Does this help:, In theory I have 2 kamailios, 1 inside a docker and 1 outside(this one should handle the initial requests) sudo lsof -i :5060 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME kamailio 866 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 877 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 878 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 879 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 880 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 881 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 882 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 883 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 884 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 885 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 887 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 888 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 889 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 890 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 891 kamailio 9u IPv4 7706 0t0 UDP machine:sip kamailio 891 kamailio 10u IPv4 7708 0t0 TCP machine:sip (LISTEN) sudo ss -ltnup | grep 5060 udp UNCONN 0 0 10.0.0.4:5060 0.0.0.0:* users:(("kamailio",pid=891,fd=9),("kamailio",pid=890,fd=9),("kamailio",pid=889,fd=9),("kamailio",pid=888,fd=9),("kamailio",pid=887,fd=9),("kamailio",pid=885,fd=9),("kamailio",pid=884,fd=9),("kamailio",pid=883,fd=9),("kamailio",pid=882,fd=9),("kamailio",pid=881,fd=9),("kamailio",pid=880,fd=9),("kamailio",pid=879,fd=9),("kamailio",pid=878,fd=9),("kamailio",pid=877,fd=9),("kamailio",pid=866,fd=9)) tcp LISTEN 0 1024 10.0.0.4:5060 0.0.0.0:* users:(("kamailio",pid=891,fd=10))
sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f3x containier1 "bash /x…" 4 hours ago Up 2 minutes 0.0.0.0:8081->8081/tcp, :::8081->8081/tcp siptest 37x containier2 "bash /xx…" 4 hours ago Up 2 minutes 1544/tcp, 0.0.0.0:1554->1554/tcp, :::1554->1554/tcp, 4000-5001/tcp, 0.0.0.0:5002-5037->5002-5037/tcp, :::5002-5037->5002-5037/tcp, 5038/tcp, 5060/udp, 0.0.0.0:5039-5053->5039-5053/tcp, 0.0.0.0:1554->1554/udp, :::5039-5053->5039-5053/tcp, :::1554->1554/udp, 5054-6000/tcp, 8088-8089/tcp, 10000-10099/tcp, 0.0.0.0:8066->8066/tcp, 0.0.0.0:8066->8066/udp, :::8066->8066/tcp, :::8066->8066/udp, 8060/udp unimrcp cfx containier3 "bash /xx…" 4 hours ago Up 2 minutes 1544/tcp, 4000-5037/tcp, 5039-5059/tcp, 0.0.0.0:5038->5038/tcp, :::5038->5038/tcp, 5061-6000/tcp, 0.0.0.0:8060->8060/tcp, :::8060->8060/tcp, 0.0.0.0:8068->8068/tcp, :::8068->8068/tcp, 8066/tcp, 10000-10099/tcp, 0.0.0.0:8088->8088/tcp, :::8088->8088/tcp, 0.0.0.0:8060->8060/udp, :::8060->8060/udp, 8066/udp, 0.0.0.0:5061->5060/tcp, 0.0.0.0:5061->5060/udp, [::]:5061->5060/tcp, [::]:5061->5060/udp, 0.0.0.0:8090->8089/tcp, [::]:8090->8089/tcp asterisk e3x containier4 "/bin/sh -c 'bash /k…" 4 hours ago Up 2 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp kamailio 5ex containier5 "flask run --host=0.…" 24 hours ago Up 2 minutes 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp, 0.0.0.0:5433->5433/tcp, :::5433->5433/tcp