Having followed a tutorial, I could make #WireGuard wg-quick work on my #OpenBSD, but not without DNS query leaks, so I learned I must figure out #unbound - however, a noob like me can only seem to manage to fix configuration errors while unbound itself apparently won't start because of this (which I found out after learning there's more than one way to debug unbound - not elegant, imho):

[1781449588] unbound[95585:0] error: bind: address already in use
[1781449588] unbound[95585:0] fatal error: could not open ports

I figured I should add my VPN interfaces to unbound.conf, but other than that I'm still clueless what else do I need to add or delete.

Thanks for your patience.