Forwarder not being set on UDM-Pro

[nalabelle]

I was trying to set up ctrld on a Ubiquiti UDM-Pro and I couldn't get it working. I tracked it down to the dnsmasq file not being written here.

I can start ctrld, manually create /run/dnsmasq.conf.d/zzzctrld.conf with these contents, and pkill dnsmasq, and then everything works as expected.

no-resolv
server=127.0.0.1#5354
add-mac

When I shutdown ctrld, it deletes that file.

System Details

root@Dream-Machine-Pro:~# uname -o
GNU/Linux
root@Dream-Machine-Pro:~# uname -u
uname: invalid option -- 'u'
Try 'uname --help' for more information.
root@Dream-Machine-Pro:~# ubnt-device-info firmware && echo
4.0.21
root@Dream-Machine-Pro:~# test -d /data/unifi && echo "true"
true

Log excerpt

root@Dream-Machine-Pro:~# ctrld service start --log /tmp/ctrld.log -vv
Dec 20 14:45:01.000 NTC Reading config: /etc/controld/ctrld.toml
Dec 20 14:45:01.000 INF loading config file from: /etc/controld/ctrld.toml
Dec 20 14:45:01.131 NTC Starting service
Dec 20 14:45:03.104 DBG waiting for ctrld listener to be ready
Dec 20 14:45:03.655 NTC Service started

# /tmp/ctrld.log
{"level":"info","time":"2024-12-20T14:45:03-08:00.426","message":"starting ctrld v1.3.11"}
{"level":"info","time":"2024-12-20T14:45:03-08:00.505","message":"os: linux Debian GNU/Linux 11 (bullseye) (4.19.152-ui-alpine)"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.507","message":"control server started: /var/run/ctrld_control.sock"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.508","message":"resolving \"dns.nextdns.io\" using bootstrap DNS [\"76.76.2.22:53\" \"[fe80::200:5eff:fe00:101]:53\"]"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.544","message":"got answer from nameserver: 76.76.2.22"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.569","message":"got answer from nameserver: 76.76.2.22"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.569","message":"bootstrap IPs: [2001:19f0:ac01:170:5400:2ff:fec8:72c8 2a0e:6901:410:25:5054:ff:fe1c:7c81 104.238.181.28 209.209.57.165]"}
{"level":"info","time":"2024-12-20T14:45:03-08:00.569","message":"bootstrap IPs for upstream.0: [\"2001:19f0:ac01:170:5400:2ff:fec8:72c8\" \"2a0e:6901:410:25:5054:ff:fe1c:7c81\" \"104.238.181.28\" \"209.209.57.165\"]"}
{"level":"info","time":"2024-12-20T14:45:03-08:00.570","message":"starting DNS server on listener.0: 0.0.0.0:5354"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.573","message":"start checking DNS loop"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.574","message":"skipping external: upstream.0"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.575","message":"end checking DNS loop"}
{"level":"debug","error":"dial udp [fe80::200:5eff:fe00:101]:53: connect: invalid argument","time":"2024-12-20T14:45:03-08:00.577","message":"failed to connect to OS nameserver: fe80::200:5eff:fe00:101"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.578","message":"initialized OS resolver with nameservers: [76.76.2.0:53]"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.650","message":"sending doh3 request to: 209.209.57.165:443"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.727","message":"start hosts file discovery"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.727","message":"start dhcp discovery"}
{"level":"debug","time":"2024-12-20T14:45:03-08:00.732","message":"start arp discovery"}
...

[cuonglm]

@nalabelle ctrld service start won't do magic thing, like changing DNS, automatic router setup ...

Could you please try running this command:

ctrld start --log /tmp/ctrld.log -vv

and see if it worked for you.