I have been using openser as an ALG for the purpose of NAT traversal. Unfortunately my public IP is dynamically assigned. Although openser is aware of the IP's available on the host, I have searched unsuccessfully the documentation for a way to expose this information to the configuration script. Have I missed something? I am using the following ugly work around. DHCP client writes to /var/openser/my-ip From the rtpproxy init script - OPTIONS="-l 192.168.1.1/`cat /var/openser/my_ip` -s udp:localhost:12221" from openser.cfg - route{ # get our public ip, this happens only once if !$var(ip_initialized) == "yes" { xlog("L_NOTICE", "****************************************************\n"); xlog("L_NOTICE", "*** Initializing the IP for masquerading SIP Contact\n"); exec_avp("cat /var/openser/my_ip", "$avp(s:pub_ip)"); pv_printf("$var(my_ip)", "$avp(s:pub_ip)"); xlog("L_NOTICE", "*** New public IP is <$var(my_ip)>\n"); $var(ip_initialized) = "yes"; }; mangle contacts