RT-AC68U behind other internet router

Hi,

I'm having some trouble with my setup and are reaching out for help.

Maybe some of you know?

My setup. I have a Huawei B818-260 router that has a 4G internet connection, the gateway address of this router is 192.168.1.1. Into the LAN-port of this router I have my RT-AC68U router.

B818 assigns RT-AC68U 192.168.1.100 IP (static)
Behind RT-AC68U i have all my devices. The gateway address of RT-AC68U is 10.0.0.1. From one of my devices connected to RT-AC68U, when i navigate to my public...

RT-AC68U behind other internet router