**Description** When using topos, Kamailio does not set correct contact in 183 progres and 200 OK. But for INVITE and Bye contacts are correct. **Troubleshooting** When loaded topoh module all work as expected without any issue. **Reproduction** Place a call from sip softphone behind NAT to PSTN GW or in opposite direction. You will have a call with 30 sec long because contact in 183 and 200 OK are incorrect. But when you get Bye from PSTN GW contact are correct. **Additional Information** version: kamailio 5.0.1 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 14:27:34 Apr 5 2017 with gcc 4.8.2 [wrong-contact-dump-with-topos.txt](https://github.com/kamailio/kamailio/fil… -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1077