Example #1
0
    def test_bier_head_o_udp(self):
        """BIER head over UDP"""

        #
        # Add a BIER table for sub-domain 1, set 0, and BSL 256
        #
        bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256)
        bt = VppBierTable(self, bti, 77)
        bt.add_vpp_config()

        #
        # 1 bit positions via 1 next hops
        #
        nh1 = "10.0.0.1"
        ip_route = VppIpRoute(self, nh1, 32,
                              [VppRoutePath(self.pg1.remote_ip4,
                                            self.pg1.sw_if_index,
                                            labels=[VppMplsLabel(2001)])])
        ip_route.add_vpp_config()

        udp_encap = VppUdpEncap(self,
                                self.pg0.local_ip4,
                                nh1,
                                330, 8138)
        udp_encap.add_vpp_config()

        bier_route = VppBierRoute(
            self, bti, 1,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          is_udp_encap=1,
                          next_hop_id=udp_encap.id)])
        bier_route.add_vpp_config()

        #
        # An 2 imposition objects with all bit-positions set
        # only use the second, but creating 2 tests with a non-zero
        # value index in the route add
        #
        bi = VppBierImp(self, bti, 333, scapy.compat.chb(0xff) * 32)
        bi.add_vpp_config()
        bi2 = VppBierImp(self, bti, 334, scapy.compat.chb(0xff) * 32)
        bi2.add_vpp_config()

        #
        # Add a multicast route that will forward into the BIER doamin
        #
        route_ing_232_1_1_1 = VppIpMRoute(
            self,
            "0.0.0.0",
            "232.1.1.1", 32,
            MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
            paths=[VppMRoutePath(self.pg0.sw_if_index,
                                 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
                   VppMRoutePath(0xffffffff,
                                 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
                                 proto=DpoProto.DPO_PROTO_BIER,
                                 bier_imp=bi2.bi_index)])
        route_ing_232_1_1_1.add_vpp_config()

        #
        # inject a packet an IP. We expect it to be BIER and UDP encapped,
        #
        p = (Ether(dst=self.pg0.local_mac,
                   src=self.pg0.remote_mac) /
             IP(src="1.1.1.1", dst="232.1.1.1") /
             UDP(sport=1234, dport=1234))

        self.pg0.add_stream([p])
        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx = self.pg1.get_capture(1)

        #
        # Encap Stack is, eth, IP, UDP, BIFT, BIER
        #
        self.assertEqual(rx[0][IP].src, self.pg0.local_ip4)
        self.assertEqual(rx[0][IP].dst, nh1)
        self.assertEqual(rx[0][UDP].sport, 330)
        self.assertEqual(rx[0][UDP].dport, 8138)
        self.assertEqual(rx[0][BIFT].bsl, BIERLength.BIER_LEN_256)
        self.assertEqual(rx[0][BIFT].sd, 1)
        self.assertEqual(rx[0][BIFT].set, 0)
        self.assertEqual(rx[0][BIFT].ttl, 64)
        self.assertEqual(rx[0][BIER].length, 2)
Example #2
0
    def test_udp_encap(self):
        """ UDP Encap test
        """

        #
        # construct a UDP encap object through each of the peers
        # v4 through the first two peears, v6 through the second.
        #
        udp_encap_0 = VppUdpEncap(self, self.pg0.local_ip4,
                                  self.pg0.remote_ip4, 330, 440)
        udp_encap_1 = VppUdpEncap(self,
                                  self.pg1.local_ip4,
                                  self.pg1.remote_ip4,
                                  331,
                                  441,
                                  table_id=1)
        udp_encap_2 = VppUdpEncap(self,
                                  self.pg2.local_ip6,
                                  self.pg2.remote_ip6,
                                  332,
                                  442,
                                  table_id=2)
        udp_encap_3 = VppUdpEncap(self,
                                  self.pg3.local_ip6,
                                  self.pg3.remote_ip6,
                                  333,
                                  443,
                                  table_id=3)
        udp_encap_0.add_vpp_config()
        udp_encap_1.add_vpp_config()
        udp_encap_2.add_vpp_config()
        udp_encap_3.add_vpp_config()

        self.logger.info(self.vapi.cli("sh udp encap"))

        self.assertTrue(find_udp_encap(self, udp_encap_2))
        self.assertTrue(find_udp_encap(self, udp_encap_3))
        self.assertTrue(find_udp_encap(self, udp_encap_0))
        self.assertTrue(find_udp_encap(self, udp_encap_1))

