I recently decided on a whim to try an IPv6-only VPS which was something like 70% off at my provider. It being for internal stuff only, I thought it shouldn't be too much of a problem.

As it turns out, not even the Ubuntu repositories are reachable over IPv6.

I believe this was the PPA server, which held some package I needed for some workaround for all the other connectivity problems.

So let's hope a few important people/companies/institutions start to be slightly inconvenienced. I bet as soon as this rises to the concern of, say, some peoples' Netflix stream stuttering it's a matter of weeks to solve it.