DNS Server Issue

I have a DNS server on my network that I run everything through. It is a PiHole running in a Docker container for anyone interested.

The Interceptor should have picked up this DNS server when it got its DHCP, but it seemed to have not. So I used resolvectl to manually set it, and it still isn't working. Except it is when I use resolvectl to resolve it.

admin@interceptor:~$ resolvectl query mos-eisley
mos-eisley: 192.168.1.11                       -- link: wan
            (mos-eisley.localdomain)

-- Information acquired via protocol DNS in 28.9ms.
-- Data is authenticated: no
admin@interceptor:~$
admin@interceptor:~$ ping mos-eisely
ping: mos-eisely: Name or service not known

192.168.1.11 is the correct address for my mos-eisley server, but I can't ping it and nslookup won't find it either unless I manually give it the correct server.

Anyone know what's gone wrong? I'd prefer the DNS get picked up from DHCP, but my home network is rather static so if I have to manually set it that would work too.