tests: move plugin tests to src/plugins/*/test

- Relocate plugin tests for 'make test' into
  src/plugins/*/test so that plugin test cases
  are co-located with the plugin source code.

Type: refactor
Ticket: VPP-1754

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I503e6a43528e14981799b735fa65674155713f67
(cherry picked from commit a43c93f8554ad7418e31be3791b3fb71232f60ac)

2 files changed, 2142 insertions, 0 deletions

diff --git a/src/plugins/srv6-am/test/test_srv6.py b/src/plugins/srv6-am/test/test_srv6.py
new file mode 100644
index 00000000000..b3e69724028
--- /dev/null
+++ b/src/plugins/srv6-am/test/test_srv6.py
@@ -0,0 +1,2141 @@
+#!/usr/bin/env python
+
+import unittest
+import binascii
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+import scapy.compat
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from scapy.utils import inet_pton, inet_ntop
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+    """ SRv6 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestSRv6, cls).tearDownClass()
+
+    def setUp(self):
+        """ Perform test setup before each test case.
+        """
+        super(TestSRv6, self).setUp()
+
+        # packet sizes, inclusive L2 overhead
+        self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+        # reset packet_infos
+        self.reset_packet_infos()
+
+    def tearDown(self):
+        """ Clean up test setup after each test case.
+        """
+        self.teardown_interfaces()
+
+        super(TestSRv6, self).tearDown()
+
+    def configure_interface(self,
+                            interface,
+                            ipv6=False, ipv4=False,
+                            ipv6_table_id=0, ipv4_table_id=0):
+        """ Configure interface.
+        :param ipv6: configure IPv6 on interface
+        :param ipv4: configure IPv4 on interface
+        :param ipv6_table_id: FIB table_id for IPv6
+        :param ipv4_table_id: FIB table_id for IPv4
+        """
+        self.logger.debug("Configuring interface %s" % (interface.name))
+        if ipv6:
+            self.logger.debug("Configuring IPv6")
+            interface.set_table_ip6(ipv6_table_id)
+            interface.config_ip6()
+            interface.resolve_ndp(timeout=5)
+        if ipv4:
+            self.logger.debug("Configuring IPv4")
+            interface.set_table_ip4(ipv4_table_id)
+            interface.config_ip4()
+            interface.resolve_arp()
+        interface.admin_up()
+
+    def setup_interfaces(self, ipv6=[], ipv4=[],
+                         ipv6_table_id=[], ipv4_table_id=[]):
+        """ Create and configure interfaces.
+
+        :param ipv6: list of interface IPv6 capabilities
+        :param ipv4: list of interface IPv4 capabilities
+        :param ipv6_table_id: list of intf IPv6 FIB table_ids
+        :param ipv4_table_id: list of intf IPv4 FIB table_ids
+        :returns: List of created interfaces.
+        """
+        # how many interfaces?
+        if len(ipv6):
+            count = len(ipv6)
+        else:
+            count = len(ipv4)
+        self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+        # fill up ipv6 and ipv4 lists if needed
+        # not enabled (False) is the default
+        if len(ipv6) < count:
+            ipv6 += (count - len(ipv6)) * [False]
+        if len(ipv4) < count:
+            ipv4 += (count - len(ipv4)) * [False]
+
+        # fill up table_id lists if needed
+        # table_id 0 (global) is the default
+        if len(ipv6_table_id) < count:
+            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+        if len(ipv4_table_id) < count:
+            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+        # create 'count' pg interfaces
+        self.create_pg_interfaces(range(count))
+
+        # setup all interfaces
+        for i in range(count):
+            intf = self.pg_interfaces[i]
+            self.configure_interface(intf,
+                                     ipv6[i], ipv4[i],
+                                     ipv6_table_id[i], ipv4_table_id[i])
+
+        if any(ipv6):
+            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+        if any(ipv4):
+            self.logger.debug(self.vapi.cli("show ip arp"))
+        self.logger.debug(self.vapi.cli("show interface"))
+        self.logger.debug(self.vapi.cli("show hardware"))
+
+        return self.pg_interfaces
+
+    def teardown_interfaces(self):
+        """ Unconfigure and bring down interface.
+        """
+        self.logger.debug("Tearing down interfaces")
+        # tear down all interfaces
+        # AFAIK they cannot be deleted
+        for i in self.pg_interfaces:
+            self.logger.debug("Tear down interface %s" % (i.name))
+            i.admin_down()
+            i.unconfig()
+            i.set_table_ip4(0)
+            i.set_table_ip6(0)
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Encaps(self):
+        """ Test SRv6 Transit.Encaps behavior for IPv6.
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv6 traffic to a7::/64 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="a7::", mask_width=64,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH and IPv6
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+            dst_inner,
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Insert(self):
+        """ Test SRv6 Transit.Insert behavior (IPv6 only).
