import unittest
import socket
+import struct
from framework import VppTestCase, VppTestRunner
+from vpp_neighbor import VppNeighbor
+from util import mk_ll_addr
from scapy.layers.l2 import Ether, getmacbyip
from scapy.layers.inet import IP, UDP, ICMP
from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
- DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr
+ DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr, DHCP6_Request
from socket import AF_INET, AF_INET6
from scapy.utils import inet_pton, inet_ntop
from scapy.utils6 import in6_ptop
DHCP6_SERVER_PORT = 546
-def mk_ll_addr(mac):
-
- euid = in6_mactoifaceid(mac)
- addr = "fe80::" + euid
- return addr
-
-
class TestDHCP(VppTestCase):
""" DHCP Test Case """
i.set_table_ip6(table_id)
table_id += 1
+ def tearDown(self):
+ super(TestDHCP, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+ i.admin_down()
+
def send_and_assert_no_replies(self, intf, pkts, remark):
intf.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
for i in self.pg_interfaces:
i.assert_nothing_captured(remark=remark)
- def validate_option_82(self, pkt, intf, ip_addr):
+ def validate_relay_options(self, pkt, intf, ip_addr, fib_id, oui):
dhcp = pkt[DHCP]
found = 0
data = []
# There are two sb-options present - each of length 6.
#
data = i[1]
- self.assertEqual(len(data), 12)
+ if oui != 0:
+ self.assertEqual(len(data), 24)
+ else:
+ self.assertEqual(len(data), 12)
#
# First sub-option is ID 1, len 4, then encoded
self.assertEqual(data[10], claddr[2])
self.assertEqual(data[11], claddr[3])
+ if oui != 0:
+ # sub-option 151 encodes the 3 byte oui
+ # and the 4 byte fib_id
+ self.assertEqual(ord(data[12]), 151)
+ self.assertEqual(ord(data[13]), 8)
+ self.assertEqual(ord(data[14]), 1)
+ self.assertEqual(ord(data[15]), 0)
+ self.assertEqual(ord(data[16]), 0)
+ self.assertEqual(ord(data[17]), oui)
+ self.assertEqual(ord(data[18]), 0)
+ self.assertEqual(ord(data[19]), 0)
+ self.assertEqual(ord(data[20]), 0)
+ self.assertEqual(ord(data[21]), fib_id)
+
+ # VSS control sub-option
+ self.assertEqual(ord(data[22]), 152)
+ self.assertEqual(ord(data[23]), 0)
+
found = 1
self.assertTrue(found)
return data
- def verify_dhcp_offer(self, pkt, intf, check_option_82=True):
+ def verify_dhcp_offer(self, pkt, intf, fib_id=0, oui=0):
ether = pkt[Ether]
self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
self.assertEqual(ether.src, intf.local_mac)
is_offer = True
self.assertTrue(is_offer)
- if check_option_82:
- data = self.validate_option_82(pkt, intf, intf.local_ip4)
+ data = self.validate_relay_options(pkt, intf, intf.local_ip4,
+ fib_id, oui)
+
+ def verify_dhcp_discover(self, pkt, intf, src_intf=None, fib_id=0, oui=0,
+ dst_mac=None, dst_ip=None):
+ if not dst_mac:
+ dst_mac = intf.remote_mac
+ if not dst_ip:
+ dst_ip = intf.remote_ip4
- def verify_dhcp_discover(self, pkt, intf, src_intf=None,
- option_82_present=True):
ether = pkt[Ether]
- self.assertEqual(ether.dst, intf.remote_mac)
+ self.assertEqual(ether.dst, dst_mac)
self.assertEqual(ether.src, intf.local_mac)
ip = pkt[IP]
- self.assertEqual(ip.dst, intf.remote_ip4)
+ self.assertEqual(ip.dst, dst_ip)
self.assertEqual(ip.src, intf.local_ip4)
udp = pkt[UDP]
is_discover = True
self.assertTrue(is_discover)
- if option_82_present:
- data = self.validate_option_82(pkt, src_intf, src_intf.local_ip4)
- return data
- else:
