<!-- Kamailio Project uses GitHub Issues only for bugs in the code or feature requests. If you have questions about using Kamailio or related to its configuration file, ask on sr-users mailing list: * http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list * http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot the issue. If you submit a feature request (or enhancement), you can delete the text of the template and only add the description of what you would like to be added. If there is no content to be filled in a section, the entire section can be removed. You can delete the comments from the template sections when filling. You can delete next line and everything above before submitting (it is a comment). --> ### Description <!-- Explain what you did, what you expected to happen, and what actually happened. --> After upgrading kamailio from 4.4.5 to 5.0.2 ACK/BYE packets are routed incorrectly. Instead of routing from KAMAILIO INT IP to SIP UAC #2 ACK/BYE packets are routed from KAMAILIO EXT IP to KAMAILIO INT IP. I attached two diagrams. First is from kamailio 4.4.5 with correct routing. Second is from kamailio 5.0.2 with wrong routing. One of improtant notice is when topoh module is disabled ACK/BYE packets are routed correctly on kamailio 5.0.2. Also in kamailio 5.0.2 DURI and RURI of ACK/BYE packets are populated not by Contact value of OK packet from SIP UA #2 but Record-Route value from OK packet. In kamailio 4.4.5 DURI is not populated at all and RURI is correct one. ### Troubleshooting #### SIP Traffic <!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). --> SIP trace diagram from kamailio 4.4.5: http://imgur.com/5J95spW SIP trace diagram from kamailio 5.0.2: http://imgur.com/TDOGdgA <!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. --> ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 4.4.5 (x86_64/linux) f98162 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: f98162 compiled on 03:47:31 Feb 27 2017 with gcc 4.8.5 ``` * **Operating System**: <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) --> ``` Red Hat Enterprise Linux Server release 7.3 (Maipo) Linux 2.6.32-042stab113.21 #1 SMP Wed Mar 23 11:05:25 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux ``` -- 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/1165