Can't establish Wireguard connection between containers

[poisonborz]

I'm trying to set up Wireguard server/client in LXC containers with no luck. I tried raw wireguard, wg-easy, turnkey-wireguard template, all with the same results: no connection/handshake between server and client containers (or external clients on the same network).

I enabled ip4 forwarding on the host and also tried to disable firewall on the container.
Sadly wireguard seems to be very hard to inspect if there is an error, no logs, you can only hit up wg show.

Any way to see what is wrong?