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=0,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv6 traffic to a7::/64 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="a7::", mask_width=64,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Insert)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Encaps_IPv4(self):
+        """ Test SRv6 Transit.Encaps behavior for IPv4.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv4 only
+        # destination interface is IPv6 only
+        self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="7.1.1.0", mask_width=24,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=0)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = '7.1.1.123'
+        pkts = []
+
+        # create IPv4 packets
+        packet_header = self.create_packet_header_IPv4(dst_inner)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps_IPv4)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skip("VPP crashes after running this test")
+    def test_SRv6_T_Encaps_L2(self):
+        """ Test SRv6 Transit.Encaps behavior for L2.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv4 only TODO?
+        # destination interface is IPv6 only
+        self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=1,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # steer L2 traffic into SRv6 Policy
+        # use the bsid of the above self.sr_policy
+        pol_steering = VppSRv6Steering(
+                        self,
+                        bsid=self.sr_policy.bsid,
+                        prefix="::", mask_width=0,
+                        traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
+                        sr_policy_index=0, table_id=0,
+                        sw_if_index=self.pg0.sw_if_index)
+        pol_steering.add_vpp_config()
+
+        # log the sr steering policies
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        pkts = []
+
+        # create L2 packets without dot1q header
+        packet_header = self.create_packet_header_L2()
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create L2 packets with dot1q header
+        packet_header = self.create_packet_header_L2(vlan=123)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_T_Encaps_L2)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SR steering
+        pol_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End(self):
+        """ Test SRv6 End (without PSP) behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End without PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::0'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6='::',
+                        end_psp=0,
+                        sw_if_index=0,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with USP needs 2nd SRH
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                dst_inner,
+                sidlist=['a5::', 'a4::', 'a3::'],
+                segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                dst_inner,
+                sidlist=['a4::', 'a3::', 'a2::'],
+                segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # TODO: test behavior with SL=0 packet (needs 2*SRH?)
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_with_PSP(self):
+        """ Test SRv6 End with PSP behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::0'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6='::',
+                        end_psp=1,
+                        sw_if_index=0,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_PSP)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_X(self):
+        """ Test SRv6 End.X (without PSP) behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True, True])
+
+        # configure FIB entries
+        # a4::/64 via pg1 and pg2
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(self.pg1.remote_ip6,
+                                         self.pg1.sw_if_index),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index)])
+        route.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+        # configure SRv6 localSID End.X without PSP behavior
+        # End.X points to interface pg1
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6=self.pg1.remote_ip6,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::c4'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::c4', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End (no PSP)
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_X_with_PSP(self):
+        """ Test SRv6 End.X with PSP behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True, True])
+
+        # configure FIB entries
+        # a4::/64 via pg1 and pg2
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(
+                               self.pg1.remote_ip6,
+                               self.pg1.sw_if_index),
+                            VppRoutePath(self.pg2.remote_ip6,
+                                         self.pg2.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure SRv6 localSID End with PSP behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6=self.pg1.remote_ip6,
+                        end_psp=1,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=2, SL=1)
+        # send one packet per SL value per packet size
+        # SL=0 packet with localSID End with PSP is dropped
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'
+        pkts = []
+
+        # packets with segments-left 2, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a5::', 'a4::', 'a3::c4'],
+                    segleft=2)
+        # create traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with segments-left 1, active segment a3::
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                    dst_inner,
+                    sidlist=['a4::', 'a3::c4', 'a2::'],
+                    segleft=1)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End with PSP
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_PSP)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX6(self):
+        """ Test SRv6 End.DX6 behavior.
