[mathsmath]

Someone should double check me, but I think PD less than a /64 also just breaks (and probably is against the spec).

A lot of the complaints I have seen in the last decade is from ISPs doing silly things and cutting their teeth on fresh IPv6 deployments. My ISP seems to have their collective ducks in a row now, and it has been rock solid for years.

I actually had a case recently where a misbehaving IPv4 IoT device consumed my entire DHCP pool. IPv6 devices kept chugging along without any problem.

[Tigress8780]

It probably is. I remember that putting a /72 into OpenWRT's `ip6prefix` field actually breaks the whole network stack (including IPv4, the interface no longer has any address assigned to it).

[simoncion]

I wonder if that's an artifact of configuration-generation scripts detonating before they ever get around to writing out any configuration, leaving the network interfaces entirely unconfigured.