I spent some time earlier in the week with my laptop running on #IPv6 only while running some tests.
Very interesting to note which websites are still reachable.
✅ chaos.social
✅ codeberg.org
❌ sr.ht
✅ gitlab.org
❌ github.com
✅ debian.org
❌ abc.net.au
✅ bbc.co.uk
I was surprised that #SourceHut failed, as IPv6 support was added a while back, so I did some digging (literally - I used dig).
sr.ht is missing IPv6 glue records. Important, but easy to overlook if you run your own nameservers.