Systemd-resolved integration seems to not work

LXD
1

I tried following the steps as outlined here: https://documentation.ubuntu.com/lxd/en/latest/howto/network_bridge_resolved/

I initially forgot the leading ~ but I fixed that.

When I do resolvectl query ubuntu (I have a container named ubuntu), it prints out this:

ubuntu: 'ubuntu' not found

When I instead do resolvectl query ubuntu.lxd, I get this:

ubuntu.lxd: resolve call failed: All attempts to contact name servers or networks failed
2

I have dns.mode set to managed.

3

OK, I have determined the issue. I need to run resolvectl dnsovertls lxdbr0 no and resolvectl dnssec lxdbr0 no.

4

That’s indeed needed if you have DoT and DNSSEC globally enabled as the LXD DNS resolver only implements regular DNS (UDP/53 and TCP/53).