Everything that's needed besides letting computers talk to each other, that is.
With ipv4 you have a two tier internet. Computers talk to servers, servers talk to servers, computers can't talk to computers so every video call must be routed through a server.
And wasn't that THE POINT of the internet and it's decentralised design?
I hear this as a cited as a benefit of IPv6 a lot. Honest question: Isn't this at least a privacy issue, at most a security issue? SLAAC seems like what we already have with extra, breakable steps, which doesn't effectively address the privacy issue anyway.