There seems to be some IPv6 connectivity problems for some users.
You need at least XP SP1 with advanced networking or SP2 for OCTGN to work.
Under XP IPv6 is disabled by default and Teredo is not installed. You should execute those commands:
netsh interface ipv6 install
netsh interface ipv6 set teredo client
Also be sure that in your network properties, the IPv6 protocol is enabled for your main adapater.
If you still have problems after that (e.g. no green IP showing up in OCTGN), can you please make a post here and tell me:
- Your OS;
- Do you have Hamachi;
- The results (especially the error part) of "netsh interface ipv6 show teredo".
EDIT: as people can't reply on this board, I've open another thread here: http://www.octgn.net/forum/index.php?topic=480.0