index : vpp	master stable/1606 stable/1609 stable/1701 stable/1704 stable/1707 stable/1710 stable/1801 stable/1804 stable/1807 stable/1810 stable/1901 stable/1904 stable/1908 stable/2001 stable/2005 stable/2009 stable/2101 stable/2106 stable/2110 stable/2202 stable/2206 stable/2210 stable/2302 stable/2306 stable/2310 stable/2402 stable/2406 stable/2410 stable/test
	Vector Packet Processing	Grokmirror user

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path: root/src/CMakeLists.txt

Age	Commit message (Expand)	Author	Files	Lines
2019-03-28	AppImage packaging	Dave Barach	1	-1/+1
2019-03-18	Fix build with newer linux headers	Damjan Marion	1	-1/+1
2019-01-29	cmake: fix out-of-git-tree build	Damjan Marion	1	-10/+1
2019-01-26	cmake: add support for linking with DPDK shared libs	Damjan Marion	1	-1/+1
2019-01-20	Rework of debian packaging	Damjan Marion	1	-1/+1
2019-01-18	cmake: print all flags	Damjan Marion	1	-8/+19
2019-01-18	Look for plugins in target triplet subdir	Damjan Marion	1	-0/+1
2019-01-17	cmake: initial cross-compilation support	Damjan Marion	1	-0/+11
2018-09-20	rename vpp-dpdk-dev to vpp-ext-deps	Damjan Marion	1	-0/+1
2018-09-14	cpack: add deb/rpm packaging to VPP module	Damjan Marion	1	-0/+9
2018-09-12	cmake: create cmake VPP module, update sample-plugin so it uses it	Damjan Marion	1	-1/+2
2018-09-12	Always use 'lib' instead of 'lib64'	Damjan Marion	1	-1/+1
2018-09-03	Compile vppinfra on macOS	Damjan Marion	1	-6/+12
2018-09-02	Switch to cmake	Damjan Marion	1	-0/+1
2018-08-31	cmake: detect vpp version, set soversion, pretty config print	Damjan Marion	1	-5/+41
2018-08-30	cmake: a bit of packaging work	Damjan Marion	1	-1/+1
2018-08-28	cmake: Add perftool to cmake build	Mohsin Kazmi	1	-1/+1
2018-08-28	cmake: add g2 and elftool tools	Damjan Marion	1	-1/+1
2018-08-28	cmake: install vppapigen	Damjan Marion	1	-3/+7
2018-08-27	cmake: fix clang build and few minor fixes	Damjan Marion	1	-0/+5
2018-08-27	CMake: fix install lib and iOMA missing symbol	Neale Ranns	1	-1/+1
2018-08-27	cmake: add vapi build	Damjan Marion	1	-1/+1
2018-08-26	cmake: add add_vpp_library and add_vpp_executable macros	Damjan Marion	1	-10/+2
2018-08-26	cmake: move functions to src/cmake	Damjan Marion	1	-151/+7
2018-08-25	cmake: add more headers to the install list	Damjan Marion	1	-1/+1
2018-08-23	CMake: Add Cmake support for Vat	Mohsin Kazmi	1	-3/+1
2018-08-22	CMake: install .json files in ROOT/share/... for papi.	Neale Ranns	1	-4/+11
2018-08-20	CMake: generate .json from .api files	Neale Ranns	1	-3/+20
2018-08-20	Detect support for memfd_create at compilation	Pierre Pfister	1	-1/+14
2018-08-20	CMakeLists file for vpp-api	Neale Ranns	1	-1/+1
2018-08-18	cmake: highlight warning and error messages	Damjan Marion	1	-0/+23
2018-08-17	CMake as an alternative to autotools (experimental)	Damjan Marion	1	-0/+161

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#!/usr/bin/env python3

import ipaddress
import unittest

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
from scapy.packet import Raw
from scapy.layers.inet import IP, UDP, ICMP, TCP, IPerror, UDPerror
from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, ICMPv6PacketTooBig
from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply, IPerror6


class TestMAPBR(VppTestCase):
    """ MAP-T Test Cases """

