I've been using PiHole with several VLANs for over a year, but want to see if what I'm doing is a best practice or if others have suggestions to improve.
Right now, I have a VLAN interface on my pihole for each VLAN and have configured each VLAN to use its respective PiHole VLAN interface as its nameserver. Obviously adding / removing VLANs becomes cumbersome, plus it seems that (at least in the Ubiquiti UniFi UI) the "primary IP address of the PiHole rotates from time to time to a different VLAN IP of the PiHole.
My ultimate question is - is it a better practice to have the PiHole run on, just for sake of example, the management VLAN, only have one "interface" configured on the PiHole, and via firewall rules allow DNS traffic from all VLANs to the PiHole on port 53? If I do this, do I lose anything (hostname resolution, etc.)?
Or, is my current configuration considered a best practice?