[thebytefairy]

I work with Fortune 50s in cloud, and they can barely manage ipv4. If you're in a digital native it's different, but in my experience most behemoths do not inspire confidence with how on top of their network infrastructure they are.

[amluto]

This is a bit like saying “customers can barely manage driving a stick shift with a manual choke — we shouldn’t let them drive automatics!”

IPv6 isn’t amazing, but it makes many of these problems simply disappear. Of course [0] networks should be isolated, but this should be achieved with a firewall that, by default, disallows connections between the public Internet and private networks. And that’s about it — every VM has a globally unique address, routing just works, one company (if permitted) can connect to another company’s endpoints, firewalls can be deployed where they make sense instead of being forced to exist exactly where inconsistently-addressed networks meet, etc.

The entire mess of designing and negotiating allocation of extremely limited IPv4 addresses for private systems simply disappears!

[0] Beyond corp has something to say about this.