+        """
+        # send traffic to one destination interface
+        # source and destination interfaces are IPv6 only
+        self.setup_interfaces(ipv6=[True, True])
+
+        # configure SRv6 localSID End.DX6 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6=self.pg1.remote_ip6,
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX6
+        packet_header = self.create_packet_header_IPv6_IPv6(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX6)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DT6(self):
+        """ Test SRv6 End.DT6 behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # all interfaces are IPv6 only
+        # source interface in global FIB (0)
+        # destination interfaces in global and vrf
+        vrf_1 = 1
+        ipt = VppIpTable(self, vrf_1, is_ip6=True)
+        ipt.add_vpp_config()
+        self.setup_interfaces(ipv6=[True, True, True],
+                              ipv6_table_id=[0, 0, vrf_1])
+
+        # configure FIB entries
+        # a4::/64 is reachable
+        #     via pg1 in table 0 (global)
+        #     and via pg2 in table vrf_1
+        route0 = VppIpRoute(self, "a4::", 64,
+                            [VppRoutePath(self.pg1.remote_ip6,
+                                          self.pg1.sw_if_index,
+                                          nh_table_id=0)],
+                            table_id=0)
+        route0.add_vpp_config()
+        route1 = VppIpRoute(self, "a4::", 64,
+                            [VppRoutePath(self.pg2.remote_ip6,
+                                          self.pg2.sw_if_index,
+                                          nh_table_id=vrf_1)],
+                            table_id=vrf_1)
+        route1.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+        # configure SRv6 localSID End.DT6 behavior
+        # Note:
+        # fib_table: where the localsid is installed
+        # sw_if_index: in T-variants of localsid this is the vrf table_id
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6='::',
+                        end_psp=0,
+                        sw_if_index=vrf_1,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a4::1234'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DT6
+        packet_header = self.create_packet_header_IPv6_IPv6(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End.DX6
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+                                  self.compare_rx_tx_packet_End_DX6)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX4(self):
+        """ Test SRv6 End.DX4 behavior.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv6 only
+        # destination interface is IPv4 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
+
+        # configure SRv6 localSID End.DX4 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
+                        nh_addr4=self.pg1.remote_ip4,
+                        nh_addr6='::',
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = '4.1.1.123'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv4 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX4
+        packet_header = self.create_packet_header_IPv6_IPv4(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX4)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DT4(self):
+        """ Test SRv6 End.DT4 behavior.
+        """
+        # create three interfaces (1 source, 2 destinations)
+        # source interface is IPv6-only
+        # destination interfaces are IPv4 only
+        # source interface in global FIB (0)
+        # destination interfaces in global and vrf
+        vrf_1 = 1
+        ipt = VppIpTable(self, vrf_1)
+        ipt.add_vpp_config()
+        self.setup_interfaces(ipv6=[True, False, False],
+                              ipv4=[False, True, True],
+                              ipv6_table_id=[0, 0, 0],
+                              ipv4_table_id=[0, 0, vrf_1])
+
+        # configure FIB entries
+        # 4.1.1.0/24 is reachable
+        #     via pg1 in table 0 (global)
+        #     and via pg2 in table vrf_1
+        route0 = VppIpRoute(self, "4.1.1.0", 24,
+                            [VppRoutePath(self.pg1.remote_ip4,
+                                          self.pg1.sw_if_index,
+                                          nh_table_id=0)],
+                            table_id=0)
+        route0.add_vpp_config()
+        route1 = VppIpRoute(self, "4.1.1.0", 24,
+                            [VppRoutePath(self.pg2.remote_ip4,
+                                          self.pg2.sw_if_index,
+                                          nh_table_id=vrf_1)],
+                            table_id=vrf_1)
+        route1.add_vpp_config()
+        self.logger.debug(self.vapi.cli("show ip fib"))
+
+        # configure SRv6 localSID End.DT6 behavior
+        # Note:
+        # fib_table: where the localsid is installed
+        # sw_if_index: in T-variants of localsid: vrf table_id
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6='::',
+                        end_psp=0,
+                        sw_if_index=vrf_1,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # create IPv6 packets with SRH (SL=0)
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        dst_inner = '4.1.1.123'  # inner header destination address
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+                        dst_inner,
+                        sidlist=['a3::c4', 'a2::', 'a1::'],
+                        segleft=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, IPv6 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX4
+        packet_header = self.create_packet_header_IPv6_IPv4(
+                                            dst_inner,
+                                            dst_outer='a3::c4')
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        # using same comparison function as End.DX4
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+                                  self.compare_rx_tx_packet_End_DX4)
+
+        # assert nothing was received on the other interface (pg2)
+        self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def test_SRv6_End_DX2(self):
+        """ Test SRv6 End.DX2 behavior.
+        """
+        # send traffic to one destination interface
+        # source interface is IPv6 only
+        self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
+
+        # configure SRv6 localSID End.DX2 behavior
+        localsid = VppSRv6LocalSID(
+                        self, localsid={'addr': 'A3::C4'},
+                        behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
+                        nh_addr4='0.0.0.0',
+                        nh_addr6='::',
+                        end_psp=0,
+                        sw_if_index=self.pg1.sw_if_index,
+                        vlan_index=0,
+                        fib_table=0)
+        localsid.add_vpp_config()
+        # log the localsids
+        self.logger.debug(self.vapi.cli("show sr localsid"))
+
+        # send one packet per packet size
+        count = len(self.pg_packet_sizes)
+        pkts = []
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        # L2 has no dot1q header
+        packet_header = self.create_packet_header_IPv6_SRH_L2(
+                            sidlist=['a3::c4', 'a2::', 'a1::'],
+                            segleft=0,
+                            vlan=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets with SRH, segments-left 0, active segment a3::c4
+        # L2 has dot1q header
+        packet_header = self.create_packet_header_IPv6_SRH_L2(
+                            sidlist=['a3::c4', 'a2::', 'a1::'],
+                            segleft=0,
+                            vlan=123)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, L2 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX2
+        # L2 has no dot1q header
+        packet_header = self.create_packet_header_IPv6_L2(
+                                            dst_outer='a3::c4',
+                                            vlan=0)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # packets without SRH, L2 in IPv6
+        # outer IPv6 dest addr is the localsid End.DX2
+        # L2 has dot1q header
+        packet_header = self.create_packet_header_IPv6_L2(
+                                            dst_outer='a3::c4',
+                                            vlan=123)
+        # add to traffic stream pg0->pg1
+        pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+                                  self.compare_rx_tx_packet_End_DX2)
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove SRv6 localSIDs
+        localsid.remove_vpp_config()
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    @unittest.skipUnless(0, "PC to fix")
+    def test_SRv6_T_Insert_Classifier(self):
+        """ Test SRv6 Transit.Insert behavior (IPv6 only).
