Brume 2 or Beryl AX3000 as an (always-on low power) AdGuard home server

I have my GL-MV1000W running as a standalone AdGuardHome DNS server and not as my main router. When I get around to it, my intention is to replace it with my more powerful GL-MT2500 Brume 2.

You can actually set up a GL.iNet router as a LAN-only server, in Router mode without connecting the WAN port and only connecting the Ethernet LAN port:

Make the appropriate adjustments to the IP addresses in the procedure and turn off wifi on the GL-AX3000 Beryl AX, then set up AdGuardHome.

I do not work for and I do not have formal association with GL.iNet