        #
        # Routes via each UDP encap object - all combinations of v4 and v6.
        #
        route_4o4 = VppIpRoute(self, "1.1.0.1", 32, [
            VppRoutePath("0.0.0.0",
                         0xFFFFFFFF,
                         is_udp_encap=1,
                         next_hop_id=udp_encap_0.id)
        ])
        route_4o6 = VppIpRoute(self, "1.1.2.1", 32, [
            VppRoutePath("0.0.0.0",
                         0xFFFFFFFF,
                         is_udp_encap=1,
                         next_hop_id=udp_encap_2.id)
        ])
        route_6o4 = VppIpRoute(self,
                               "2001::1",
                               128, [
                                   VppRoutePath("0.0.0.0",
                                                0xFFFFFFFF,
                                                is_udp_encap=1,
                                                next_hop_id=udp_encap_1.id)
                               ],
                               is_ip6=1)
        route_6o6 = VppIpRoute(self,
                               "2001::3",
                               128, [
                                   VppRoutePath("0.0.0.0",
                                                0xFFFFFFFF,
                                                is_udp_encap=1,
                                                next_hop_id=udp_encap_3.id)
                               ],
                               is_ip6=1)
        route_4o4.add_vpp_config()
        route_4o6.add_vpp_config()
        route_6o6.add_vpp_config()
        route_6o4.add_vpp_config()

        #
        # 4o4 encap
        #
        p_4o4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.0.1") /
                 UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4o4 * 65, self.pg0)
        for p in rx:
            self.validate_outer4(p, udp_encap_0)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o4)
        self.assertEqual(udp_encap_0.get_stats()['packets'], 65)

        #
        # 4o6 encap
        #
        p_4o6 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.2.1") /
                 UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4o6 * 65, self.pg2)
        for p in rx:
            self.validate_outer6(p, udp_encap_2)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o6)
        self.assertEqual(udp_encap_2.get_stats()['packets'], 65)

        #
        # 6o4 encap
        #
        p_6o4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::1") /
                 UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o4 * 65, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o4)
        self.assertEqual(udp_encap_1.get_stats()['packets'], 65)

        #
        # 6o6 encap
        #
        p_6o6 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::3") /
                 UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o6 * 65, self.pg3)
        for p in rx:
            self.validate_outer6(p, udp_encap_3)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o6)
        self.assertEqual(udp_encap_3.get_stats()['packets'], 65)

        #
        # A route with an output label
        # the TTL of the inner packet is decremented on LSP ingress
        #
        route_4oMPLSo4 = VppIpRoute(self, "1.1.2.22", 32, [
            VppRoutePath("0.0.0.0",
                         0xFFFFFFFF,
                         is_udp_encap=1,
                         next_hop_id=1,
                         labels=[VppMplsLabel(66)])
        ])
        route_4oMPLSo4.add_vpp_config()

        p_4omo4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.2.22") /
                   UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4omo4 * 65, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = MPLS(p["UDP"].payload.load)
            self.validate_inner4(p, p_4omo4, ttl=63)
        self.assertEqual(udp_encap_1.get_stats()['packets'], 130)
Example #3
0
    def test_udp_encap(self):
        """ UDP Encap test
        """

        #
        # construct a UDP encap object through each of the peers
        # v4 through the first two peears, v6 through the second.
        #
        udp_encap_0 = VppUdpEncap(self,
                                  self.pg0.local_ip4,
                                  self.pg0.remote_ip4,
                                  330, 440)
        udp_encap_1 = VppUdpEncap(self,
                                  self.pg1.local_ip4,
                                  self.pg1.remote_ip4,
                                  331, 441,
                                  table_id=1)
        udp_encap_2 = VppUdpEncap(self,
                                  self.pg2.local_ip6,
                                  self.pg2.remote_ip6,
                                  332, 442,
                                  table_id=2)
        udp_encap_3 = VppUdpEncap(self,
                                  self.pg3.local_ip6,
                                  self.pg3.remote_ip6,
                                  333, 443,
                                  table_id=3)
        udp_encap_0.add_vpp_config()
        udp_encap_1.add_vpp_config()
        udp_encap_2.add_vpp_config()
        udp_encap_3.add_vpp_config()

        self.logger.info(self.vapi.cli("sh udp encap"))

        self.assertTrue(find_udp_encap(self, udp_encap_2))
        self.assertTrue(find_udp_encap(self, udp_encap_3))
        self.assertTrue(find_udp_encap(self, udp_encap_0))
        self.assertTrue(find_udp_encap(self, udp_encap_1))