+            steer packets using the classifier
+        """
+        # send traffic to one destination interface
+        # source and destination are IPv6 only
+        self.setup_interfaces(ipv6=[False, False, False, True, True])
+
+        # configure FIB entries
+        route = VppIpRoute(self, "a4::", 64,
+                           [VppRoutePath(
+                               self.pg4.remote_ip6,
+                               self.pg4.sw_if_index)])
+        route.add_vpp_config()
+
+        # configure encaps IPv6 source address
+        # needs to be done before SR Policy config
+        # TODO: API?
+        self.vapi.cli("set sr encaps source addr a3::")
+
+        bsid = 'a3::9999:1'
+        # configure SRv6 Policy
+        # Note: segment list order: first -> last
+        sr_policy = VppSRv6Policy(
+            self, bsid=bsid,
+            is_encap=0,
+            sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+            weight=1, fib_table=0,
+            segments=['a4::', 'a5::', 'a6::c7'],
+            source='a3::')
+        sr_policy.add_vpp_config()
+        self.sr_policy = sr_policy
+
+        # log the sr policies
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # add classify table
+        # mask on dst ip address prefix a7::/8
+        mask = '{!s:0<16}'.format('ff')
+        r = self.vapi.classify_add_del_table(
+            1,
+            binascii.unhexlify(mask),
+            match_n_vectors=(len(mask) - 1) // 32 + 1,
+            current_data_flag=1,
+            skip_n_vectors=2)  # data offset
+        self.assertIsNotNone(r, 'No response msg for add_del_table')
+        table_index = r.new_table_index
+
+        # add the source routing node as a ip6 inacl netxt node
+        r = self.vapi.add_node_next('ip6-inacl',
+                                    'sr-pl-rewrite-insert')
+        inacl_next_node_index = r.node_index
+
+        match = '{!s:0<16}'.format('a7')
+        r = self.vapi.classify_add_del_session(
+            1,
+            table_index,
+            binascii.unhexlify(match),
+            hit_next_index=inacl_next_node_index,
+            action=3,
+            metadata=0)  # sr policy index
+        self.assertIsNotNone(r, 'No response msg for add_del_session')
+
+        # log the classify table used in the steering policy
+        self.logger.info(self.vapi.cli("show classify table"))
+
+        r = self.vapi.input_acl_set_interface(
+            is_add=1,
+            sw_if_index=self.pg3.sw_if_index,
+            ip6_table_index=table_index)
+        self.assertIsNotNone(r,
+                             'No response msg for input_acl_set_interface')
+
+        # log the ip6 inacl
+        self.logger.info(self.vapi.cli("show inacl type ip6"))
+
+        # create packets
+        count = len(self.pg_packet_sizes)
+        dst_inner = 'a7::1234'
+        pkts = []
+
+        # create IPv6 packets without SRH
+        packet_header = self.create_packet_header_IPv6(dst_inner)
+        # create traffic stream pg3->pg4
+        pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # create IPv6 packets with SRH
+        # packets with segments-left 1, active segment a7::
+        packet_header = self.create_packet_header_IPv6_SRH(
+            sidlist=['a8::', 'a7::', 'a6::'],
+            segleft=1)
+        # create traffic stream pg3->pg4
+        pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
+                                       self.pg_packet_sizes, count))
+
+        # send packets and verify received packets
+        self.send_and_verify_pkts(self.pg3, pkts, self.pg4,
+                                  self.compare_rx_tx_packet_T_Insert)
+
+        # remove the interface l2 input feature
+        r = self.vapi.input_acl_set_interface(
+            is_add=0,
+            sw_if_index=self.pg3.sw_if_index,
+            ip6_table_index=table_index)
+        self.assertIsNotNone(r,
+                             'No response msg for input_acl_set_interface')
+
+        # log the ip6 inacl after cleaning
+        self.logger.info(self.vapi.cli("show inacl type ip6"))
+
+        # log the localsid counters
+        self.logger.info(self.vapi.cli("show sr localsid"))
+
+        # remove classifier SR steering
+        # classifier_steering.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr steering policies"))
+
+        # remove SR Policies
+        self.sr_policy.remove_vpp_config()
+        self.logger.info(self.vapi.cli("show sr policies"))
+
+        # remove classify session and table
+        r = self.vapi.classify_add_del_session(
+            0,
+            table_index,
+            binascii.unhexlify(match))
+        self.assertIsNotNone(r, 'No response msg for add_del_session')
+
+        r = self.vapi.classify_add_del_table(
+            0,
+            binascii.unhexlify(mask),
+            table_index=table_index)
+        self.assertIsNotNone(r, 'No response msg for add_del_table')
+
+        self.logger.info(self.vapi.cli("show classify table"))
+
+        # remove FIB entries
+        # done by tearDown
+
+        # cleanup interfaces
+        self.teardown_interfaces()
+
+    def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # IPv6:
+        # in: IPv6(A, B2)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
+        # IPv6 + SRH:
+        # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to expected sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to expected seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size expected seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the hop-limit field
+        #   -> update tx'ed hlim to the expected hlim
+        tx_ip.hlim = tx_ip.hlim - 1
+
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps for IPv4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps for IPv4 updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # IPv4:
+        # in: IPv4(A, B2)
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ip = tx_pkt.getlayer(IP)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # checks common to cases tx with and without SRH
+        # rx'ed packet should have SRH and IPv4 header