    @classmethod
    def setUpClass(cls):
        super(TestMAPBR, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestMAPBR, cls).tearDownClass()

    def setUp(self):
        super(TestMAPBR, self).setUp()

        #
        # Create 2 pg interfaces.
        # pg0 is IPv4
        # pg1 is IPv6
        #
        self.create_pg_interfaces(range(2))

        self.pg0.admin_up()
        self.pg0.config_ip4()
        self.pg1.generate_remote_hosts(20)
        self.pg1.configure_ipv4_neighbors()
        self.pg0.resolve_arp()

        self.pg1.admin_up()
        self.pg1.config_ip6()
        self.pg1.generate_remote_hosts(20)
        self.pg1.configure_ipv6_neighbors()

        #
        # BR configuration parameters used for all test.
        #
        self.ip4_prefix = '198.18.0.0/24'
        self.ip6_prefix = '2001:db8:f0::/48'
        self.ip6_src = '2001:db8:ffff:ff00::/64'
        self.ea_bits_len = 12
        self.psid_offset = 6
        self.psid_length = 4
        self.mtu = 1500
        self.tag = 'MAP-T BR'

        self.ipv4_internet_address = self.pg0.remote_ip4
        self.ipv4_map_address = "198.18.0.12"
        self.ipv4_udp_or_tcp_internet_port = 65000
        self.ipv4_udp_or_tcp_map_port = 16606

        self.ipv6_cpe_address = "2001:db8:f0:c30:0:c612:c:3"      # 198.18.0.12
        self.ipv6_spoof_address = "2001:db8:f0:c30:0:c612:1c:3"   # 198.18.0.28
        self.ipv6_spoof_prefix = "2001:db8:f0:c30:0:a00:c:3"      # 10.0.0.12
        self.ipv6_spoof_psid = "2001:db8:f0:c30:0:c612:c:4"       # 4
        self.ipv6_spoof_subnet = "2001:db8:f1:c30:0:c612:c:3"     # f1

        self.ipv6_udp_or_tcp_internet_port = 65000
        self.ipv6_udp_or_tcp_map_port = 16606
        self.ipv6_udp_or_tcp_spoof_port = 16862

        self.ipv6_map_address = (
            "2001:db8:ffff:ff00:ac:1001:200:0")         # 176.16.1.2
        self.ipv6_map_same_rule_diff_addr = (
            "2001:db8:ffff:ff00:c6:1200:1000:0")        # 198.18.0.16
        self.ipv6_map_same_rule_same_addr = (
            "2001:db8:ffff:ff00:c6:1200:c00:0")         # 198.18.0.12

        self.map_br_prefix = "2001:db8:f0::"
        self.map_br_prefix_len = 48
        self.psid_number = 3

        #
        # Add an IPv6 route to the MAP-BR.
        #
        map_route = VppIpRoute(self,
                               self.map_br_prefix,
                               self.map_br_prefix_len,
                               [VppRoutePath(self.pg1.remote_ip6,
                                             self.pg1.sw_if_index)])
        map_route.add_vpp_config()

        #
        # Add a MAP BR domain that maps from pg0 to pg1.
        #
        self.vapi.map_add_domain(ip4_prefix=self.ip4_prefix,
                                 ip6_prefix=self.ip6_prefix,
                                 ip6_src=self.ip6_src,
                                 ea_bits_len=self.ea_bits_len,
                                 psid_offset=self.psid_offset,
                                 psid_length=self.psid_length,
                                 mtu=self.mtu,
                                 tag=self.tag)

        #
        # Set BR parameters.
        #
        self.vapi.map_param_set_fragmentation(inner=1, ignore_df=0)
        self.vapi.map_param_set_fragmentation(inner=0, ignore_df=0)
        self.vapi.map_param_set_icmp(ip4_err_relay_src=self.pg0.local_ip4)
        self.vapi.map_param_set_traffic_class(copy=1)

