Im using TrueNAS, and I've been trying to setup pihole, and i think i got it working but whene i set pihole's ip as DNS on my computer every website stops loading.
I ran Pi-Hole on my TrueNAS Scale server for a little bit without issue .. It's IP was the same as my server's IP. Is that the address you are using?
I run Pi-Hole on 2 different Raspberry Pi Zero Ws with POE Ethernet hats now for DNS
I've typed the ip that is in Primary adress IP. Mayby thats whats wrong.
If it's the default Docker 172.16.x.x IP Address then you are probably doing it wrong and need to use your TrueNAS Scale Server IP Address that's probably something like 192.168.x.x 