I bought a mini router Ar300M (a truly exceptional product!) to use as WISP repeater connected to a public wireless network. The main router has an IP address range 192.168.1.xxx, mini router instead uses the 192.168.8.xxx range. Well, everything works perfectly, but if I check the devices connected to my LAN in the AR300M router web UI I find sometimes in addition to my devices (with IP address 192.168.8.xxx) and the main router (with IP address 192.168 .1.1) another unknown device with IP address 192.168.1.xxx, that I guess it should not be there. How do I avoid this?
Thanx in advance
P.S.: For now, waiting for some suggestion, I disabled Wan access port and added unknown device to MAC filter blacklist.