diff options
Diffstat (limited to 'test/test_nat.py')
| -rw-r--r-- | test/test_nat.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/test/test_nat.py b/test/test_nat.py index 424b92c6e34..76cc7338c5a 100644 --- a/test/test_nat.py +++ b/test/test_nat.py @@ -3972,6 +3972,63 @@ class TestNAT44EndpointDependent(MethodHolder): self.logger.error(ppp("Unexpected or invalid packet:", p)) raise + def test_next_src_nat(self): + """ On way back forward packet to nat44-in2out node. """ + twice_nat_addr = '10.0.1.3' + external_port = 80 + local_port = 8080 + post_twice_nat_port = 0 + + self.vapi.nat44_forwarding_enable_disable(1) + self.nat44_add_address(twice_nat_addr, twice_nat=1) + self.nat44_add_static_mapping(self.pg6.remote_ip4, self.pg1.remote_ip4, + local_port, external_port, + proto=IP_PROTOS.tcp, out2in_only=1, + self_twice_nat=1, vrf_id=1) + self.vapi.nat44_interface_add_del_feature(self.pg6.sw_if_index, + is_inside=0) + + p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) / + IP(src=self.pg6.remote_ip4, dst=self.pg1.remote_ip4) / + TCP(sport=12345, dport=external_port)) + self.pg6.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg6.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, twice_nat_addr) + self.assertNotEqual(tcp.sport, 12345) + post_twice_nat_port = tcp.sport + self.assertEqual(ip.dst, self.pg6.remote_ip4) + self.assertEqual(tcp.dport, local_port) + self.assert_packet_checksums_valid(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) / + IP(src=self.pg6.remote_ip4, dst=twice_nat_addr) / + TCP(sport=local_port, dport=post_twice_nat_port)) + self.pg6.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg6.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, self.pg1.remote_ip4) + self.assertEqual(tcp.sport, external_port) + self.assertEqual(ip.dst, self.pg6.remote_ip4) + self.assertEqual(tcp.dport, 12345) + self.assert_packet_checksums_valid(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + def twice_nat_common(self, self_twice_nat=False, same_pg=False, lb=False, client_id=None): twice_nat_addr = '10.0.1.3' |