tests: allow TCP IP observations from existing incoming links

tests/test_nat_detection.c

@@ -261,7 +261,9 @@ int main(void) {
     assert(status.round != second_status.round);
     check_snapshot(owner, socket);
     check_snapshot(owner, second_socket);
-    assert(tcp->address_profile.mapping == ADDRESS_MAP_UNKNOWN && tcp->address_profile.inbound == ADDRESS_IN_UNKNOWN);
+    assert(tcp->address_profile.inbound == ADDRESS_IN_UNKNOWN);
+    struct nat_check_status tcp_status;
+    assert(!nat_detection_get_status(owner->nat_det, tcp, &tcp_status) && !tcp_status.rounds && !tcp_status.helper);
 
     /* Профиль B не заимствует профиль A, даже когда транспорт переиспользуется в обе стороны. */
     assert(!route_ping_addr_equal(&socket->local_addr, &observer_socket->local_addr, 1));