        #
        # Routes via each UDP encap object - all combinations of v4 and v6.
        #
        route_4o4 = VppIpRoute(self, "1.1.0.1", 32,
                               [VppRoutePath("0.0.0.0",
                                             0xFFFFFFFF,
                                             is_udp_encap=1,
                                             next_hop_id=udp_encap_0.id)])
        route_4o6 = VppIpRoute(self, "1.1.2.1", 32,
                               [VppRoutePath("0.0.0.0",
                                             0xFFFFFFFF,
                                             is_udp_encap=1,
                                             next_hop_id=udp_encap_2.id)])
        route_6o4 = VppIpRoute(self, "2001::1", 128,
                               [VppRoutePath("0.0.0.0",
                                             0xFFFFFFFF,
                                             is_udp_encap=1,
                                             next_hop_id=udp_encap_1.id)],
                               is_ip6=1)
        route_6o6 = VppIpRoute(self, "2001::3", 128,
                               [VppRoutePath("0.0.0.0",
                                             0xFFFFFFFF,
                                             is_udp_encap=1,
                                             next_hop_id=udp_encap_3.id)],
                               is_ip6=1)
        route_4o4.add_vpp_config()
        route_4o6.add_vpp_config()
        route_6o6.add_vpp_config()
        route_6o4.add_vpp_config()

        #
        # 4o4 encap
        #
        p_4o4 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.0.1") /
                 UDP(sport=1234, dport=1234) /
                 Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4o4*65, self.pg0)
        for p in rx:
            self.validate_outer4(p, udp_encap_0)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o4)
        self.assertEqual(udp_encap_0.get_stats()['packets'], 65)

        #
        # 4o6 encap
        #
        p_4o6 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.2.1") /
                 UDP(sport=1234, dport=1234) /
                 Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4o6*65, self.pg2)
        for p in rx:
            self.validate_outer6(p, udp_encap_2)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o6)
        self.assertEqual(udp_encap_2.get_stats()['packets'], 65)

        #
        # 6o4 encap
        #
        p_6o4 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::1") /
                 UDP(sport=1234, dport=1234) /
                 Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o4*65, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o4)
        self.assertEqual(udp_encap_1.get_stats()['packets'], 65)

        #
        # 6o6 encap
        #
        p_6o6 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::3") /
                 UDP(sport=1234, dport=1234) /
                 Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o6*65, self.pg3)
        for p in rx:
            self.validate_outer6(p, udp_encap_3)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o6)
        self.assertEqual(udp_encap_3.get_stats()['packets'], 65)

        #
        # A route with an output label
        # the TTL of the inner packet is decremented on LSP ingress
        #
        route_4oMPLSo4 = VppIpRoute(self, "1.1.2.22", 32,
                                    [VppRoutePath("0.0.0.0",
                                                  0xFFFFFFFF,
                                                  is_udp_encap=1,
                                                  next_hop_id=1,
                                                  labels=[VppMplsLabel(66)])])
        route_4oMPLSo4.add_vpp_config()

        p_4omo4 = (Ether(src=self.pg0.remote_mac,
                         dst=self.pg0.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.2.22") /
                   UDP(sport=1234, dport=1234) /
                   Raw('\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4omo4*65, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = MPLS(p["UDP"].payload.load)
            self.validate_inner4(p, p_4omo4, ttl=63)
        self.assertEqual(udp_encap_1.get_stats()['packets'], 130)
Example #4
0
    def test_bier_head_o_udp(self):
        """BIER head over UDP"""

        #
        # Add a BIER table for sub-domain 1, set 0, and BSL 256
        #
        bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256)
        bt = VppBierTable(self, bti, 77)
        bt.add_vpp_config()

