Comment by aitchnyu
What are the issues faced by v6-only hosts and are there countries where it is a non-issue?
What are the issues faced by v6-only hosts and are there countries where it is a non-issue?
The massivest companies are the stupidest. Do what you can to avoid all Microsoft products.
My theory: Microsoft is extremely interested in tracking you via your IPv4.
I doubt "extremely interested" is the reason.
There may indeed be some tracking that MS does via IPv4, but it's not a good way to do it.
I suspect any such tracking is essentially just some cruft that snuck in (either their own or legislative) in the early 2000s, and nobody thinks it's their problem to make go away.
That said, that IPv4 is a poor way to do tracking doesn't guarantee there's no manager demanding it: any corporation eventually gets someone with no technical knowledge demanding bad solutions.
GitHub is the main problem currently. Some software like composer does not work due to this.
https://github.com/orgs/community/discussions/10539
For countries, if you meaning connecting to VPS, lot of countries have good IPv6 connectivity now. For me both ISPs I use have native v6. This will differ from person to person.
https://www.aelius.com/njh/google-ipv6/