len(frags)) + + for r in rx: + self.assertFalse(r.haslayer(IPv6)) + self.assertEqual(r[IP].src, p[IP].src) + self.assertEqual(r[IP].dst, p[IP].dst) + # # Pre-resolve. No API for this!! # @@ -202,9 +273,9 @@ class TestMAP(VppTestCase): self.pg1.sw_if_index)]) pre_res_route.add_vpp_config() - self.send_and_assert_encapped(v4, "3000::1", - "2001::c0a8:0:0", - dmac=self.pg1.remote_hosts[2].mac) + self.send_and_assert_encapped_one(v4, "3000::1", + map_translated_addr, + dmac=self.pg1.remote_hosts[2].mac) # # change the route to the pre-solved next-hop @@ -213,9 +284,9 @@ class TestMAP(VppTestCase): self.pg1.sw_if_index)]) pre_res_route.add_vpp_config() - self.send_and_assert_encapped(v4, "3000::1", - "2001::c0a8:0:0", - dmac=self.pg1.remote_hosts[3].mac) + self.send_and_assert_encapped_one(v4, "3000::1", + map_translated_addr, + dmac=self.pg1.remote_hosts[3].mac) # # cleanup. The test infra's object registry will ensure @@ -224,9 +295,167 @@ class TestMAP(VppTestCase): pre_res_route.remove_vpp_config() self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1") + def test_map_e_inner_frag(self): + """ MAP-E Inner fragmentation """ + + # + # Add a route to the MAP-BR + # + map_br_pfx = "2001::" + map_br_pfx_len = 32 + map_route = VppIpRoute(self, + map_br_pfx, + map_br_pfx_len, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index)]) + map_route.add_vpp_config() + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001::/32' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:7000:0:c0a8:101:7' + tag = 'MAP-E tag.' + self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, + mtu=1000, + tag=tag) + + # Enable MAP on interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=0) + + # Enable inner fragmentation + self.vapi.map_param_set_fragmentation(inner=1) + + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst='192.168.1.1') / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 1300)) + + self.pg_send(self.pg0, v4*1) + rx = self.pg1.get_capture(2) + + frags = fragment_rfc791(v4[1], 1000) + frags[0].id = 0 + frags[1].id = 0 + frags[0].ttl -= 1 + frags[1].ttl -= 1 + frags[0].chksum = 0 + frags[1].chksum = 0 + + v6_reply1 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) / + frags[0]) + v6_reply2 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) / + frags[1]) + rx[0][1].fl = 0 + rx[1][1].fl = 0 + rx[0][1][IP].id = 0 + rx[1][1][IP].id = 0 + rx[0][1][IP].chksum = 0 + rx[1][1][IP].chksum = 0 + + self.validate(rx[0][1], v6_reply1) + self.validate(rx[1][1], v6_reply2) + + def test_map_e_tcp_mss(self): + """ MAP-E TCP MSS""" + + # + # Add a route to the MAP-BR + # + map_br_pfx = "2001::" + map_br_pfx_len = 32 + map_route = VppIpRoute(self, + map_br_pfx, + map_br_pfx_len, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index)]) + map_route.add_vpp_config() + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001::/32' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:5000:0:c0a8:101:5' + tag = 'MAP-E TCP tag.' + self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, + tag=tag) + + # Enable MAP on pg0 interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=0) + + # Enable MAP on pg1 interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=0) + + # TCP MSS clamping + mss_clamp = 1300 + self.vapi.map_param_set_tcp(mss_clamp) + + # + # Send a v4 packet that will be encapped. + # + p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.1.1') + p_tcp = TCP(sport=20000, dport=30000, flags="S", + options=[("MSS", 1455)]) + p4 = p_ether / p_ip4 / p_tcp + + self.pg1.add_stream(p4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(1) + rx = rx[0] + + self.assertTrue(rx.haslayer(IPv6)) + self.assertEqual(rx[IP].src, p4[IP].src) + self.assertEqual(rx[IP].dst, p4[IP].dst) + self.assertEqual(rx[IPv6].src, "3000::1") + self.assertEqual(rx[TCP].options, + TCP(options=[('MSS', mss_clamp)]).options) + def validate(self, rx, expected): self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected))) + def validate_frag(self, p6_frag, p_ip6_expected): + self.assertFalse(p6_frag.haslayer(IP)) + self.assertTrue(p6_frag.haslayer(IPv6)) + self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment)) + self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src) + self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst) + + def validate_frag_payload_len(self, rx, proto, payload_len_expected): + payload_total = 0 + for p in rx: + payload_total += p[IPv6].plen + + # First fragment has proto + payload_total -= len(proto()) + + # Every fragment has IPv6 fragment header + payload_total -= len(IPv6ExtHdrFragment()) * len(rx) + + self.assertEqual(payload_total, payload_len_expected) + def payload(self, len): return 'x' * len @@ -262,7 +491,7 @@ class TestMAP(VppTestCase): v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) / UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + Raw(b'\xa5' * 100)) rx = self.send_and_expect(self.pg0, v4*1, self.pg0) v4_reply = v4[1] v4_reply.ttl -= 1 @@ -272,7 +501,7 @@ class TestMAP(VppTestCase): v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) / UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + Raw(b'\xa5' * 100)) rx = self.send_and_expect(self.pg1, v6*1, self.pg1) v6_reply = v6[1] v6_reply.hlim -= 1 @@ -315,7 +544,7 @@ class TestMAP(VppTestCase): for p in rx: self.validate(p[1], p4_translated) - # IPv4 TTL + # IPv4 TTL=0 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0) p4 = (p_ether / ip4_ttl_expired / payload) @@ -329,20 +558,19 @@ class TestMAP(VppTestCase): for p in rx: self.validate(p[1], icmp4_reply) - ''' - This one is broken, cause it would require hairpinning... - # IPv4 TTL TTL1 + # IPv4 TTL=1 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=1) p4 = (p_ether / ip4_ttl_expired / payload) - icmp4_reply = IP(id=0, ttl=254, src=self.pg0.local_ip4, - dst=self.pg0.remote_ip4) / \ - ICMP(type='time-exceeded', code='ttl-zero-during-transit' ) / \ - IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0) / payload + icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4, + dst=self.pg0.remote_ip4) / + ICMP(type='time-exceeded', + code='ttl-zero-during-transit') / + IP(src=self.pg0.remote_ip4, + dst='192.168.0.1', ttl=1) / payload) rx = self.send_and_expect(self.pg0, p4*1, self.pg0) for p in rx: self.validate(p[1], icmp4_reply) - ''' # IPv6 Hop limit ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab', @@ -370,33 +598,64 @@ class TestMAP(VppTestCase): p6 = (p_ether6 / p_ip6 / payload) self.send_and_assert_no_replies(self.pg1, p6*1) - # Packet fragmentation - payload = UDP(sport=40000, dport=4000) / self.payload(1453) + # UDP packet fragmentation + payload_len = 1453 + payload = UDP(sport=40000, dport=4000) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + self.pg_enable_capture() + self.pg0.add_stream(p4) + self.pg_start() + rx = self.pg1.get_capture(2) + + p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0', + dst='2001:db8:1e0::c0a8:1:e') + for p in rx: + self.validate_frag(p, p_ip6_translated) + + self.validate_frag_payload_len(rx, UDP, payload_len) + + # UDP packet fragmentation send fragments + payload = UDP(sport=40000, dport=4000) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + frags = fragment_rfc791(p4, fragsize=1000) + self.pg_enable_capture() + self.pg0.add_stream(frags) + self.pg_start() + rx = self.pg1.get_capture(2) + + for p in rx: + self.validate_frag(p, p_ip6_translated) + + self.validate_frag_payload_len(rx, UDP, payload_len) + + # ICMP