        #
        # 1 bit positions via 1 next hops
        #
        nh1 = "10.0.0.1"
        ip_route = VppIpRoute(self, nh1, 32, [
            VppRoutePath(self.pg1.remote_ip4,
                         self.pg1.sw_if_index,
                         labels=[VppMplsLabel(2001)])
        ])
        ip_route.add_vpp_config()

        udp_encap = VppUdpEncap(self, self.pg0.local_ip4, nh1, 330, 8138)
        udp_encap.add_vpp_config()

        bier_route = VppBierRoute(self, bti, 1, [
            VppRoutePath("0.0.0.0",
                         0xFFFFFFFF,
                         type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                         next_hop_id=udp_encap.id)
        ])
        bier_route.add_vpp_config()

        #
        # An 2 imposition objects with all bit-positions set
        # only use the second, but creating 2 tests with a non-zero
        # value index in the route add
        #
        bi = VppBierImp(self, bti, 333, scapy.compat.chb(0xff) * 32)
        bi.add_vpp_config()
        bi2 = VppBierImp(self, bti, 334, scapy.compat.chb(0xff) * 32)
        bi2.add_vpp_config()

        #
        # Add a multicast route that will forward into the BIER doamin
        #
        route_ing_232_1_1_1 = VppIpMRoute(
            self,
            "0.0.0.0",
            "232.1.1.1",
            32,
            MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
            paths=[
                VppMRoutePath(self.pg0.sw_if_index,
                              MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
                VppMRoutePath(0xffffffff,
                              MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
                              proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
                              type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
                              bier_imp=bi2.bi_index)
            ])
        route_ing_232_1_1_1.add_vpp_config()

        #
        # inject a packet an IP. We expect it to be BIER and UDP encapped,
        #
        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
             IP(src="1.1.1.1", dst="232.1.1.1") / UDP(sport=1234, dport=1234))

        self.pg0.add_stream([p])
        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx = self.pg1.get_capture(1)

        #
        # Encap Stack is, eth, IP, UDP, BIFT, BIER
        #
        self.assertEqual(rx[0][IP].src, self.pg0.local_ip4)
        self.assertEqual(rx[0][IP].dst, nh1)
        self.assertEqual(rx[0][UDP].sport, 330)
        self.assertEqual(rx[0][UDP].dport, 8138)
        self.assertEqual(rx[0][BIFT].bsl, BIERLength.BIER_LEN_256)
        self.assertEqual(rx[0][BIFT].sd, 1)
        self.assertEqual(rx[0][BIFT].set, 0)
        self.assertEqual(rx[0][BIFT].ttl, 64)
        self.assertEqual(rx[0][BIER].length, 2)
Example #5
0
    def test_udp_encap(self):
        """UDP Encap test"""

        #
        # construct a UDP encap object through each of the peers
        # v4 through the first two peers, v6 through the second.
        # The last encap is v4 and is used to check the codepath
        # where 2 different udp encap objects are processed at the
        # same time
        #
        udp_encap_0 = VppUdpEncap(self, self.pg0.local_ip4,
                                  self.pg0.remote_ip4, 330, 440)
        udp_encap_1 = VppUdpEncap(self,
                                  self.pg1.local_ip4,
                                  self.pg1.remote_ip4,
                                  331,
                                  441,
                                  table_id=1)
        udp_encap_2 = VppUdpEncap(self,
                                  self.pg2.local_ip6,
                                  self.pg2.remote_ip6,
                                  332,
                                  442,
                                  table_id=2)
        udp_encap_3 = VppUdpEncap(self,
                                  self.pg3.local_ip6,
                                  self.pg3.remote_ip6,
                                  333,
                                  443,
                                  table_id=3)
        udp_encap_4 = VppUdpEncap(self, self.pg0.local_ip4,
                                  self.pg0.remote_ip4, 334, 444)
        udp_encap_0.add_vpp_config()
        udp_encap_1.add_vpp_config()
        udp_encap_2.add_vpp_config()
        udp_encap_3.add_vpp_config()
        udp_encap_4.add_vpp_config()

        self.logger.info(self.vapi.cli("sh udp encap"))

        self.assertTrue(find_udp_encap(self, udp_encap_2))
        self.assertTrue(find_udp_encap(self, udp_encap_3))
        self.assertTrue(find_udp_encap(self, udp_encap_0))
        self.assertTrue(find_udp_encap(self, udp_encap_1))
        self.assertTrue(find_udp_encap(self, udp_encap_4))

