Since IPv6 came out as an option, it’s been fairly reliable with establishing home and world connections up until the release of Shadowlands and the patches leading up to it. With SL, more times than not I’m unable to establish an IPv6 world connection and instead am defaulted to IPv4. Home connections seem to be fairly stable with establishing an IPv6 connection so I’d appreciate some help with getting this sorted out.
I understand I can simply turn off IPv6 in the network settings. Leaving IPv6 on doesn’t really do anything aside from increasing my latency to the IPv6 connection by about 10 or so ms. The point is, I’m trying to use an option that’s been readily available in the World of Warcraft game settings that is no longer behaving as it used to.
This sounds like more of a bug and not something that we would be able to troubleshoot over the forums unfortunately. If you have IPv6 enabled in-game and you’re still seeing an IPv6 Home connection, then that means the IPv6 World connection should work as long as it’s configured correctly on the server side.
There were changes to how world servers are hosted with Shadowlands, so it’s possible that IPv6 is not working properly in every situation due to these changes. Hopefully that is something that our QA team and WoW engineers can take a look at and get cleared up.
I’d recommend reporting this over on the #support:bug-report forums or do a search there to see if anyone else has reported similar behavior. IPv6 is not used very widely so other reports may be sparse, but the more reports the better.