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### 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 ```