        #
        # 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)

        self.vapi.map_if_enable_disable(is_enable=1,
                                        sw_if_index=self.pg1.sw_if_index,
                                        is_translation=1)

    def tearDown(self):
        super(TestMAPBR, self).tearDown()
        for i in self.pg_interfaces:
            i.unconfig_ip4()
            i.unconfig_ip6()
            i.admin_down()

    def v4_address_check(self, pkt):
        self.assertEqual(pkt[IP].src, self.ipv4_map_address)
        self.assertEqual(pkt[IP].dst, self.ipv4_internet_address)

    def v4_port_check(self, pkt, proto):
        self.assertEqual(pkt[proto].sport, self.ipv4_udp_or_tcp_map_port)
        self.assertEqual(pkt[proto].dport, self.ipv4_udp_or_tcp_internet_port)

    def v6_address_check(self, pkt):
        self.assertEqual(pkt[IPv6].src, self.ipv6_map_address)
        self.assertEqual(pkt[IPv6].dst, self.ipv6_cpe_address)

    def v6_port_check(self, pkt, proto):
        self.assertEqual(pkt[proto].sport, self.ipv6_udp_or_tcp_internet_port)
        self.assertEqual(pkt[proto].dport, self.ipv6_udp_or_tcp_map_port)

    #
    # Normal translation of UDP packets v4 -> v6 direction
    # Send 128 frame size packet for IPv4/UDP.
    # Received packet should be translated into IPv6 packet with no
    # fragment header.
    #

    def test_map_t_udp_ip4_to_ip6(self):
        """ MAP-T UDP IPv4 -> IPv6 """

        eth = Ether(src=self.pg0.remote_mac,
                    dst=self.pg0.local_mac)
        ip = IP(src=self.pg0.remote_ip4,
                dst=self.ipv4_map_address,
                tos=0)
        udp = UDP(sport=self.ipv4_udp_or_tcp_internet_port,
                  dport=self.ipv4_udp_or_tcp_map_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg0, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v6_address_check(rx_pkt)
        self.v6_port_check(rx_pkt, UDP)
        self.assertEqual(rx_pkt[IPv6].tc, 0)    # IPv4 ToS passed to v6 TC
        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="UDP").nh)

    #
    # Normal translation of TCP packets v4 -> v6 direction.
    # Send 128 frame size packet for IPv4/TCP.
    # Received packet should be translated into IPv6 packet with no
    # fragment header.
    #

    def test_map_t_tcp_ip4_to_ip6(self):
        """ MAP-T TCP IPv4 -> IPv6 """

        eth = Ether(src=self.pg0.remote_mac,
                    dst=self.pg0.local_mac)
        ip = IP(src=self.pg0.remote_ip4,
                dst=self.ipv4_map_address,
                tos=0)
        tcp = TCP(sport=self.ipv4_udp_or_tcp_internet_port,
                  dport=self.ipv4_udp_or_tcp_map_port)
        payload = "a" * 82
        tx_pkt = eth / ip / tcp / payload

        self.pg_send(self.pg0, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v6_address_check(rx_pkt)
        self.v6_port_check(rx_pkt, TCP)
        self.assertEqual(rx_pkt[IPv6].tc, 0)    # IPv4 ToS passed to v6 TC
        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="TCP").nh)

    #
    # Normal translation of UDP packets v6 -> v4 direction
    # Send 128 frame size packet for IPv6/UDP.
    # Received packet should be translated into an IPv4 packet with DF=1.
    #

    def test_map_t_udp_ip6_to_ip4(self):
        """ MAP-T UDP IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v4_address_check(rx_pkt)
        self.v4_port_check(rx_pkt, UDP)
        self.assertEqual(rx_pkt[IP].proto, IP(proto="udp").proto)
        self.assertEqual(rx_pkt[IP].tos, 0)    # IPv6 TC passed to v4 ToS
        df_bit = IP(flags="DF").flags
        self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)