- for i in dhcp.options:
- if type(i) is tuple:
- self.assertNotEqual(i[0], "relay_agent_Information")
+ data = self.validate_relay_options(pkt, src_intf,
+ src_intf.local_ip4,
+ fib_id, oui)
+ return data
def verify_dhcp6_solicit(self, pkt, intf,
peer_ip, peer_mac,
fib_id=0,
- oui=0):
+ oui=0,
+ dst_mac=None,
+ dst_ip=None):
+ if not dst_mac:
+ dst_mac = intf.remote_mac
+ if not dst_ip:
+ dst_ip = in6_ptop(intf.remote_ip6)
+
ether = pkt[Ether]
- self.assertEqual(ether.dst, intf.remote_mac)
+ self.assertEqual(ether.dst, dst_mac)
self.assertEqual(ether.src, intf.local_mac)
ip = pkt[IPv6]
- self.assertEqual(in6_ptop(ip.dst), in6_ptop(intf.remote_ip6))
+ self.assertEqual(in6_ptop(ip.dst), dst_ip)
self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
udp = pkt[UDP]
self.assertEqual(cll.lltype, 1)
self.assertEqual(cll.clladdr, peer_mac)
- vss = pkt[DHCP6OptVSS]
- self.assertEqual(vss.optlen, 8)
- self.assertEqual(vss.type, 1)
- # the OUI and FIB-id are really 3 and 4 bytes resp.
- # but the tested range is small
- self.assertEqual(ord(vss.data[0]), 0)
- self.assertEqual(ord(vss.data[1]), 0)
- self.assertEqual(ord(vss.data[2]), oui)
- self.assertEqual(ord(vss.data[3]), 0)
- self.assertEqual(ord(vss.data[4]), 0)
- self.assertEqual(ord(vss.data[5]), 0)
- self.assertEqual(ord(vss.data[6]), fib_id)
+ if fib_id != 0:
+ vss = pkt[DHCP6OptVSS]
+ self.assertEqual(vss.optlen, 8)
+ self.assertEqual(vss.type, 1)
+ # the OUI and FIB-id are really 3 and 4 bytes resp.
+ # but the tested range is small
+ self.assertEqual(ord(vss.data[0]), 0)
+ self.assertEqual(ord(vss.data[1]), 0)
+ self.assertEqual(ord(vss.data[2]), oui)
+ self.assertEqual(ord(vss.data[3]), 0)
+ self.assertEqual(ord(vss.data[4]), 0)
+ self.assertEqual(ord(vss.data[5]), 0)
+ self.assertEqual(ord(vss.data[6]), fib_id)
# the relay message should be an encoded Solicit
msg = pkt[DHCP6OptRelayMsg]
rx_table_id=0)
#
- # Now a DHCP request on pg2, which is in the same VRF
- # as the DHCP config, will result in a relayed DHCP
- # message to the [fake] server
- #
- self.pg2.add_stream(pkts_disc_vrf0)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- rx = self.pg0.get_capture(1)
- rx = rx[0]
-
- #
- # Rx'd packet should be to the server address and from the configured
- # source address
- # UDP source ports are unchanged
- # we've no option 82 config so that should be absent
+ # Discover packets from the client are dropped because there is no
+ # IP address configured on the client facing interface
#
- self.verify_dhcp_discover(rx, self.pg0, option_82_present=False)
+ self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
+ "Discover DHCP no relay address")
#
# Inject a response from the server
- # VPP will only relay the offer if option 82 is present.
- # so this one is dropped
+ # dropped, because there is no IP addrees on the
+ # client interfce to fill in the option.
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
DHCP(options=[('message-type', 'offer'), ('end')]))
pkts = [p]
- self.send_and_assert_no_replies(self.pg0, pkts,
- "DHCP offer no option 82")
-
- #
- # Configure sending option 82 in relayed messages
- #
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=0,
- insert_circuit_id=1)
-
- #
- # Send a request:
- # again dropped, but ths time because there is no IP addrees on the
- # clinet interfce to fill in the option.