        #
        # Routes via each UDP encap object - all combinations of v4 and v6.
        #
        route_4o4 = VppIpRoute(
            self,
            "1.1.0.1",
            24,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=udp_encap_0.id,
                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP4,
                )
            ],
            table_id=1,
        )
        # specific route to match encap4, to test encap of 2 packets using 2
        # different encap
        route_4o4_2 = VppIpRoute(
            self,
            "1.1.0.2",
            32,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=udp_encap_4.id,
                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP4,
                )
            ],
            table_id=1,
        )
        route_4o6 = VppIpRoute(
            self,
            "1.1.2.1",
            32,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=udp_encap_2.id,
                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP4,
                )
            ],
        )
        route_6o4 = VppIpRoute(
            self,
            "2001::1",
            128,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=udp_encap_1.id,
                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
                )
            ],
        )
        route_6o6 = VppIpRoute(
            self,
            "2001::3",
            128,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=udp_encap_3.id,
                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6,
                )
            ],
        )
        route_4o6.add_vpp_config()
        route_6o6.add_vpp_config()
        route_6o4.add_vpp_config()
        route_4o4.add_vpp_config()
        route_4o4_2.add_vpp_config()

        #
        # 4o4 encap
        # we add a single packet matching the last encap at the beginning of
        # the packet vector so that we encap 2 packets with different udp
        # encap object at the same time
        #
        p_4o4 = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.0.1") /
                 UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        p_4o4_2 = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.0.2") /
                   UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        rx = self.send_and_expect(self.pg1,
                                  p_4o4_2 * 1 + p_4o4 * (NUM_PKTS - 1),
                                  self.pg0)
        # checking encap4 magic packet
        p = rx.pop(0)
        self.validate_outer4(p, udp_encap_4)
        p = IP(p["UDP"].payload.load)
        self.validate_inner4(p, p_4o4_2)
        self.assertEqual(udp_encap_4.get_stats()["packets"], 1)
        # checking remaining packets for encap0
        for p in rx:
            self.validate_outer4(p, udp_encap_0)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o4)
        self.assertEqual(udp_encap_0.get_stats()["packets"], NUM_PKTS - 1)

        #
        # 4o6 encap
        #
        p_4o6 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.2.1") /
                 UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        rx = self.send_and_expect(self.pg0, p_4o6 * NUM_PKTS, self.pg2)
        for p in rx:
            self.validate_outer6(p, udp_encap_2)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o6)
        self.assertEqual(udp_encap_2.get_stats()["packets"], NUM_PKTS)

        #
        # 6o4 encap
        #
        p_6o4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::1") /
                 UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        rx = self.send_and_expect(self.pg0, p_6o4 * NUM_PKTS, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o4)
        self.assertEqual(udp_encap_1.get_stats()["packets"], NUM_PKTS)

        #
        # 6o6 encap
        #
        p_6o6 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::3") /
                 UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        rx = self.send_and_expect(self.pg0, p_6o6 * NUM_PKTS, self.pg3)
        for p in rx:
            self.validate_outer6(p, udp_encap_3)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o6)
        self.assertEqual(udp_encap_3.get_stats()["packets"], NUM_PKTS)

        #
        # A route with an output label
        # the TTL of the inner packet is decremented on LSP ingress
        #
        route_4oMPLSo4 = VppIpRoute(
            self,
            "1.1.2.22",
            32,
            [
                VppRoutePath(
                    "0.0.0.0",
                    0xFFFFFFFF,
                    type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                    next_hop_id=1,
                    labels=[VppMplsLabel(66)],
                )
            ],
        )
        route_4oMPLSo4.add_vpp_config()

        p_4omo4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.2.22") /
                   UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100))
        rx = self.send_and_expect(self.pg0, p_4omo4 * NUM_PKTS, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = MPLS(p["UDP"].payload.load)
            self.validate_inner4(p, p_4omo4, ttl=63)
        self.assertEqual(udp_encap_1.get_stats()["packets"], 2 * NUM_PKTS)