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        self.assertTrue(rx_ip.payload.haslayer(IP))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip.ttl = tx_ip.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip = IP(scapy.compat.raw(tx_ip))
+
+        self.assertEqual(rx_srh.payload, tx_ip)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Encaps for L2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Encaps for L2 updates the headers as follows:
+        # SR Policy seglist (S3, S2, S1)
+        # SR Policy source C
+        # L2:
+        # in: L2
+        # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+
+        tx_ether = tx_pkt.getlayer(Ether)
+
+        # expected segment-list
+        seglist = self.sr_policy.segments
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # rx'ed packet should have SRH
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # received ip.src should be equal to SR Policy source
+        self.assertEqual(rx_ip.src, sr_policy_source)
+        # received ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+        # rx'ed seglist should be equal to seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size seglist-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+        # nh should be "No Next Header" (59)
+        self.assertEqual(rx_srh.nh, 59)
+
+        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+        self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing T.Insert
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # T.Insert updates the headers as follows:
+        # IPv6:
+        # in: IPv6(A, B2)
+        # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
+        # IPv6 + SRH:
+        # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+        # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_srh2 = None
+        rx_ip3 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_srh = None
+        tx_ip2 = None
+        # some packets have been tx'ed with an SRH, some without it
+        # get SRH if tx'ed packet has it
+        if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
+            tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+            tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_udp = tx_pkt[UDP]
+
+        # expected segment-list (make copy of SR Policy segment list)
+        seglist = self.sr_policy.segments[:]
+        # expected seglist has initial dest addr as last segment
+        seglist.append(tx_ip.dst)
+        # reverse list to get order as in SRH
+        tx_seglist = seglist[::-1]
+
+        # get source address of SR Policy
+        sr_policy_source = self.sr_policy.source
+
+        # checks common to cases tx with and without SRH
+        # rx'ed packet should have SRH and only one IPv6 header
+        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+        self.assertFalse(rx_ip.payload.haslayer(IPv6))
+        # get SRH
+        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+        # rx'ed ip.src should be equal to tx'ed ip.src
+        self.assertEqual(rx_ip.src, tx_ip.src)
+        # rx'ed ip.dst should be equal to sidlist[lastentry]
+        self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+        # rx'ed seglist should be equal to expected seglist
+        self.assertEqual(rx_srh.addresses, tx_seglist)
+        # segleft should be equal to size(expected seglist)-1
+        self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+        # segleft should be equal to lastentry
+        self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+        if tx_srh:  # packet was tx'ed with SRH
+            # packet should have 2nd SRH
+            self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+            # get 2nd SRH
+            rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
+
+            # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
+            self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
+            # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
+            self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
+            # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
+            self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
+
+        else:  # packet was tx'ed without SRH
+            # rx packet should have no other SRH
+            self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End (without PSP)
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End (no PSP) updates the headers as follows:
+        # IPv6 + SRH:
+        # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+        # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we know the packet has been tx'ed
+        # with an inner IPv6 header and an SRH
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        tx_udp = tx_pkt[UDP]
+
+        # common checks, regardless of tx segleft value
+        # rx'ed packet should have 2nd IPv6 header
+        self.assertTrue(rx_ip.payload.haslayer(IPv6))
+        # get second (inner) IPv6 header
+        rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+
+        if tx_ip.segleft > 0:
+            # SRH should NOT have been popped:
+            #   End SID without PSP does not pop SRH if segleft>0
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+            # received ip.src should be equal to expected ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # sidlist should be unchanged
+            self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+            # segleft should have been decremented
+            self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+            # received ip.dst should be equal to sidlist[segleft]
+            self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+            # lastentry should be unchanged
+            self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+            # inner IPv6 packet (ip2) should be unchanged
+            self.assertEqual(rx_ip2.src, tx_ip2.src)
+            self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+        # else:  # tx_ip.segleft == 0
+            # TODO: Does this work with 2 SRHs in ingress packet?