- #
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "DHCP no relay address")
+ self.send_and_assert_no_replies(self.pg2, pkts,
+ "Offer DHCP no relay address")
#
# configure an IP address on the client facing interface
('relay_agent_Information', bad_ip),
('end')]))
pkts = [p]
-
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- rx = self.pg2.get_capture(1)
- rx = rx[0]
-
- self.verify_dhcp_offer(rx, self.pg2, check_option_82=False)
- self.pg0.assert_nothing_captured(remark="")
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "DHCP offer option 82 bad address")
# 2. Not a sw_if_index VPP knows
bad_if_index = option_82[0:2] + chr(33) + option_82[3:]
self.vapi.dhcp_proxy_config(server_addr,
src_addr,
rx_table_id=0,
- is_add=0,
- insert_circuit_id=1)
+ is_add=0)
self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
"DHCP config removed VRF 0")
self.vapi.dhcp_proxy_config(server_addr,
src_addr,
rx_table_id=1,
- server_table_id=1,
- insert_circuit_id=1)
+ server_table_id=1)
#
# Confim DHCP requests ok in VRF 1.
rx = rx[0]
self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+ #
+ # Add VSS config
+ # table=1, fib=id=1, oui=4
+ self.vapi.dhcp_proxy_set_vss(1, 1, 4)
+
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+ self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
+ fib_id=1, oui=4)
+
+ #
+ # Add a second DHCP server in VRF 1
+ # expect clients messages to be relay to both configured servers
+ #
+ self.pg1.generate_remote_hosts(2)
+ server_addr2 = socket.inet_pton(AF_INET, self.pg1.remote_hosts[1].ip4)
+
+ self.vapi.dhcp_proxy_config(server_addr2,
+ src_addr,
+ rx_table_id=1,
+ server_table_id=1,
+ is_add=1)
+
+ #
+ # We'll need an ARP entry for the server to send it packets
+ #
+ arp_entry = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip4)
+ arp_entry.add_vpp_config()
+
+ #
+ # Send a discover from the client. expect two relayed messages
+ # The frist packet is sent to the second server
+ # We're not enforcing that here, it's just the way it is.
+ #
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(2)
+
+ option_82 = self.verify_dhcp_discover(
+ rx[0], self.pg1,
+ src_intf=self.pg3,
+ dst_mac=self.pg1.remote_hosts[1].mac,
+ dst_ip=self.pg1.remote_hosts[1].ip4,
+ fib_id=1, oui=4)
+ self.verify_dhcp_discover(rx[1], self.pg1, src_intf=self.pg3,
+ fib_id=1, oui=4)
+
+ #
+ # Send both packets back. Client gets both.
+ #
+ p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) /
+ UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+ BOOTP(op=1) /
+ DHCP(options=[('message-type', 'offer'),
+ ('relay_agent_Information', option_82),
+ ('end')]))
+ p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_hosts[1].ip4, dst=self.pg1.local_ip4) /
+ UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+ BOOTP(op=1) /
+ DHCP(options=[('message-type', 'offer'),
+ ('relay_agent_Information', option_82),
+ ('end')]))
+ pkts = [p1, p2]
+
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(2)
+
+ self.verify_dhcp_offer(rx[0], self.pg3, fib_id=1, oui=4)
+ self.verify_dhcp_offer(rx[1], self.pg3, fib_id=1, oui=4)
+
+ #
+ # Ensure offers from non-servers are dropeed
+ #
+ p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src="8.8.8.8", dst=self.pg1.local_ip4) /
+ UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
+ BOOTP(op=1) /
+ DHCP(options=[('message-type', 'offer'),
+ ('relay_agent_Information', option_82),
+ ('end')]))
+ self.send_and_assert_no_replies(self.pg1, p2,
+ "DHCP offer from non-server")
+
+ #
+ # Ensure only the discover is sent to multiple servers
+ #
+ p_req_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+ src=self.pg3.remote_mac) /
+ IP(src="0.0.0.0", dst="255.255.255.255") /
+ UDP(sport=DHCP4_CLIENT_PORT,
+ dport=DHCP4_SERVER_PORT) /
+ BOOTP(op=1) /
+ DHCP(options=[('message-type', 'request'),
+ ('end')]))
+
+ self.pg3.add_stream(p_req_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+
+ #
+ # Remove the second DHCP server
+ #
+ self.vapi.dhcp_proxy_config(server_addr2,
+ src_addr,
+ rx_table_id=1,
+ server_table_id=1,
+ is_add=0)
+
+ #
+ # Test we can still relay with the first
+ #
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+ self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
+ fib_id=1, oui=4)
+
+ #
+ # Remove the VSS config
+ # relayed DHCP has default vlaues in the option.