    #
    # Normal translation of TCP packets v6 -> v4 direction
    # Send 128 frame size packet for IPv6/TCP.
    # Received packet should be translated into an IPv4 packet with DF=1
    #

    def test_map_t_tcp_ip6_to_ip4(self):
        """ MAP-T TCP IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        tcp = TCP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / tcp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v4_address_check(rx_pkt)
        self.v4_port_check(rx_pkt, TCP)
        self.assertEqual(rx_pkt[IP].proto, IP(proto="tcp").proto)
        self.assertEqual(rx_pkt[IP].tos, 0)    # IPv6 TC passed to v4 ToS
        df_bit = IP(flags="DF").flags
        self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)

    #
    # Translation of ICMP Echo Request v4 -> v6 direction
    # Received packet should be translated into an IPv6 Echo Request.
    #

    def test_map_t_echo_request_ip4_to_ip6(self):
        """ MAP-T echo request IPv4 -> IPv6 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IP(src=self.pg0.remote_ip4,
                dst=self.ipv4_map_address)
        icmp = ICMP(type="echo-request",
                    id=self.ipv6_udp_or_tcp_map_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / payload

        self.pg_send(self.pg0, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
        self.assertEqual(rx_pkt[ICMPv6EchoRequest].type,
                         ICMPv6EchoRequest(type="Echo Request").type)
        self.assertEqual(rx_pkt[ICMPv6EchoRequest].code, 0)
        self.assertEqual(rx_pkt[ICMPv6EchoRequest].id,
                         self.ipv6_udp_or_tcp_map_port)

    #
    # Translation of ICMP Echo Reply v4 -> v6 direction
    # Received packet should be translated into an IPv6 Echo Reply.
    #

    def test_map_t_echo_reply_ip4_to_ip6(self):
        """ MAP-T echo reply IPv4 -> IPv6 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IP(src=self.pg0.remote_ip4,
                dst=self.ipv4_map_address)
        icmp = ICMP(type="echo-reply",
                    id=self.ipv6_udp_or_tcp_map_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / payload

        self.pg_send(self.pg0, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
        self.assertEqual(rx_pkt[ICMPv6EchoReply].type,
                         ICMPv6EchoReply(type="Echo Reply").type)
        self.assertEqual(rx_pkt[ICMPv6EchoReply].code, 0)
        self.assertEqual(rx_pkt[ICMPv6EchoReply].id,
                         self.ipv6_udp_or_tcp_map_port)

    #
    # Translation of ICMP Time Exceeded v4 -> v6 direction
    # Received packet should be translated into an IPv6 Time Exceeded.
    #

    def test_map_t_time_exceeded_ip4_to_ip6(self):
        """ MAP-T time exceeded IPv4 -> IPv6 """

        eth = Ether(src=self.pg0.remote_mac,
                    dst=self.pg0.local_mac)
        ip = IP(src=self.pg0.remote_ip4,
                dst=self.ipv4_map_address)
        icmp = ICMP(type="time-exceeded", code="ttl-zero-during-transit")
        ip_inner = IP(dst=self.pg0.remote_ip4,
                      src=self.ipv4_map_address, ttl=1)
        udp_inner = UDP(sport=self.ipv4_udp_or_tcp_map_port,
                        dport=self.ipv4_udp_or_tcp_internet_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload

        self.pg_send(self.pg0, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v6_address_check(rx_pkt)
        self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].type,
                         ICMPv6TimeExceeded().type)
        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].code,
                         ICMPv6TimeExceeded(
                            code="hop limit exceeded in transit").code)
        self.assertEqual(rx_pkt[ICMPv6TimeExceeded].hlim, tx_pkt[IP][1].ttl)
        self.assertTrue(rx_pkt.haslayer(IPerror6))
        self.assertTrue(rx_pkt.haslayer(UDPerror))
        self.assertEqual(rx_pkt[IPv6].src, rx_pkt[IPerror6].dst)
        self.assertEqual(rx_pkt[IPv6].dst, rx_pkt[IPerror6].src)
        self.assertEqual(rx_pkt[UDPerror].sport, self.ipv6_udp_or_tcp_map_port)
        self.assertEqual(rx_pkt[UDPerror].dport,
                         self.ipv6_udp_or_tcp_internet_port)

