alt Hacker NewsI've seen that draft. It's not backwards compatible in any ways that v6 isn't.
The people designing v6 knew from the start that interoperability with v4 was a requirement. It's written right into the list of requirements for v6[1], right in the same place that they say that a flag day is never going to happen.
Why do you believe otherwise? The RFC is right there for anybody, including you, to read.
[1] https://datatracker.ietf.org/doc/html/rfc1726#section-5.5
You don’t understand it then. In V8 every IPv4 address is a valid address, that means you can have IPv4 and IPv8 on same IPv8-lan and first class support for translation into the protocol instead of an array of hacks is a miles better solution than the pile of rubbish that v6 is. In fact, IPv6 isn’t even a new version of IPv4, it is a different protocol entirely and a rubbish one.