6 from framework import VppTestCase, VppTestRunner
8 from scapy.layers.l2 import Ether, getmacbyip
9 from scapy.layers.inet import IP, UDP, ICMP
10 from scapy.layers.inet6 import IPv6, in6_getnsmac, in6_mactoifaceid
11 from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
12 from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
13 DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
14 DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr
15 from socket import AF_INET, AF_INET6
16 from scapy.utils import inet_pton, inet_ntop
17 from scapy.utils6 import in6_ptop
19 DHCP4_CLIENT_PORT = 68
20 DHCP4_SERVER_PORT = 67
21 DHCP6_CLIENT_PORT = 547
22 DHCP6_SERVER_PORT = 546
27 euid = in6_mactoifaceid(mac)
28 addr = "fe80::" + euid
32 class TestDHCP(VppTestCase):
33 """ DHCP Test Case """
36 super(TestDHCP, self).setUp()
38 # create 3 pg interfaces
39 self.create_pg_interfaces(range(4))
41 # pg0 and 1 are IP configured in VRF 0 and 1.
42 # pg2 and 3 are non IP-configured in VRF 0 and 1
44 for i in self.pg_interfaces[:2]:
46 i.set_table_ip4(table_id)
47 i.set_table_ip6(table_id)
55 for i in self.pg_interfaces[2:]:
57 i.set_table_ip4(table_id)
58 i.set_table_ip6(table_id)
62 super(TestDHCP, self).tearDown()
63 for i in self.pg_interfaces:
68 def send_and_assert_no_replies(self, intf, pkts, remark):
70 self.pg_enable_capture(self.pg_interfaces)
72 for i in self.pg_interfaces:
73 i.assert_nothing_captured(remark=remark)
75 def validate_relay_options(self, pkt, intf, ip_addr, fib_id, oui):
80 for i in dhcp.options:
82 if i[0] == "relay_agent_Information":
84 # There are two sb-options present - each of length 6.
88 self.assertEqual(len(data), 24)
90 self.assertEqual(len(data), 12)
93 # First sub-option is ID 1, len 4, then encoded
94 # sw_if_index. This test uses low valued indicies
96 # The ID space is VPP internal - so no matching value
99 self.assertEqual(ord(data[0]), 1)
100 self.assertEqual(ord(data[1]), 4)
101 self.assertEqual(ord(data[2]), 0)
102 self.assertEqual(ord(data[3]), 0)
103 self.assertEqual(ord(data[4]), 0)
104 self.assertEqual(ord(data[5]), intf._sw_if_index)
107 # next sub-option is the IP address of the client side
109 # sub-option ID=5, length (of a v4 address)=4
111 claddr = socket.inet_pton(AF_INET, ip_addr)
113 self.assertEqual(ord(data[6]), 5)
114 self.assertEqual(ord(data[7]), 4)
115 self.assertEqual(data[8], claddr[0])
116 self.assertEqual(data[9], claddr[1])
117 self.assertEqual(data[10], claddr[2])
118 self.assertEqual(data[11], claddr[3])
121 # sub-option 151 encodes the 3 byte oui
122 # and the 4 byte fib_id
123 self.assertEqual(ord(data[12]), 151)
124 self.assertEqual(ord(data[13]), 8)
125 self.assertEqual(ord(data[14]), 1)
126 self.assertEqual(ord(data[15]), 0)
127 self.assertEqual(ord(data[16]), 0)
128 self.assertEqual(ord(data[17]), oui)
129 self.assertEqual(ord(data[18]), 0)
130 self.assertEqual(ord(data[19]), 0)
131 self.assertEqual(ord(data[20]), 0)
132 self.assertEqual(ord(data[21]), fib_id)
134 # VSS control sub-option
135 self.assertEqual(ord(data[22]), 152)
136 self.assertEqual(ord(data[23]), 0)
139 self.assertTrue(found)
143 def verify_dhcp_offer(self, pkt, intf):
145 self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
146 self.assertEqual(ether.src, intf.local_mac)
149 self.assertEqual(ip.dst, "255.255.255.255")
150 self.assertEqual(ip.src, intf.local_ip4)
153 self.assertEqual(udp.dport, DHCP4_CLIENT_PORT)
154 self.assertEqual(udp.sport, DHCP4_SERVER_PORT)
158 for o in dhcp.options:
160 if o[0] == "message-type" \
161 and DHCPTypes[o[1]] == "offer":
163 self.assertTrue(is_offer)
165 data = self.validate_relay_options(pkt, intf, intf.local_ip4, 0, 0)
167 def verify_dhcp_discover(self, pkt, intf, src_intf=None, fib_id=0, oui=0):
169 self.assertEqual(ether.dst, intf.remote_mac)
170 self.assertEqual(ether.src, intf.local_mac)
173 self.assertEqual(ip.dst, intf.remote_ip4)
174 self.assertEqual(ip.src, intf.local_ip4)
177 self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
178 self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
183 for o in dhcp.options:
185 if o[0] == "message-type" \
186 and DHCPTypes[o[1]] == "discover":
188 self.assertTrue(is_discover)
190 data = self.validate_relay_options(pkt, src_intf,
