Hello,Bernard Thank you very much! I follow you suggestion.Add listen=udp:[ipv6_adresss]5060 in the file opener.cfg.when I restart the service it works. Best regards Junjie Zhao 2007-03-15 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kamailio.org/pipermail/users/attachments/20070315/9f30847d/attachment.htm