Comment by toast0

> Every machine should get like a /96 so it can use 32 bits of space to address apps, VMs, containers, etc.

You can just SLAAC some more addresses for whatever you want. Although hopefully you don't use more than the ~ARP~ NDP table size on your router; then things get nasty. This should be trivial for VMs, and could be made possible for containers and apps.

> The V6 header allows extension bits that are never used and blocked by most firewalls. [...] Basically all they should have done was make IPs 64 or 128 bits and left everything else alone.

This feels contradictory... IPv4 also had extension headers that were mostly unused and disallowed. V6 changed the header extension mechanism, but offers the same opportunities to try things that might work on one network but probably won't work everywhere.