I just recently flashed my Cisco Meraki MR18 AP, but I'm having some weird networking issues when I have it connected. I am getting DNS errors when I connect to that network, which I believe are being caused by my raspberry pi running a Pi-Hole DNS and DHCP server. The system works perfectly wirelessly and wired when the Meraki isn't connected, but when I wire it in, I can only use the wired internet (it appears to even cause my other wifi SSIDs to begin getting DNS errors. The pi-hole is wired directly to the router, as is the AP. So I basically have 2 questions:

1) How the heck to I find the IP address of the MR18? Currently I can only get into LEDE when I wire directly to it. When I look at my router, I do not see the MAC or the name of the AP anywhere as a connected device, and same for the pi-hole DHCP lease section. I should note that I was never able to find it in either of these before, but I believe I'm supposed to be able to.
2) What could be causing the DNS errors when the Meraki is connected?

Thanks for any help you can provide.

Is the Meraki acting as a DHCP server?

Interesting thought. I didn't check. I suppose I assumed that since it was in AP mode, it wouldn't be trying to act as a DHCP server. I definitely didn't personally set it as a DHCP server. I can't check at the moment, but I'll check tomorrow.

Perfect. Had to browse around a bit, but ultimately found Network -> Interfaces -> Edit, and changed the protocol from Static to DHCP client, and now it's getting an IP address from the Pi-Hole and not taking my entire wireless network down haha. Thanks a lot!