195 def verify_dhcp6_solicit(self, pkt, intf,
200 self.assertEqual(ether.dst, intf.remote_mac)
201 self.assertEqual(ether.src, intf.local_mac)
204 self.assertEqual(in6_ptop(ip.dst), in6_ptop(intf.remote_ip6))
205 self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
208 self.assertEqual(udp.dport, DHCP6_CLIENT_PORT)
209 self.assertEqual(udp.sport, DHCP6_SERVER_PORT)
211 relay = pkt[DHCP6_RelayForward]
212 self.assertEqual(in6_ptop(relay.peeraddr), in6_ptop(peer_ip))
213 oid = pkt[DHCP6OptIfaceId]
214 cll = pkt[DHCP6OptClientLinkLayerAddr]
215 self.assertEqual(cll.optlen, 8)
216 self.assertEqual(cll.lltype, 1)
217 self.assertEqual(cll.clladdr, peer_mac)
220 vss = pkt[DHCP6OptVSS]
221 self.assertEqual(vss.optlen, 8)
222 self.assertEqual(vss.type, 1)
223 # the OUI and FIB-id are really 3 and 4 bytes resp.
224 # but the tested range is small
225 self.assertEqual(ord(vss.data[0]), 0)
226 self.assertEqual(ord(vss.data[1]), 0)
227 self.assertEqual(ord(vss.data[2]), oui)
228 self.assertEqual(ord(vss.data[3]), 0)
229 self.assertEqual(ord(vss.data[4]), 0)
230 self.assertEqual(ord(vss.data[5]), 0)
231 self.assertEqual(ord(vss.data[6]), fib_id)
233 # the relay message should be an encoded Solicit
234 msg = pkt[DHCP6OptRelayMsg]
235 sol = DHCP6_Solicit()
236 self.assertEqual(msg.optlen, len(str(sol)))
237 self.assertEqual(str(sol), (str(msg[1]))[:msg.optlen])
239 def verify_dhcp6_advert(self, pkt, intf, peer):
241 self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
242 self.assertEqual(ether.src, intf.local_mac)
245 self.assertEqual(in6_ptop(ip.dst), in6_ptop(peer))
246 self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
249 self.assertEqual(udp.dport, DHCP6_SERVER_PORT)
250 self.assertEqual(udp.sport, DHCP6_CLIENT_PORT)
252 # not sure why this is not decoding
253 # adv = pkt[DHCP6_Advertise]
255 def test_dhcp_proxy(self):
259 # Verify no response to DHCP request without DHCP config
261 p_disc_vrf0 = (Ether(dst="ff:ff:ff:ff:ff:ff",
262 src=self.pg2.remote_mac) /
263 IP(src="0.0.0.0", dst="255.255.255.255") /
264 UDP(sport=DHCP4_CLIENT_PORT,
265 dport=DHCP4_SERVER_PORT) /
267 DHCP(options=[('message-type', 'discover'), ('end')]))
268 pkts_disc_vrf0 = [p_disc_vrf0]
269 p_disc_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
270 src=self.pg3.remote_mac) /
271 IP(src="0.0.0.0", dst="255.255.255.255") /
272 UDP(sport=DHCP4_CLIENT_PORT,
273 dport=DHCP4_SERVER_PORT) /
275 DHCP(options=[('message-type', 'discover'), ('end')]))
276 pkts_disc_vrf1 = [p_disc_vrf0]
278 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
279 "DHCP with no configuration")
280 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
281 "DHCP with no configuration")
284 # Enable DHCP proxy in VRF 0
286 server_addr = self.pg0.remote_ip4n
287 src_addr = self.pg0.local_ip4n
289 self.vapi.dhcp_proxy_config(server_addr,
294 # Discover packets from the client are dropped because there is no
295 # IP address configured on the client facing interface
297 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
298 "Discover DHCP no relay address")
301 # Inject a response from the server
302 # dropped, because there is no IP addrees on the
303 # client interfce to fill in the option.
305 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
306 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
307 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
309 DHCP(options=[('message-type', 'offer'), ('end')]))
312 self.send_and_assert_no_replies(self.pg2, pkts,
313 "Offer DHCP no relay address")
316 # configure an IP address on the client facing interface
318 self.pg2.config_ip4()
321 # Try again with a discover packet
322 # Rx'd packet should be to the server address and from the configured
324 # UDP source ports are unchanged
325 # we've no option 82 config so that should be absent
327 self.pg2.add_stream(pkts_disc_vrf0)
328 self.pg_enable_capture(self.pg_interfaces)
331 rx = self.pg0.get_capture(1)
334 option_82 = self.verify_dhcp_discover(rx, self.pg0, src_intf=self.pg2)
337 # Create an DHCP offer reply from the server with a correctly formatted
338 # option 82. i.e. send back what we just captured
339 # The offer, sent mcast to the client, still has option 82.