+ #
+ self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_add=0)
+
+ self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+ self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+
#
# remove DHCP config to cleanup
#
src_addr,
rx_table_id=1,
server_table_id=1,
- insert_circuit_id=1,
is_add=0)
self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
UDP(sport=DHCP6_SERVER_PORT,
dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
- pkts_solicit_vrf0 = [p_solicit_vrf0]
p_solicit_vrf1 = (Ether(dst=dmac, src=self.pg3.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf1,
dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT,
dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
- pkts_solicit_vrf1 = [p_solicit_vrf1]
- self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_solicit_vrf0,
"DHCP with no configuration")
- self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
+ self.send_and_assert_no_replies(self.pg3, p_solicit_vrf1,
"DHCP with no configuration")
#
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
- insert_circuit_id=1,
is_ipv6=1)
- self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_solicit_vrf0,
"DHCP with no configuration")
- self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
+ self.send_and_assert_no_replies(self.pg3, p_solicit_vrf1,
"DHCP with no configuration")
#
#
# Now the DHCP requests are relayed to the server
#
- self.pg2.add_stream(pkts_solicit_vrf0)
+ self.pg2.add_stream(p_solicit_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_solicit(rx, self.pg0,
+
+ self.verify_dhcp6_solicit(rx[0], self.pg0,
dhcp_solicit_src_vrf0,
self.pg2.remote_mac)
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_Advertise())
- pkts_adv_vrf0 = [p_adv_vrf0]
- self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 not a relay reply")
# 2 - no relay message option
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() /
DHCP6_Advertise())
- pkts_adv_vrf0 = [p_adv_vrf0]
- self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP not a relay message")
# 3 - no circuit ID
DHCP6_RelayReply() /
DHCP6OptRelayMsg(optlen=0) /
DHCP6_Advertise())
- pkts_adv_vrf0 = [p_adv_vrf0]
- self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 no circuit ID")
# 4 - wrong circuit ID
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
DHCP6OptRelayMsg(optlen=0) /
DHCP6_Advertise())
- pkts_adv_vrf0 = [p_adv_vrf0]
- self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
+ self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 wrong circuit ID")
#
self.pg_start()
rx = self.pg2.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_advert(rx, self.pg2, "::")
+
+ self.verify_dhcp6_advert(rx[0], self.pg2, "::")
#
# Send the relay response (the advertisement)
self.pg_start()
rx = self.pg2.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_advert(rx, self.pg2, dhcp_solicit_src_vrf0)
+
+ self.verify_dhcp6_advert(rx[0], self.pg2, dhcp_solicit_src_vrf0)
#
# Add all the config for VRF 1
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
- insert_circuit_id=1,
is_ipv6=1)
self.pg3.config_ip6()
#
# VRF 1 solicit
#
- self.pg3.add_stream(pkts_solicit_vrf1)
+ self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_solicit(rx, self.pg1,
+
+ self.verify_dhcp6_solicit(rx[0], self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
self.pg_start()
rx = self.pg3.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_advert(rx, self.pg3, dhcp_solicit_src_vrf1)
+
+ self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf1)
#
# Add VSS config
# table=1, fib=id=1, oui=4
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1)
- self.pg3.add_stream(pkts_solicit_vrf1)
+ self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_solicit(rx, self.pg1,
+
+ self.verify_dhcp6_solicit(rx[0], self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac,
fib_id=1,
#
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1, is_add=0)
- self.pg3.add_stream(pkts_solicit_vrf1)
+ self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
- rx = rx[0]
- self.verify_dhcp6_solicit(rx, self.pg1,
+
+ self.verify_dhcp6_solicit(rx[0], self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
- # Cleanup
+ # Add a second DHCP server in VRF 1
+ # expect clients messages to be relay to both configured servers
#
- self.vapi.dhcp_proxy_config(server_addr_vrf1,
+ self.pg1.generate_remote_hosts(2)
+ server_addr2 = socket.inet_pton(AF_INET6, self.pg1.remote_hosts[1].ip6)
+
+ self.vapi.dhcp_proxy_config(server_addr2,
+ src_addr_vrf1,
+ rx_table_id=1,
+ server_table_id=1,
+ is_ipv6=1)
+
+ #
+ # We'll need an ND entry for the server to send it packets
+ #
+ nd_entry = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip6,
+ af=AF_INET6)
+ nd_entry.add_vpp_config()
+
+ #
+ # Send a discover from the client. expect two relayed messages
+ # The frist packet is sent to the second server
+ # We're not enforcing that here, it's just the way it is.