    #
    # Translation of ICMP Echo Request v6 -> v4 direction
    # Received packet should be translated into an IPv4 Echo Request.
    #

    def test_map_t_echo_request_ip6_to_ip4(self):
        """ MAP-T echo request IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        icmp = ICMPv6EchoRequest()
        icmp.id = self.ipv6_udp_or_tcp_map_port
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-request").type)
        self.assertEqual(rx_pkt[ICMP].code, 0)
        self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)

    #
    # Translation of ICMP Echo Reply v6 -> v4 direction
    # Received packet should be translated into an IPv4 Echo Reply.
    #

    def test_map_t_echo_reply_ip6_to_ip4(self):
        """ MAP-T echo reply IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        icmp = ICMPv6EchoReply(id=self.ipv6_udp_or_tcp_map_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-reply").type)
        self.assertEqual(rx_pkt[ICMP].code, 0)
        self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)

    #
    # Translation of ICMP Packet Too Big v6 -> v4 direction
    # Received packet should be translated into an IPv4 Dest Unreachable.
    #

    def test_map_t_packet_too_big_ip6_to_ip4(self):
        """ MAP-T packet too big IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        icmp = ICMPv6PacketTooBig(mtu=1280)
        ip_inner = IPv6(src=self.ipv6_map_address,
                        dst=self.ipv6_cpe_address)
        udp_inner = UDP(sport=self.ipv6_udp_or_tcp_internet_port,
                        dport=self.ipv6_udp_or_tcp_map_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v4_address_check(rx_pkt)
        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="dest-unreach").type)
        self.assertEqual(rx_pkt[ICMP].code,
                         ICMP(code="fragmentation-needed").code)
        self.assertEqual(rx_pkt[ICMP].nexthopmtu,
                         tx_pkt[ICMPv6PacketTooBig].mtu - 20)
        self.assertTrue(rx_pkt.haslayer(IPerror))
        self.assertTrue(rx_pkt.haslayer(UDPerror))
        self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
        self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
        self.assertEqual(rx_pkt[UDPerror].sport,
                         self.ipv4_udp_or_tcp_internet_port)
        self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)

    #
    # Translation of ICMP Time Exceeded v6 -> v4 direction
    # Received packet should be translated into an IPv4 Time Exceeded.
    #

    def test_map_t_time_exceeded_ip6_to_ip4(self):
        """ MAP-T time exceeded IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        icmp = ICMPv6TimeExceeded()
        ip_inner = IPv6(src=self.ipv6_map_address,
                        dst=self.ipv6_cpe_address, hlim=1)
        udp_inner = UDP(sport=self.ipv6_udp_or_tcp_internet_port,
                        dport=self.ipv6_udp_or_tcp_map_port)
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg0.get_capture(1)
        rx_pkt = rx_pkts[0]

        self.v4_address_check(rx_pkt)
        self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
        self.assertEqual(rx_pkt[ICMP].type, ICMP(type="time-exceeded").type)
        self.assertEqual(rx_pkt[ICMP].code,
                         ICMP(code="ttl-zero-during-transit").code)
        self.assertEqual(rx_pkt[ICMP].ttl, tx_pkt[IPv6][1].hlim)
        self.assertTrue(rx_pkt.haslayer(IPerror))
        self.assertTrue(rx_pkt.haslayer(UDPerror))
        self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
        self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
        self.assertEqual(rx_pkt[UDPerror].sport,
                         self.ipv4_udp_or_tcp_internet_port)
        self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)

