So about 2 years ago I went on some rant about how unneccesary ipv6 is.
I still think everything I said flies now as well as it did 2 years ago.
But I thought of something else.
You can’t nat forever because of port exhaustion on the internet facing machine.
I concede the point.
But, I also don’t know anybody who has only 1 ip address.
You write some fancy software, put your network card in promiscuous mode and now you can nat out from 64k ports times the number of ip addresses you have, all with one computer.
There are lots and lots and lots of unused ports on those existing 4 billion ip addresses out there.
We really don’t need ipv6 yet, and won’t for a long long time.