packet fragmentation + payload = ICMP(id=6529) / self.payload(payload_len) p4 = (p_ether / p_ip4 / payload) self.pg_enable_capture() self.pg0.add_stream(p4) self.pg_start() rx = self.pg1.get_capture(2) + + p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0', + dst='2001:db8:160::c0a8:1:6') for p in rx: - pass - # TODO: Manual validation - # self.validate(p[1], icmp4_reply) + self.validate_frag(p, p_ip6_translated) - # Packet fragmentation send fragments - payload = UDP(sport=40000, dport=4000) / self.payload(1453) + self.validate_frag_payload_len(rx, ICMPv6EchoRequest, payload_len) + + # ICMP packet fragmentation send fragments + payload = ICMP(id=6529) / self.payload(payload_len) p4 = (p_ether / p_ip4 / payload) - frags = fragment(p4, fragsize=1000) + frags = fragment_rfc791(p4, fragsize=1000) self.pg_enable_capture() self.pg0.add_stream(frags) self.pg_start() rx = self.pg1.get_capture(2) + for p in rx: - pass - # p.show2() - # reass_pkt = reassemble(rx) - # p4_reply.ttl -= 1 - # p4_reply.id = 256 - # self.validate(reass_pkt, p4_reply) + self.validate_frag(p, p_ip6_translated) + + self.validate_frag_payload_len(rx, ICMPv6EchoRequest, payload_len) # TCP MSS clamping self.vapi.map_param_set_tcp(1300) @@ -432,6 +691,91 @@ class TestMAP(VppTestCase): for p in rx: self.validate(p[1], p4_translated) + # TCP MSS clamping cleanup + self.vapi.map_param_set_tcp(0) + + # Enable icmp6 param to get back ICMPv6 unreachable messages in case + # of security check fails + self.vapi.map_param_set_icmp6(enable_unreachable=1) + + # Send back an IPv6 packet that will be droppped due to security + # check fail + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6_sec_check_fail = IPv6(src='2001:db8:1fe::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + payload = TCP(sport=0xabcd, dport=0xabcd) + p6 = (p_ether6 / p_ip6_sec_check_fail / payload) + + self.pg_send(self.pg1, p6*1) + self.pg0.get_capture(0, timeout=1) + rx = self.pg1.get_capture(1) + + icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6, + dst='2001:db8:1fe::c0a8:1:f') / + ICMPv6DestUnreach(code=5) / + p_ip6_sec_check_fail / payload) + + for p in rx: + self.validate(p[1], icmp6_reply) + + # ICMPv6 unreachable messages cleanup + self.vapi.map_param_set_icmp6(enable_unreachable=0) + + def test_map_t_ip6_psid(self): + """ MAP-T v6->v4 PSID validation""" + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001:db8::/32' + map_src = '1234:5678:90ab:cdef::/64' + ip4_pfx = '192.168.0.0/24' + tag = 'MAP-T Test Domain' + + self.vapi.map_add_domain(ip6_prefix=map_dst, + ip4_prefix=ip4_pfx, + ip6_src=map_src, + ea_bits_len=16, + psid_offset=6, + psid_length=4, + mtu=1500, + tag=tag) + + # Enable MAP-T on interfaces. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=1) + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=1) + + map_route = VppIpRoute(self, + "2001:db8::", + 32, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index, + proto=DpoProto.DPO_PROTO_IP6)]) + map_route.add_vpp_config() + + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + + # Send good IPv6 source port, ensure translated IPv4 received + payload = TCP(sport=0xabcd, dport=80) + p6 = (p_ether6 / p_ip6 / payload) + p4_translated = (IP(src='192.168.0.1', + dst=self.pg0.remote_ip4) / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + rx = self.send_and_expect(self.pg1, p6*1, self.pg0) + for p in rx: + self.validate(p[1], p4_translated) + + # Send bad IPv6 source port, ensure translated IPv4 not received + payload = TCP(sport=0xdcba, dport=80) + p6 = (p_ether6 / p_ip6 / payload) + self.send_and_assert_no_replies(self.pg1, p6*1) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)