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End with PSP
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End (PSP) updates the headers as follows:
+        # IPv6 + SRH (SL>1):
+        # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+        # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+        # IPv6 + SRH (SL=1):
+        # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+        # out: IPv6(A, S3)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+        rx_srh = None
+        rx_ip2 = None
+        rx_udp = rx_pkt[UDP]
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we know the packet has been tx'ed
+        # with an inner IPv6 header and an SRH
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+        tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+        tx_udp = tx_pkt[UDP]
+
+        # common checks, regardless of tx segleft value
+        self.assertTrue(rx_ip.payload.haslayer(IPv6))
+        rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+        # inner IPv6 packet (ip2) should be unchanged
+        self.assertEqual(rx_ip2.src, tx_ip2.src)
+        self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+
+        if tx_ip.segleft > 1:
+            # SRH should NOT have been popped:
+            #   End SID with PSP does not pop SRH if segleft>1
+            # rx'ed packet should have SRH
+            self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+            # received ip.src should be equal to expected ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # sidlist should be unchanged
+            self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+            # segleft should have been decremented
+            self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+            # received ip.dst should be equal to sidlist[segleft]
+            self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+            # lastentry should be unchanged
+            self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+
+        else:  # tx_ip.segleft <= 1
+            # SRH should have been popped:
+            #   End SID with PSP and segleft=1 pops SRH
+            # the two IPv6 headers are still present
+            # outer IPv6 header has DA == last segment of popped SRH
+            # SRH should not be present
+            self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+            # outer IPv6 header ip.src should be equal to tx'ed ip.src
+            self.assertEqual(rx_ip.src, tx_ip.src)
+            # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
+            self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
+
+        # UDP layer should be unchanged
+        self.assertEqual(rx_udp, tx_udp)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX6
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX6 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
+        # out: IPv6(B, D)
+        # IPv6:
+        # in: IPv6(A, S3)IPv6(B, D)
+        # out: IPv6(B, D)
+
+        # get first (outer) IPv6 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IPv6)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the hlim field
+        #   -> adjust tx'ed hlim to expected hlim
+        tx_ip2.hlim = tx_ip2.hlim - 1
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX4
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX4 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
+        # out: IPv4(B, D)
+        # IPv6:
+        # in: IPv6(A, S3)IPv4(B, D)
+        # out: IPv4(B, D)
+
+        # get IPv4 header of rx'ed packet
+        rx_ip = rx_pkt.getlayer(IP)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        tx_ip2 = tx_pkt.getlayer(IP)
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_ip pkt should be equal to tx_ip2
+        # except for the ttl field and ip checksum
+        #   -> adjust tx'ed ttl to expected ttl
+        tx_ip2.ttl = tx_ip2.ttl - 1
+        #   -> set tx'ed ip checksum to None and let scapy recompute
+        tx_ip2.chksum = None
+        # read back the pkt (with str()) to force computing these fields
+        # probably other ways to accomplish this are possible
+        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
+
+        self.assertEqual(rx_ip, tx_ip2)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
+        """ Compare input and output packet after passing End.DX2
+
+        :param tx_pkt: transmitted packet
+        :param rx_pkt: received packet
+        """
+        # End.DX2 updates the headers as follows:
+        # IPv6 + SRH (SL=0):
+        # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
+        # out: L2
+        # IPv6:
+        # in: IPv6(A, S3)L2
+        # out: L2
+
+        # get IPv4 header of rx'ed packet
+        rx_eth = rx_pkt.getlayer(Ether)
+
+        tx_ip = tx_pkt.getlayer(IPv6)
+        # we can't just get the 2nd Ether layer
+        # get the Raw content and dissect it as Ether
+        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
+
+        # verify if rx'ed packet has no SRH
+        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+        # the whole rx_eth pkt should be equal to tx_eth1
+        self.assertEqual(rx_eth, tx_eth1)
+
+        self.logger.debug("packet verification: SUCCESS")
+
+    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+                      count):
+        """Create SRv6 input packet stream for defined interface.
