The static IP was set up using nmtui.Lots of back and forth about the setup process here: Setting up Pi-Hole on a Virgin Vincent modem-router - #3 by PantsMasterson
hostnamectl:
Operating System: Debian GNU/Linux 12 (bookworm)
Kernel: Linux 6.12.20+rpt-rpi-v8
Architecture: arm64
I appreciate your concern about the fallback DNS address, but since this is killing the entire Internet, it's doing a great job blocking ads right now. If we can get this up and running, should I just use the static IP 192.168.2.19 for both DNS entries on the router?
Presently, I've re-enabled the Internet by resetting DNS on the router to 8.8.8.8 and 1.1.1.1 as mentioned above, The current DNS servers configured through DHCP are fec0:0:0:ffff::1%1; 2%1; 3%1.
If you need to know what they are when I set the router DNS back to the pi-hole IP address, I can look that up when I try again, but understanding why this is relevant might be helpful.