<div dir="ltr">Hello,<div><br></div><div>I am trying to start kamailio+rtpengine+asterisk in docker with docker-compose (not in network host mode). And I faced behavior that I can't understand.</div><div><br></div><div>When my phone(fanvil) sends a register to kamailio with his ip in contact - 192.168.88.55 (to host's ip address 192.168.88.55), kamailio 200OK answers with "received=172.18.0.1" param in Via. (172.18.0.1 it is host's docker interface, kamailio's ip is 172.18.0.4)</div><div><div><br></div><div>After that my phone unregisters with Expires: 0 and sends a new register with 172.18.0.1 in contact.</div><div>Is that correct? Is there any way to fix this?</div><div><br></div><div><br></div><div>2020/06/05 12:05:51.764617 <a href="http://172.18.0.1:46142">172.18.0.1:46142</a> -> <a href="http://172.18.0.4:5060">172.18.0.4:5060</a><br></div><div>REGISTER sip:192.168.88.55 SIP/2.0<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK14305253915361123;rport<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1125027099<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>><br>Call-ID: <a href="mailto:2849918516212-27188555511609@192.168.88.100">2849918516212-27188555511609@192.168.88.100</a><br>CSeq: 1 REGISTER<br>Contact: <<a href="http://sip:1000@192.168.88.100:5756">sip:1000@192.168.88.100:5756</a>><br>Max-Forwards: 70<br>Expires: 3600<br>Supported: path<br>User-Agent: Fanvil X3S 2.10.2.6887 0c383e217eb9<br>Allow: INVITE, ACK, OPTIONS, BYE, CANCEL, REFER, NOTIFY, INFO, PRACK, UPDATE, MESSAGE<br>Content-Length: 0<br><br><br>2020/06/05 12:05:51.765716 <a href="http://172.18.0.4:5060">172.18.0.4:5060</a> -> <a href="http://172.18.0.1:46142">172.18.0.1:46142</a><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK14305253915361123;rport=46142;received=172.18.0.1<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1125027099<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1cbccc00ba5f7d13255bc12726ccacc5.59da<br>Call-ID: <a href="mailto:2849918516212-27188555511609@192.168.88.100">2849918516212-27188555511609@192.168.88.100</a><br>CSeq: 1 REGISTER<br>Contact: <<a href="http://sip:1000@192.168.88.100:5756">sip:1000@192.168.88.100:5756</a>>;expires=3600<br>Server: kamailio (5.2.1 (x86_64/linux))<br>Content-Length: 0<br><br><br>2020/06/05 12:05:51.779447 <a href="http://172.18.0.1:46142">172.18.0.1:46142</a> -> <a href="http://172.18.0.4:5060">172.18.0.4:5060</a><br>REGISTER sip:192.168.88.55 SIP/2.0<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK251317807114669601;rport<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1125027099<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>><br>Call-ID: <a href="mailto:2849918516212-27188555511609@192.168.88.100">2849918516212-27188555511609@192.168.88.100</a><br>CSeq: 2 REGISTER<br>Contact: <<a href="http://sip:1000@192.168.88.100:5756">sip:1000@192.168.88.100:5756</a>><br>Max-Forwards: 70<br>Expires: 0<br>Supported: path<br>User-Agent: Fanvil X3S 2.10.2.6887 0c383e217eb9<br>Allow: INVITE, ACK, OPTIONS, BYE, CANCEL, REFER, NOTIFY, INFO, PRACK, UPDATE, MESSAGE<br>Content-Length: 0<br></div><div><br></div><div>2020/06/05 12:05:51.780479 <a href="http://172.18.0.4:5060">172.18.0.4:5060</a> -> <a href="http://172.18.0.1:46142">172.18.0.1:46142</a><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK251317807114669601;rport=46142;received=172.18.0.1<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1125027099<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1cbccc00ba5f7d13255bc12726ccacc5.f669<br>Call-ID: <a href="mailto:2849918516212-27188555511609@192.168.88.100">2849918516212-27188555511609@192.168.88.100</a><br>CSeq: 2 REGISTER<br>Server: kamailio (5.2.1 (x86_64/linux))<br>Content-Length: 0<br></div><div><br></div><div><br></div><div>And new register:</div><div>2020/06/05 12:05:51.780287 <a href="http://172.18.0.1:46142">172.18.0.1:46142</a> -> <a href="http://172.18.0.4:5060">172.18.0.4:5060</a><br>REGISTER sip:192.168.88.55 SIP/2.0<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK2696168232620424454;rport<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=2649930762<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>><br>Call-ID: <a href="mailto:257831362525663-2610472014851@172.18.0.1">257831362525663-2610472014851@172.18.0.1</a><br>CSeq: 1 REGISTER<br>Contact: <<a href="http://sip:1000@172.18.0.1:46142">sip:1000@172.18.0.1:46142</a>><br>Max-Forwards: 70<br>Expires: 3600<br>Supported: path<br>User-Agent: Fanvil X3S 2.10.2.6887 0c383e217eb9<br>Allow: INVITE, ACK, OPTIONS, BYE, CANCEL, REFER, NOTIFY, INFO, PRACK, UPDATE, MESSAGE<br>Content-Length: 0<br><br><br>2020/06/05 12:05:51.781208 <a href="http://172.18.0.4:5060">172.18.0.4:5060</a> -> <a href="http://172.18.0.1:46142">172.18.0.1:46142</a><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 192.168.88.100:5756;branch=z9hG4bK2696168232620424454;rport=46142;received=172.18.0.1<br>From: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=2649930762<br>To: akamvm <<a href="http://sip:1000@192.168.88.55:5060">sip:1000@192.168.88.55:5060</a>>;tag=1cbccc00ba5f7d13255bc12726ccacc5.4b3b<br>Call-ID: <a href="mailto:257831362525663-2610472014851@172.18.0.1">257831362525663-2610472014851@172.18.0.1</a><br>CSeq: 1 REGISTER<br>Contact: <<a href="http://sip:1000@172.18.0.1:46142">sip:1000@172.18.0.1:46142</a>>;expires=3600<br>Server: kamailio (5.2.1 (x86_64/linux))<br>Content-Length: 0<br></div>-- <br><div dir="ltr" data-smartmail="gmail_signature">Aydar A. Kamalov</div></div></div>