+ # session now in transitory timeout
+ # try SYN packet out->in - should be dropped
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=service_ip) /
+ TCP(sport=33898, dport=80, flags="S"))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.sleep(new_transitory, "wait for transitory timeout")
+ self.pg0.assert_nothing_captured(0)
+
+ # session should still exist
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ # send FIN+ACK packet out -> in - will cause session to be wiped
+ # but won't create a new session
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=service_ip) /
+ TCP(sport=33898, dport=80, flags="FA", seq=300, ack=101))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)