I am currently trying to get my Relay ipv6 ready. However the Port Tor Runs on seems inaccessible. Couldn't identify an issue with Port forwarding (ipv4 works; SSH on ipv6 works as well).
The Ping-Check specified at https://trac.torproject.org/projects/tor/wiki/TorRelayGuide#IPv6 worked for all but 001:678:558:1000::244. Also don't have an explanation for that, since ipv6 Pings seem to work fine (eg. Google works on ipv6), but if I enter the address in an online Pingtest (Webpage that let you Ping targets) they report it as online.