+
+        :param VppInterface src_if: Interface to create packet stream for
+        :param VppInterface dst_if: destination interface of packet stream
+        :param packet_header: Layer3 scapy packet headers,
+                L2 is added when not provided,
+                Raw(payload) with packet_info is added
+        :param list packet_sizes: packet stream pckt sizes,sequentially applied
+               to packets in stream have
+        :param int count: number of packets in packet stream
+        :return: list of packets
+        """
+        self.logger.info("Creating packets")
+        pkts = []
+        for i in range(0, count-1):
+            payload_info = self.create_packet_info(src_if, dst_if)
+            self.logger.debug(
+                "Creating packet with index %d" % (payload_info.index))
+            payload = self.info_to_payload(payload_info)
+            # add L2 header if not yet provided in packet_header
+            if packet_header.getlayer(0).name == 'Ethernet':
+                p = (packet_header /
+                     Raw(payload))
+            else:
+                p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+                     packet_header /
+                     Raw(payload))
+            size = packet_sizes[i % len(packet_sizes)]
+            self.logger.debug("Packet size %d" % (size))
+            self.extend_packet(p, size)
+            # we need to store the packet with the automatic fields computed
+            # read back the dumped packet (with str())
+            # to force computing these fields
+            # probably other ways are possible
+            p = Ether(scapy.compat.raw(p))
+            payload_info.data = p.copy()
+            self.logger.debug(ppp("Created packet:", p))
+            pkts.append(p)
+        self.logger.info("Done creating packets")
+        return pkts
+
+    def send_and_verify_pkts(self, input, pkts, output, compare_func):
+        """Send packets and verify received packets using compare_func
+
+        :param input: ingress interface of DUT
+        :param pkts: list of packets to transmit
+        :param output: egress interface of DUT
+        :param compare_func: function to compare in and out packets
+        """
+        # add traffic stream to input interface
+        input.add_stream(pkts)
+
+        # enable capture on all interfaces
+        self.pg_enable_capture(self.pg_interfaces)
+
+        # start traffic
+        self.logger.info("Starting traffic")
+        self.pg_start()
+
+        # get output capture
+        self.logger.info("Getting packet capture")
+        capture = output.get_capture()
+
+        # assert nothing was captured on input interface
+        input.assert_nothing_captured()
+
+        # verify captured packets
+        self.verify_captured_pkts(output, capture, compare_func)
+
+    def create_packet_header_IPv6(self, dst):
+        """Create packet header: IPv6 header, UDP header
+
+        :param dst: IPv6 destination address
+
+        IPv6 source address is 1234::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH(self, sidlist, segleft):
+        """Create packet header: IPv6 header with SRH, UDP header
+
+        :param list sidlist: segment list
+        :param int segleft: segments-left field value
+
+        IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
+        """Create packet header: IPv6 encapsulated in SRv6:
+        IPv6 header with SRH, IPv6 header, UDP header
+
+        :param ipv6address dst: inner IPv6 destination address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=41) /
+             IPv6(src='4321::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
+        """Create packet header: IPv6 encapsulated in IPv6:
+        IPv6 header, IPv6 header, UDP header
+
+        :param ipv6address dst_inner: inner IPv6 destination address
+        :param ipv6address dst_outer: outer IPv6 destination address
+
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst_outer) /
+             IPv6(src='4321::1', dst=dst_inner) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
+                                               sidlist2, segleft2):
+        """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
+        IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
+
+        :param ipv6address dst: inner IPv6 destination address
+        :param list sidlist1: segment list of outer IPv6 SRH
+        :param int segleft1: segments-left field of outer IPv6 SRH
+        :param list sidlist2: segment list of inner IPv6 SRH
+        :param int segleft2: segments-left field of inner IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source addresses are 1234::1 and 4321::1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist1,
+                                      segleft=segleft1, nh=43) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist2,
+                                      segleft=segleft2, nh=41) /
+             IPv6(src='4321::1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv4(self, dst):
+        """Create packet header: IPv4 header, UDP header
+
+        :param dst: IPv4 destination address
+
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IP(src='123.1.1.1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
+        """Create packet header: IPv4 encapsulated in IPv6:
+        IPv6 header, IPv4 header, UDP header
+
+        :param ipv4address dst_inner: inner IPv4 destination address
+        :param ipv6address dst_outer: outer IPv6 destination address
+
+        IPv6 source address is 1234::1
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=dst_outer) /
+             IP(src='123.1.1.1', dst=dst_inner) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
+        """Create packet header: IPv4 encapsulated in SRv6:
+        IPv6 header with SRH, IPv4 header, UDP header
+
+        :param ipv4address dst: inner IPv4 destination address
