I'm trying to set up a Pi Hole to run inside a LXC container on Ubuntu 22.04.
So far I successfully initialized LXC, created the container and installed Pi Hole. The host IP is 192.168.153.2. The container is running on a bridge network with the IP 10.123.145.237.
I then went on to set up a port forward to expose the DNS server of Pi Hole.
$ lxc network forward create lxdbr0 192.168.153.2
$ lxc network forward port add lxdbr0 192.168.153.2 udp 53 10.123.145.237 53
$ lxc network forward port add lxdbr0 192.168.153.2 tcp 53 10.123.145.237 53
My issue is that the DNS port does not get exposed, as expected. Checking the open ports I see the following:
foo@lol:~$ sudo lsof -i -P -n
[sudo] password for foo:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
systemd-n 752 systemd-network 18u IPv4 32403 0t0 UDP 192.168.153.2:68
systemd-r 754 systemd-resolve 13u IPv4 28202 0t0 UDP 127.0.0.53:53
systemd-r 754 systemd-resolve 14u IPv4 28203 0t0 TCP 127.0.0.53:53 (LISTEN)
sshd 842 root 3u IPv4 24959 0t0 TCP *:22 (LISTEN)
sshd 842 root 4u IPv6 24961 0t0 TCP *:22 (LISTEN)
sshd 974 root 4u IPv4 26122 0t0 TCP 192.168.153.2:22->192.168.153.248:55434 (ESTABLISHED)
sshd 1136 foo 4u IPv4 26122 0t0 TCP 192.168.153.2:22->192.168.153.248:55434 (ESTABLISHED)
dnsmasq 2360 lxd 4u IPv4 40171 0t0 UDP *:67
dnsmasq 2360 lxd 6u IPv6 40173 0t0 UDP *:547
dnsmasq 2360 lxd 8u IPv4 40176 0t0 UDP 10.123.145.1:53
dnsmasq 2360 lxd 9u IPv4 40177 0t0 TCP 10.123.145.1:53 (LISTEN)
dnsmasq 2360 lxd 10u IPv6 40178 0t0 UDP [fd42:5a75:2593:62b9::1]:53
dnsmasq 2360 lxd 11u IPv6 40179 0t0 TCP [fd42:5a75:2593:62b9::1]:53 (LISTEN)
I'd be very thankful for some advice, how to solve this!
