I have tried using the debian 10/11/12 LXC templates on Proxmox, but I can’t get IPv6 to work as expected. Which is weird, since just setting IPv6 to SLAAC/auto works as expected for ubuntu 20.04 containers with no additional configuration in the container itself.
What I encountered:
- Debian overrides the DNS settings set in proxmox with values from DHCP
- DHCPv6 DNS updates required manually setting
send fqdn.fqdn "...";indhclient.conf - DHCPv6 DNS updates only work when manually calling
dhclient -6
Those all can be fixed, but are bit of a pain, since I have to manually update configuration files in the container itself. I also have to duplicate the configuration, for example the hostname/domain name in the configuration.
Has anyone got IPv6 working on debian LXCs without any additional config in each container? Or any ideas what’s different between the debian and ubuntu LXCs?
I think I misunderstood you. The one I was talking about was a bug in proxmox. If it’s an issues inside lxc, you can replicate the Ubuntu networking stack using nmcli or use systemd-networkd and resolved directly. It behaves identically as far as I know.