341 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
342 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
343 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
345 DHCP(options=[('message-type', 'offer'),
346 ('relay_agent_Information', option_82),
350 self.pg0.add_stream(pkts)
351 self.pg_enable_capture(self.pg_interfaces)
354 rx = self.pg2.get_capture(1)
357 self.verify_dhcp_offer(rx, self.pg2)
362 # 1. not our IP address = not checked by VPP? so offer is replayed
364 bad_ip = option_82[0:8] + chr(33) + option_82[9:]
366 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
367 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
368 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
370 DHCP(options=[('message-type', 'offer'),
371 ('relay_agent_Information', bad_ip),
374 self.send_and_assert_no_replies(self.pg0, pkts,
375 "DHCP offer option 82 bad address")
377 # 2. Not a sw_if_index VPP knows
378 bad_if_index = option_82[0:2] + chr(33) + option_82[3:]
380 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
381 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
382 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
384 DHCP(options=[('message-type', 'offer'),
385 ('relay_agent_Information', bad_if_index),
388 self.send_and_assert_no_replies(self.pg0, pkts,
389 "DHCP offer option 82 bad if index")
392 # Send a DHCP request in VRF 1. should be dropped.
394 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
395 "DHCP with no configuration VRF 1")
398 # Delete the DHCP config in VRF 0
399 # Should now drop requests.
401 self.vapi.dhcp_proxy_config(server_addr,
406 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
407 "DHCP config removed VRF 0")
408 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
409 "DHCP config removed VRF 1")
412 # Add DHCP config for VRF 1
414 server_addr = self.pg1.remote_ip4n
415 src_addr = self.pg1.local_ip4n
416 self.vapi.dhcp_proxy_config(server_addr,
422 # Confim DHCP requests ok in VRF 1.
423 # - dropped on IP config on client interface
425 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
426 "DHCP config removed VRF 1")
429 # configure an IP address on the client facing interface
431 self.pg3.config_ip4()
433 self.pg3.add_stream(pkts_disc_vrf1)
434 self.pg_enable_capture(self.pg_interfaces)
437 rx = self.pg1.get_capture(1)
439 self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
443 # table=1, fib=id=1, oui=4
444 self.vapi.dhcp_proxy_set_vss(1, 1, 4)
446 self.pg3.add_stream(pkts_disc_vrf1)
447 self.pg_enable_capture(self.pg_interfaces)
450 rx = self.pg1.get_capture(1)
452 self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
456 # Remove the VSS config
457 # relayed DHCP has default vlaues in the option.
459 self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_add=0)
461 self.pg3.add_stream(pkts_disc_vrf1)
462 self.pg_enable_capture(self.pg_interfaces)
465 rx = self.pg1.get_capture(1)
467 self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
470 # remove DHCP config to cleanup
472 self.vapi.dhcp_proxy_config(server_addr,
478 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
479 "DHCP cleanup VRF 0")
480 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
481 "DHCP cleanup VRF 1")
483 def test_dhcp6_proxy(self):
486 # Verify no response to DHCP request without DHCP config
488 dhcp_solicit_dst = "ff02::1:2"
489 dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg2.remote_mac)
490 dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg3.remote_mac)
491 server_addr_vrf0 = self.pg0.remote_ip6n
492 src_addr_vrf0 = self.pg0.local_ip6n
493 server_addr_vrf1 = self.pg1.remote_ip6n
494 src_addr_vrf1 = self.pg1.local_ip6n
496 dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
497 p_solicit_vrf0 = (Ether(dst=dmac, src=self.pg2.remote_mac) /
498 IPv6(src=dhcp_solicit_src_vrf0,
499 dst=dhcp_solicit_dst) /
500 UDP(sport=DHCP6_SERVER_PORT,
501 dport=DHCP6_CLIENT_PORT) /
503 pkts_solicit_vrf0 = [p_solicit_vrf0]
504 p_solicit_vrf1 = (Ether(dst=dmac, src=self.pg3.remote_mac) /
505 IPv6(src=dhcp_solicit_src_vrf1,
506 dst=dhcp_solicit_dst) /
507 UDP(sport=DHCP6_SERVER_PORT,
508 dport=DHCP6_CLIENT_PORT) /
510 pkts_solicit_vrf1 = [p_solicit_vrf1]
512 self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
513 "DHCP with no configuration")
514 self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
515 "DHCP with no configuration")
518 # DHCPv6 config in VRF 0.
