Strange Device listed On My Bebox
When you check your device list you will find a device listed with a ip address, that is not yours.
Unknown-00-03-fa-a9-d7-4a ip address: 126.96.36.199
This is in fact the BE gateway through which your router uses to send traffic to the internet.
This is normal, and nothing to worry about.
Removing it from the routers interface will result in loss of connectivity to the internet until you restart the BEBox.