GL-AR150 Disable DHCP?

Hello,

My GL-AR150 is set to bridged WiFi mode so connections to the router will get a 192.168.0.xxx address and that way my DLNA server works nicely on my TV. However… The device is running a DHCP server and sometimes my devices will be given a 192.168.8.xxx address and this has been supplied from the GL-AR150 and this causes no Internet connectivity.

I have looked for a way to disable the DHCP in the panel but I can’t see anything? Any suggestions?