Networking - Debian 13 instances not getting IP from DHCP/SLAAC?

[Chris78]

Not the firewall on the host, that is now disabled.

Doesn’t seem to be any firewall in the container as neither ufw or firewalld services are running.

I’m starting to run out of ideas, other than trying a privileged container?

This host does have Docker installed, possible that is part of the issue?

LXD/LXC containers not getting IP from lxdbr0

Check that you don’t have Docker installed on the host, it likes to mess with networking, preventing other containers/vms from working. If that’s not it, check that you don’t have firewalling in place on the host which would similarly prevent LXD networking from working. If that’s still not it, check that dnsmasq is running on lxdbr0, if that’s not the case, look for conflicting DNS/DHCP server on the system.