My mobile carrier provides dual stack (with NAT in the IPv4 side). So no problem with any kind of site. Are there operators who provide IPv6 only? Haven't really read up on that topic, but I guess that requires NAT64 because the average user needs to reach IPv4-only sites. Does that generally work well?
If yes, why can the poster of the submission not use that on his Hetzner instances?
Apple has required app developers to support ipv6 only deployments since 2015: https://developer.apple.com/support/ipv6/
For landlines, I'm surprised because some ISPs who were not having difficulties with ipv4 are being the fastest to switch to ipv6. While some who had to deal with CG-NAT and other horrible stuff are fine with ipv4, and haven't yet planned to move to ipv6
Is this due to corporate culture or something ?
I guess you can't use NAT64 at Hetzner because Hetzner doesn't provide it.
There are also free NAT64 solutions, but of course you can't base anything but a random hobby project on something free. Maybe there are also commercial solutions, but IPv4 might still be too cheap to make that really interesting.
Actually the AskHN talks mostly about client cases. Those still seem "easy". Offering more than one service on let's say port 443 would require a full application level gateway / forward-proxy.