def test_preferred_greater_than_valid_lifetime(self):
""" Preferred lifetime is greater than valid lifetime """
address1 = '::2:0:0:0:405/60'
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group)
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
validlft=3)
self.send_reply(iapdopt=ia_pd_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
is_add=0)
def test_T1_greater_than_T2(self):
"""T1 is greater than T2"""
address1 = "::2:0:0:0:405/60"
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
)
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=4, validlft=8
)
self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
prefix_group=self.prefix_group,
address_with_prefix=address1,
is_add=False,
)
def test_T1_greater_than_T2(self):
""" T1 is greater than T2 """
try:
address_bin = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
address_prefix_length = 60
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin,
address_prefix_length,
self.prefix_group)
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
validlft=8)
self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin,
address_prefix_length,
self.prefix_group,
is_add=0)
def test_prefixes(self):
"""Test handling of prefixes"""
address1 = "::2:0:0:0:405/60"
address2 = "::76:0:0:0:406/62"
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
)
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=2, validlft=3
)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(addr, "7:8:0:2::405")
self.sleep(1)
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address2,
prefix_group=self.prefix_group,
)
self.sleep(1)
# check FIB contains 2 addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 2)
addr1 = list(new_addresses)[0]
addr2 = list(new_addresses)[1]
if addr1 == "7:8:0:76::406":
addr1, addr2 = addr2, addr1
self.assertEqual(addr1, "7:8:0:2::405")
self.assertEqual(addr2, "7:8:0:76::406")
self.sleep(1)
# check that the addresses are deleted
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
if address1 is not None:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
is_add=0,
)
if address2 is not None:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address2,
prefix_group=self.prefix_group,
is_add=0,
)
def test_dhcp_pd_send_solicit_receive_advertise(self):
"""Verify DHCPv6 PD Solicit packet and Advertise event"""
self.vapi.dhcp6_clients_enable_disable(enable=1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
prefix = {
"prefix": {"address": "1:2:3::", "len": 50},
"preferred_time": 60,
"valid_time": 120,
}
prefixes = [prefix]
self.vapi.dhcp6_pd_send_client_message(
server_index=0xFFFFFFFF,
mrc=1,
msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT,
sw_if_index=self.pg0.sw_if_index,
T1=20,
T2=40,
prefixes=prefixes,
n_prefixes=len(prefixes),
)
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertEqual(packet.haslayer(IPv6), 1)
self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_pd = packet[DHCP6OptIA_PD]
self.assert_equal(ia_pd.T1, 20)
self.assert_equal(ia_pd.T2, 40)
self.assert_equal(len(ia_pd.iapdopt), 1)
prefix = ia_pd.iapdopt[0]
self.assert_equal(prefix.prefix, "1:2:3::")
self.assert_equal(prefix.plen, 50)
self.assert_equal(prefix.preflft, 60)
self.assert_equal(prefix.validlft, 120)
self.vapi.want_dhcp6_pd_reply_events(enable_disable=1, pid=os.getpid())
try:
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=60, validlft=120
)
p = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(
src=util.mk_ll_addr(self.pg0.remote_mac), dst=self.pg0.local_ip6_ll
)
/ UDP(sport=547, dport=546)
/ DHCP6_Advertise(trid=trid)
/ DHCP6OptServerId(duid=self.server_duid)
/ DHCP6OptClientId(duid=client_duid)
/ DHCP6OptPref(prefval=7)
/ DHCP6OptStatusCode(statuscode=1)
/ DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_prefix = ev.prefixes[0]
prefix = ia_pd_opts.getfieldval("prefix")
self.assert_equal(str(reported_prefix.prefix).split("/")[0], prefix)
self.assert_equal(
int(str(reported_prefix.prefix).split("/")[1]),
ia_pd_opts.getfieldval("plen"),
)
self.assert_equal(
reported_prefix.preferred_time, ia_pd_opts.getfieldval("preflft")
)
self.assert_equal(
reported_prefix.valid_time, ia_pd_opts.getfieldval("validlft")
)
finally:
self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
self.vapi.dhcp6_clients_enable_disable(enable=0)
def test_prefixes(self):
""" Test handling of prefixes """
address_bin_1 = None
address_bin_2 = None
try:
address_bin_1 = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
address_prefix_length_1 = 60
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_1,
address_prefix_length_1,
self.prefix_group)
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=2,
validlft=3)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(inet_ntop(AF_INET6, addr), '7:8:0:2::405')
self.sleep(1)
address_bin_2 = '\x00' * 6 + '\x00\x76' + '\x00' * 6 + '\x04\x06'
address_prefix_length_2 = 62
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_2,
address_prefix_length_2,
self.prefix_group)
self.sleep(1)
# check FIB contains 2 addresses
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 2)
addr1 = list(new_addresses)[0]
addr2 = list(new_addresses)[1]
if inet_ntop(AF_INET6, addr1) == '7:8:0:76::406':
addr1, addr2 = addr2, addr1
self.assertEqual(inet_ntop(AF_INET6, addr1), '7:8:0:2::405')
self.assertEqual(inet_ntop(AF_INET6, addr2), '7:8:0:76::406')
self.sleep(1)
# check that the addresses are deleted
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
if address_bin_1 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_1,
address_prefix_length_1, self.prefix_group, is_add=0)
if address_bin_2 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_2,
address_prefix_length_2, self.prefix_group, is_add=0)
def test_dhcp_pd_send_solicit_receive_advertise(self):
""" Verify DHCPv6 PD Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
prefix_bin = '\00\01\00\02\00\03' + '\00' * 10
prefix = {'prefix': prefix_bin,
'prefix_length': 50,
'preferred_time': 60,
'valid_time': 120}
self.vapi.dhcp6_pd_send_client_message(1, self.pg0.sw_if_index,
T1=20, T2=40, prefixes=[prefix])
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertTrue(packet.haslayer(IPv6))
self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_pd = packet[DHCP6OptIA_PD]
self.assert_equal(ia_pd.T1, 20)
self.assert_equal(ia_pd.T2, 40)
self.assert_equal(len(ia_pd.iapdopt), 1)
prefix = ia_pd.iapdopt[0]
self.assert_equal(prefix.prefix, '1:2:3::')
self.assert_equal(prefix.plen, 50)
self.assert_equal(prefix.preflft, 60)
self.assert_equal(prefix.validlft, 120)
self.vapi.want_dhcp6_pd_reply_events()
try:
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
validlft=120)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
DHCP6_Advertise(trid=trid) /
DHCP6OptServerId(duid=self.server_duid) /
DHCP6OptClientId(duid=client_duid) /
DHCP6OptPref(prefval=7) /
DHCP6OptStatusCode(statuscode=1) /
DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_prefix = ev.prefixes[0]
prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
self.assert_equal(reported_prefix.prefix, prefix)
self.assert_equal(reported_prefix.prefix_length,
ia_pd_opts.getfieldval("plen"))
self.assert_equal(reported_prefix.preferred_time,
ia_pd_opts.getfieldval("preflft"))
self.assert_equal(reported_prefix.valid_time,
ia_pd_opts.getfieldval("validlft"))
finally:
self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)