Not bind to localhost
I started up with config as described below and confirmed that it is not bind to localhost.
net.listen({net.eth0, '127.0.0.1'}, 53, {tls = true})
kometch@dns02:~$ sudo netstat -antp | grep kresd
tcp 0 0 192.168.122.223:53 0.0.0.0:* LISTEN 21905/kresd
tcp 0 0 192.168.122.223:53 0.0.0.0:* LISTEN 21904/kresd
Error messages such as "bind can not bind" are not output to log.
Dec 24 20:17:09 dns02 systemd[1]: Starting Knot DNS Resolver daemon...
Dec 24 20:17:09 dns02 kresd[21904]: [system] bind to 'fe80::6047:82ff:fea7:226d#53' Invalid argument
Dec 24 20:17:09 dns02 kresd[21904]: [system] bind to 'fe80::6047:82ff:fea7:226d#53' Invalid argument
Dec 24 20:17:10 dns02 systemd[1]: Started Knot DNS Resolver daemon.
Dec 24 20:17:10 dns02 systemd[1]: kresd.service: Got notification message from PID 21905, but reception o
kometch@dns02:~$ kresd -V
Knot DNS Resolver, version 1.2.0-dev