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        IPv4 source address is 123.1.1.1
+        UDP source port and destination port are 1234
+        """
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=4) /
+             IP(src='123.1.1.1', dst=dst) /
+             UDP(sport=1234, dport=1234))
+        return p
+
+    def create_packet_header_L2(self, vlan=0):
+        """Create packet header: L2 header
+
+        :param vlan: if vlan!=0 then add 802.1q header
+        """
+        # Note: the dst addr ('00:55:44:33:22:11') is used in
+        # the compare function compare_rx_tx_packet_T_Encaps_L2
+        # to detect presence of L2 in SRH payload
+        p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            p /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            p.type = etype
+        return p
+
+    def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
+        """Create packet header: L2 encapsulated in SRv6:
+        IPv6 header with SRH, L2
+
+        :param list sidlist: segment list of outer IPv6 SRH
+        :param int segleft: segments-left field of outer IPv6 SRH
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+
+        Outer IPv6 destination address is set to sidlist[segleft]
+        IPv6 source address is 1234::1
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+             IPv6ExtHdrSegmentRouting(addresses=sidlist,
+                                      segleft=segleft, nh=59) /
+             eth)
+        return p
+
+    def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
+        """Create packet header: L2 encapsulated in IPv6:
+        IPv6 header, L2
+
+        :param ipv6address dst_outer: outer IPv6 destination address
+        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+        """
+        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+        etype = 0x8137  # IPX
+        if vlan:
+            # add 802.1q layer
+            eth /= Dot1Q(vlan=vlan, type=etype)
+        else:
+            eth.type = etype
+
+        p = (IPv6(src='1234::1', dst=dst_outer, nh=59) / eth)
+        return p
+
+    def get_payload_info(self, packet):
+        """ Extract the payload_info from the packet
+        """
+        # in most cases, payload_info is in packet[Raw]
+        # but packet[Raw] gives the complete payload
+        # (incl L2 header) for the T.Encaps L2 case
+        try:
+            payload_info = self.payload_to_info(packet[Raw])
+
+        except:
+            # remote L2 header from packet[Raw]:
+            # take packet[Raw], convert it to an Ether layer
+            # and then extract Raw from it
+            payload_info = self.payload_to_info(
+                Ether(scapy.compat.r(packet[Raw]))[Raw])
+
+        return payload_info
+
+    def verify_captured_pkts(self, dst_if, capture, compare_func):
+        """
+        Verify captured packet stream for specified interface.
+        Compare ingress with egress packets using the specified compare fn
+
+        :param dst_if: egress interface of DUT
+        :param capture: captured packets
+        :param compare_func: function to compare in and out packet
+        """
+        self.logger.info("Verifying capture on interface %s using function %s"
+                         % (dst_if.name, compare_func.__name__))
+
+        last_info = dict()
+        for i in self.pg_interfaces:
+            last_info[i.sw_if_index] = None
+        dst_sw_if_index = dst_if.sw_if_index
+
+        for packet in capture:
+            try:
+                # extract payload_info from packet's payload
+                payload_info = self.get_payload_info(packet)
+                packet_index = payload_info.index
+
+                self.logger.debug("Verifying packet with index %d"
+                                  % (packet_index))
+                # packet should have arrived on the expected interface
+                self.assertEqual(payload_info.dst, dst_sw_if_index)
+                self.logger.debug(
+                    "Got packet on interface %s: src=%u (idx=%u)" %
+                    (dst_if.name, payload_info.src, packet_index))
+
+                # search for payload_info with same src and dst if_index
+                # this will give us the transmitted packet
+                next_info = self.get_next_packet_info_for_interface2(
+                    payload_info.src, dst_sw_if_index,
+                    last_info[payload_info.src])
+                last_info[payload_info.src] = next_info
+                # next_info should not be None
+                self.assertTrue(next_info is not None)
+                # index of tx and rx packets should be equal
+                self.assertEqual(packet_index, next_info.index)
+                # data field of next_info contains the tx packet
+                txed_packet = next_info.data
+
+                self.logger.debug(ppp("Transmitted packet:",
+                                      txed_packet))  # ppp=Pretty Print Packet
+
+                self.logger.debug(ppp("Received packet:", packet))
+
+                # compare rcvd packet with expected packet using compare_func
+                compare_func(txed_packet, packet)
+
+            except:
+                self.logger.error(ppp("Unexpected or invalid packet:", packet))
+                raise
+
+        # have all expected packets arrived?
+        for i in self.pg_interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(
+                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+            self.assertTrue(remaining_packet is None,
+                            "Interface %s: Packet expected from interface %s "
+                            "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/src/plugins/srv6-am/test/vpp_srv6.py b/src/plugins/srv6-am/test/vpp_srv6.py
new file mode 120000
index 00000000000..78f756605fc
--- /dev/null
+++ b/src/plugins/srv6-am/test/vpp_srv6.py
@@ -0,0 +1 @@
+../../srv6-ad/test/vpp_srv6.py
\ No newline at end of file