RAX120 Firmware 1.0.1.122 (27 APR 2020)

I just don't even know how to deal with Netgear firmware updates anymore.

First, some background. After the DNS mess with 114 and 118, I had moved both DNS and DHCP to a Pi-Hole on my network because the router wasn't even forwarding DNS at all so I needed a DHCP server giving clients a DNS server that actually works.

Enter this firmware. Immediately after my router comes back up, my devices are all complaining that there's no internet. Okay. Ping to gateway - check. Ping to 8.8.8.8 - check. Routing is fine. DNS lookup? Failing. I can't ping my Pi-Hole anymore. Weird. I spend the next hour looking over the Pi-Hole - Static IP, subnet, gateway, DNS - all good - all exactly as it was before. It's 1:30am, I'm tired let's just set the router and see if it can handle DHCP and DNS for the night. As soon as the router has DHCP enabled again, suddenly I can ping and connect to my Pi-Hole via it's IP address. What? Turn DHCP on the router off, Pi-Hole goes away again. I can connect to every other device on my network but that Pi-Hole. It even shows in the router's Attached Devices list. Why does all traffic to it get blocked when DHCP is turned off on the router?