Hello, the screenshots does not show any details about the REGISTER flow. Have a look to the actual network traffic from the client to the server to see what is happening (like is a message rejected etc..). Then report more details here on the list. Cheers, Henning Am 26.04.19 um 13:47 schrieb Santosh Kumar Dash: Thanks Daniel for your quick response. I tried the above one which you mention above, I am sharing my screenshot which is showing it is listening on the given addresses but registration not happening, kindly saw the attached picture once. Actually I need a basic call like below. endopint-1 kamailio endpoint-2 REGISTER --------> | <--------- REGISTER REGISTER 200 OK <------- | ---------> REGISTER 200 OK INVITE ---------> | ---------> INVITE 180 RINGING <-------- | <-------- 180 RINGING 200 OK INVITE <-------- | <-------- 200 OK INVITE ACK ---------> | ---------> ACK -----------MEDIA------------- BYE -------------> BYE BYE 200 OK <------------ BYE 200 OK REGISTER (exp=0) --------> | <--------- REGISTER REGISTER 200 OK <------- | ---------> REGISTER 200 OK Thanks, On Fri, 26 Apr 2019, 4:54 pm Daniel-Constantin Mierla, <miconda@gmail.com<mailto:miconda@gmail.com>> wrote: Hello, if you do not need anything special, just handling registrations over ipv6 and route between the users, then do: listen=udp:[2402:3a80:d1a:f45a:fe44:2e54:ed2b:9bb2]:5060 A rather outdated tutorial, but still a good reading, is available at: * https://kb.asipto.com/kamailio:kamailio-mixed-ipv4-ipv6 See also the core cookbook on kamailio.org/wiki<http://kamailio.org/wiki>ki>, there are couple of other parameters that you can tune. Cheers, Daniel On 26.04.19 13:00, Santosh Kumar Dash wrote: Hi All, I have a kamailio installed in my setup which is working properly in IPV4 configuration. I want to perform IPV6 configuration, I don't have any idea how to configure it, I have tried few things by changing kamailio.cfg file but did not work. I am sharing my kamailio.cfg file which is working fine in ipv4 Kindly help me to configure for IPV6. lets say my Ipv6 address is : 2402:3a80:d1a:f45a:fe44:2e54:ed2b:9bb2 Thanks, _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com<http://www.asipto.com> www.twitter.com/miconda<http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com<http://www.kamailioworld.com> _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://skalatan.de/services