GL-MT300N-V2 MiniRouter was delivered with firmware version 2-2.264. We did not change the firmware. WiFi is disabled (via GLI UI) since we use the MiniRouter as Ethernet router only. WAN port is connected to another network (192.168.178.x, uplink) and LAN port (192.168.8.x) is connected to a switch. Several devices in the network are connected to the switch, MiniRouter provides IP addresses via DHCP to these devices (192.168.8.x). This setting works fine for a while.
After ca. three days, MiniRouter stopps working as a router and works as a switch. Thus, all the devices connected via switch to MiniRouter’s LAN (192.168.8.x) port gets IP addresses from the WAN network (192.168.178.x).
In this condition, even a reboot does not recover router functionality of the MiniRouter (works permanently as a switch).
Several resets are needed to get the router into its initial condition working as a router.
We are very thankful for any hint on how to solve this issue and how to use the MiniRouter configured as router (not as switch) permanently.