+ #
+ self.pg3.add_stream(p_solicit_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(2)
+
+ self.verify_dhcp6_solicit(rx[0], self.pg1,
+ dhcp_solicit_src_vrf1,
+ self.pg3.remote_mac)
+ self.verify_dhcp6_solicit(rx[1], self.pg1,
+ dhcp_solicit_src_vrf1,
+ self.pg3.remote_mac,
+ dst_mac=self.pg1.remote_hosts[1].mac,
+ dst_ip=self.pg1.remote_hosts[1].ip6)
+
+ #
+ # Send both packets back. Client gets both.
+ #
+ p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
+ UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+ DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+ DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
+ DHCP6OptRelayMsg(optlen=0) /
+ DHCP6_Advertise(trid=1) /
+ DHCP6OptStatusCode(statuscode=0))
+ p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
+ IPv6(dst=self.pg1.local_ip6, src=self.pg1._remote_hosts[1].ip6) /
+ UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+ DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+ DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
+ DHCP6OptRelayMsg(optlen=0) /
+ DHCP6_Advertise(trid=1) /
+ DHCP6OptStatusCode(statuscode=0))
+
+ pkts = [p1, p2]
+
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(2)
+
+ self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf1)
+ self.verify_dhcp6_advert(rx[1], self.pg3, dhcp_solicit_src_vrf1)
+
+ #
+ # Ensure only solicit messages are duplicated
+ #
+ p_request_vrf1 = (Ether(dst=dmac, src=self.pg3.remote_mac) /
+ IPv6(src=dhcp_solicit_src_vrf1,
+ dst=dhcp_solicit_dst) /
+ UDP(sport=DHCP6_SERVER_PORT,
+ dport=DHCP6_CLIENT_PORT) /
+ DHCP6_Request())
+
+ self.pg3.add_stream(p_request_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+
+ #
+ # Test we drop DHCP packets from addresses that are not configured as
+ # DHCP servers
+ #
+ p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
+ IPv6(dst=self.pg1.local_ip6, src="3001::1") /
+ UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
+ DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
+ DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
+ DHCP6OptRelayMsg(optlen=0) /
+ DHCP6_Advertise(trid=1) /
+ DHCP6OptStatusCode(statuscode=0))
+ self.send_and_assert_no_replies(self.pg1, p2,
+ "DHCP6 not from server")
+
+ #
+ # Remove the second DHCP server
+ #
+ self.vapi.dhcp_proxy_config(server_addr2,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
- insert_circuit_id=1,
is_ipv6=1,
is_add=0)
+
+ #
+ # Test we can still relay with the first
+ #
+ self.pg3.add_stream(p_solicit_vrf1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg1.get_capture(1)
+
+ self.verify_dhcp6_solicit(rx[0], self.pg1,
+ dhcp_solicit_src_vrf1,
+ self.pg3.remote_mac)
+
+ #
+ # Cleanup
+ #
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
+ rx_table_id=1,
+ server_table_id=1,
+ is_ipv6=1,
+ is_add=0)
+ self.vapi.dhcp_proxy_config(server_addr_vrf0,
+ src_addr_vrf0,
+ rx_table_id=0,
+ server_table_id=0,
+ is_ipv6=1,
+ is_add=0)
+
+ # duplicate delete
+ self.vapi.dhcp_proxy_config(server_addr_vrf0,
+ src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
- insert_circuit_id=1,
is_ipv6=1,
is_add=0)
Code Review / vpp.git / blobdiff