I found some posts about Guest Network Pro and Network tabs and the rename, but the firmware just before this upgrade didn't seem to have those. I'm on
3.0.0.4.388_24403 which does not have those options at all. I don't run Merlin on this router although I may have to. I usually don't switch until ASUS breaks something like they did with my AX11000... Remote management ACLs make it stay in a reboot loop, support doesn't care, of course that Wizard's firmware doesn't do that.
Anyway, regarding my DNS problem. ASUS' new firmware pushes the LAN interface for the DNS server instead of the VPN interface and then firewalls it off, and with the block-outside-dns custom option added, this isn't good because it cuts off DNS for the client completely. (The reason is to force All DNS through the VPN for filtering with a piHole). The router forwards it to a DMZ pihole (yes, I know I could just hand-out the pihole address with the DHCP option, but this doesn't work really for the VPN settings) As long as DNS Director can forward back internally, I could move it back into the network vs just outside it.
I like to be complicated