alt Hacker NewsIf I have 1.2.3.4 in ipv4 world, I want 1.2.3.4 in ipv6 world instead of a random new address. I want another ipv6 host to be able to send dst=1.2.3.4 and have it go directly to my ipv6 host. 6to4 isn't comparable to that, it's for translation to/from v4 like you said.
> If I have 1.2.3.4 in ipv4 world, I want 1.2.3.4 in ipv6 world instead of a random new address.
::ffff:1.2.3.4
* https://en.wikipedia.org/wiki/IPv6#IPv4-mapped_IPv6_addresse...
By having 1.2.3.4 you also got 2002:1.2.3.4::/48 'for free' (per 6to4). So if you want to send things to 1.2.3.4 / ::ffff:1.2.3.4, you tell your router that it's available via 2002:1.2.3.4::/48.
Any idea that you think is clever and to 'just' do X and/or Y for IPng, and would work, has probably already been thought of and attempted in the last 20-30.