519 # Packets still dropped because the client facing interface has no
522 self.vapi.dhcp_proxy_config(server_addr_vrf0,
528 self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
529 "DHCP with no configuration")
530 self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
531 "DHCP with no configuration")
534 # configure an IP address on the client facing interface
536 self.pg2.config_ip6()
539 # Now the DHCP requests are relayed to the server
541 self.pg2.add_stream(pkts_solicit_vrf0)
542 self.pg_enable_capture(self.pg_interfaces)
545 rx = self.pg0.get_capture(1)
547 self.verify_dhcp6_solicit(rx, self.pg0,
548 dhcp_solicit_src_vrf0,
552 # Exception cases for rejected relay responses
555 # 1 - not a relay reply
556 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
557 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
558 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
560 pkts_adv_vrf0 = [p_adv_vrf0]
561 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
562 "DHCP6 not a relay reply")
564 # 2 - no relay message option
565 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
566 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
567 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
570 pkts_adv_vrf0 = [p_adv_vrf0]
571 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
572 "DHCP not a relay message")
575 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
576 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
577 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
579 DHCP6OptRelayMsg(optlen=0) /
581 pkts_adv_vrf0 = [p_adv_vrf0]
582 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
583 "DHCP6 no circuit ID")
584 # 4 - wrong circuit ID
585 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
586 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
587 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
589 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
590 DHCP6OptRelayMsg(optlen=0) /
592 pkts_adv_vrf0 = [p_adv_vrf0]
593 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
594 "DHCP6 wrong circuit ID")
597 # Send the relay response (the advertisement)
599 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
600 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
601 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
603 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
604 DHCP6OptRelayMsg(optlen=0) /
605 DHCP6_Advertise(trid=1) /
606 DHCP6OptStatusCode(statuscode=0))
607 pkts_adv_vrf0 = [p_adv_vrf0]
609 self.pg0.add_stream(pkts_adv_vrf0)
610 self.pg_enable_capture(self.pg_interfaces)
613 rx = self.pg2.get_capture(1)
615 self.verify_dhcp6_advert(rx, self.pg2, "::")
618 # Send the relay response (the advertisement)
619 # - with peer address
620 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
621 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
622 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
623 DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf0) /
624 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
625 DHCP6OptRelayMsg(optlen=0) /
626 DHCP6_Advertise(trid=1) /
627 DHCP6OptStatusCode(statuscode=0))
628 pkts_adv_vrf0 = [p_adv_vrf0]
630 self.pg0.add_stream(pkts_adv_vrf0)
631 self.pg_enable_capture(self.pg_interfaces)
634 rx = self.pg2.get_capture(1)
636 self.verify_dhcp6_advert(rx, self.pg2, dhcp_solicit_src_vrf0)
639 # Add all the config for VRF 1
641 self.vapi.dhcp_proxy_config(server_addr_vrf1,
646 self.pg3.config_ip6()
651 self.pg3.add_stream(pkts_solicit_vrf1)
652 self.pg_enable_capture(self.pg_interfaces)
655 rx = self.pg1.get_capture(1)
657 self.verify_dhcp6_solicit(rx, self.pg1,
658 dhcp_solicit_src_vrf1,
664 p_adv_vrf1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
665 IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
666 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
667 DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
668 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
669 DHCP6OptRelayMsg(optlen=0) /
670 DHCP6_Advertise(trid=1) /
671 DHCP6OptStatusCode(statuscode=0))
672 pkts_adv_vrf1 = [p_adv_vrf1]
674 self.pg1.add_stream(pkts_adv_vrf1)
675 self.pg_enable_capture(self.pg_interfaces)
678 rx = self.pg3.get_capture(1)
680 self.verify_dhcp6_advert(rx, self.pg3, dhcp_solicit_src_vrf1)
684 # table=1, fib=id=1, oui=4
685 self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1)
687 self.pg3.add_stream(pkts_solicit_vrf1)
688 self.pg_enable_capture(self.pg_interfaces)
691 rx = self.pg1.get_capture(1)
693 self.verify_dhcp6_solicit(rx, self.pg1,
694 dhcp_solicit_src_vrf1,
700 # Remove the VSS config
701 # relayed DHCP has default vlaues in the option.
703 self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1, is_add=0)
705 self.pg3.add_stream(pkts_solicit_vrf1)
706 self.pg_enable_capture(self.pg_interfaces)
709 rx = self.pg1.get_capture(1)
711 self.verify_dhcp6_solicit(rx, self.pg1,
712 dhcp_solicit_src_vrf1,
718 self.vapi.dhcp_proxy_config(server_addr_vrf1,
724 self.vapi.dhcp_proxy_config(server_addr_vrf1,
731 if __name__ == '__main__':
732 unittest.main(testRunner=VppTestRunner)