not reachable via ipv6

First many thanks for providing github dot com, it’s great to have it and it helps a lot of projects
to exist at all.

But it’s almost 2022 and it’s sad that it’s still not possible to reach github dot com
from ipv6 only machines.

IPv4 addresses get more and more expensive, e.g.
While ipv6 addresses are basically free almost everywhere!

At least it would be interesting to know what the problem is
and why doesn’t seem to care about ipv6 only users…