    #
    # Spoofed IPv4 Source Address v6 -> v4 direction
    # Send a packet with a wrong IPv4 address embedded in bits 72-103.
    # The BR should either drop the packet, or rewrite the spoofed
    # source IPv4 as the actual source IPv4 address.
    # The BR really should drop the packet.
    #

    def test_map_t_spoof_ipv4_src_addr_ip6_to_ip4(self):
        """ MAP-T spoof ipv4 src addr IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_spoof_address,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv4 spoof address")

    #
    # Spoofed IPv4 Source Prefix v6 -> v4 direction
    # Send a packet with a wrong IPv4 prefix embedded in bits 72-103.
    # The BR should either drop the packet, or rewrite the source IPv4
    # to the prefix that matches the source IPv4 address.
    #

    def test_map_t_spoof_ipv4_src_prefix_ip6_to_ip4(self):
        """ MAP-T spoof ipv4 src prefix IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_spoof_prefix,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv4 spoof prefix")

    #
    # Spoofed IPv6 PSID v6 -> v4 direction
    # Send a packet with a wrong IPv6 port PSID
    # The BR should drop the packet.
    #

    def test_map_t_spoof_psid_ip6_to_ip4(self):
        """ MAP-T spoof psid IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_spoof_psid,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv6 spoof PSID")

    #
    # Spoofed IPv6 subnet field v6 -> v4 direction
    # Send a packet with a wrong IPv6 subnet as "2001:db8:f1"
    # The BR should drop the packet.
    #

    def test_map_t_spoof_subnet_ip6_to_ip4(self):
        """ MAP-T spoof subnet IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_spoof_subnet,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv6 spoof subnet")

    #
    # Spoofed IPv6 port PSID v6 -> v4 direction
    # Send a packet with a wrong IPv6 port PSID
    # The BR should drop the packet.
    #

    def test_map_t_spoof_port_psid_ip6_to_ip4(self):
        """ MAP-T spoof port psid IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        udp = UDP(sport=self.ipv6_udp_or_tcp_spoof_port,
                  dport=self.ipv6_udp_or_tcp_internet_port)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv6 spoof port PSID")

    #
    # Spoofed IPv6 ICMP ID PSID v6 -> v4 direction
    # Send a packet with a wrong IPv6 IMCP ID PSID
    # The BR should drop the packet.
    #

    def test_map_t_spoof_icmp_id_psid_ip6_to_ip4(self):
        """ MAP-T spoof ICMP id psid IPv6 -> IPv4 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_address)
        icmp = ICMPv6EchoRequest()
        icmp.id = self.ipv6_udp_or_tcp_spoof_port
        payload = "H" * 10
        tx_pkt = eth / ip / icmp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        self.pg0.get_capture(0, timeout=1)
        self.pg0.assert_nothing_captured("Should drop IPv6 spoof port PSID")

    #
    # Map to Map - same rule, different address
    #

    @unittest.skip("Fixme: correct behavior needs clarification")
    def test_map_t_same_rule_diff_addr_ip6_to_ip4(self):
        """ MAP-T same rule, diff addr IPv6 -> IPv6 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_same_rule_diff_addr)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=1025)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

    #
    # Map to Map - same rule, same address
    #

    @unittest.skip("Fixme: correct behavior needs clarification")
    def test_map_t_same_rule_same_addr_ip6_to_ip4(self):
        """ MAP-T same rule, same addr IPv6 -> IPv6 """

        eth = Ether(src=self.pg1.remote_mac,
                    dst=self.pg1.local_mac)
        ip = IPv6(src=self.ipv6_cpe_address,
                  dst=self.ipv6_map_same_rule_same_addr)
        udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
                  dport=1025)
        payload = "a" * 82
        tx_pkt = eth / ip / udp / payload

        self.pg_send(self.pg1, tx_pkt * 1)

        rx_pkts = self.pg1.get_capture(1)
        rx_pkt = rx_pkts[0]

if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)