AT&T BGW210 (Passthrough enabled & WiFi turned off) NETGEAR Orbi 970 (Providing WiFi and all IP addresses for the entire network) NETGEAR switch
Orbi router's IP is 10.1.2.3
Brume 2 Default Gateway: LAN IP 192.168.8.1
Brume 2 IP assigned from Orbi router 10.1.2.10
When I go to change the Brume 2 LAN IP address from 192.168.8.1 to 10.1.2.5 I get the error message from the Brume 2 "LAN subnet is in conflict with the WAN subnet, Please Change LAN Subnet to a different address"
I can only connect to the admin panel if I directly plug into the LAN on the Brume 2 which gives me an IPv4 address of 192.168.8.166
Enabling the Drop-in Gateway feature doesn't mean you have to use it as a Drop-in Gateway. Even though, if you just don't like it, there's no easy way to do that on the GL UI.
I think the reason you don't like that feature is just because you didn't understand the feature yet. There's no downside if you just do as I said.
I don't know why are you asking, if you're going to refuse the solution without any reasonable reason. But I'll respect your decision. Good luck!