I mean - OK IPV4 exhaustion is a real thing. I’m just saying that there are 2 mitigations.
1. NAT - without which we would have run out eons ago.
2. Reselling address blocks - just like any other commodity - just because something has been sold once doesn’t preclude it from being sold again - on the “secondary market”.
Completely agree. Almost everyone NATs without realizing or understanding what it means. Class C addresses (192.168.0.0/16) are the most popular local adapter addresses around the world, and without them, we would’ve run out of IPv4 addresses decades ago.
IPv6 adoption is very slow. Hopefully with the sale of the last block of IPv4 addresses, corporations will start looking at IPv6 as a serious need as opposed to a nuisance.
I don’t know about your shop, but our network engineers, several of whom have Cisco certifications, don’t want to touch IPv6 with a 10-foot pole. As a Microsoft certified engineer myself, I know more and have done more with IPv6 than my network counterparts. Here’s hoping they get on board soon!