[Serusers] SER WITH IPV6 registration problems

Hi all I have configured SER on IPV6 on a linux suse 10.1, and i changed ser.cfg so that the server supports IPV6 my clients are on a windows machine and they run also on ipv6 i'm facing a problems: i did set the sip account for a client , after that it rediscovers the network but it can not register and i get this message: registration error 503 service unavaialable so what is the problem and what can i do? regards _________________________________________________________________ _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/