How does this matter for the top websites?
If a user types in a domain, eventually a root dns responds with an ipv4 A record and resolves to a server the site has configured. Am I missing something?
If a user types in a domain, eventually a root dns responds with an ipv4 A record and resolves to a server the site has configured. Am I missing something?
By supplying v6 you ensure anyone in the world can access it regardless of which IP protocol is deployed by your carrier and how they are or aren't translating from one to the other.
Sounds like this is mostly the case, but it has some issues and any new ISP on v6 would have a hard time because a lot of the big sites would be unreachable.
It's about being a good netizen.
Of course, this becomes political soon enough. As new countries see mass adoption of the interwebs and find out that they have massively smaller allocations of IP addresses than the existing countries they might feel annoyed and do something about it. Tempers flare, shoes are thrown, everyone gets sulky and unhappy.
All this could be avoided if we just flipped a few switches, wrote some code, and all moved to IPv6. It's such an easy, small thing to do. Why not just do that and not irritate the living buggery out of everyone?