Explain routing between ipv6 and ipv4?

Question

Computer networks

Faced ipv6 and I don't understand a bit. Is there some kind of global provider routing from ipv6 to ipv4?
Let me explain.
Set up 2 addresses on debian. ipv4 traffic goes through its own address, ipv6 - through its own. Everything is great.
Now I want to disable version 4 so that all requests go through 6.
Now, if the domain name is not mapped to an ipv6 address, then there is no access to it.
How to setup?

Answer 1

No way. These are two parallel worlds.
ipv6 only is still very premature

Answer 2

Not every provider has implemented IPv6 in its network, for the most part this is due to outdated equipment, if replacing a router for a home or office is a $ 40-50 issue, then replacing your core will be much more expensive and there will be no exhaust from this (although I know which ip6 sells as a service).
In fact, you can use any standard within your network, but at the exit to the world, you still get ip4.
As Ruslan Fedoseev said above "ipv6 only is still very premature"

Answer 3

"хочу отключить 4 версию, чтобы все запросы шли по 6"
По идее нужно:
1) Убрать A записи из DNS, оставить только AAAA запись в DNS
2) Веб-сервер должен слушать ipv6 адрес или "все адреса".
3) Подразумевается что сервер сам по себе уже настроен на ipv6 и пингуется по ipv6 адресу.
Если что-то не работает - надо смотреть пациента - может быть дело в iptables, или у вас проблемы с доступом по https или надо просто подождать обновления DNS.

Answer 4

You can safely enable IPv6 on your local network if all your equipment supports it.
On the Internet, it is a little more complicated, it all depends on the provider. But there are also tunnel brokers and the 6to4 mechanism