Configure Pi-hole on dual interfaces for network

[OmegaRabbits]

Hello all,

I've been looking and looking something fierce and it's time to ask for some assistance. I love the idea of running pi-hole, but I would like to run it on a system with multiple network interfaces that point to different vlans. Example is: the system I have running has 2x Realtek RTL8111/8168/8411 controller's. One interface is set to point at my internal vlan (192.168.1.x) and the other interface is setup to point at my guest vlan (10.0.0.x). I would like if possible to understand if it is at all possible without getting into conditional forwarding at this time if I can some how get Pi-Hole to see both interfaces, then I could point my UDMP's DNS correctly for both vlan's to the unit.

Any thoughts or input about this would be very much appreciated!

Thank you!

[RonV42]

You should be able to by setting the Permit all origins on your pi-hole:

Another method I am using is that I set a "forwarding" rule from guest to the IoT nework where my Pi-Hole sits. I don't have a UDM but this is what I put into Untangle. Port 53 requests can go to any network and in DHCP I setup the Pi-Hole on the Iot network as the DNS for hosts that get dynamic addresses. The last rule blocks everything else.