ISP does not check MAC, but I've entered the MAC used by EnterNet 300. EnterNet 300 is not currently loaded on any of my systems. My ISP always assigns the same IP address to my system. Basic, with DHCP disabled. When hung, the Linksys status page continues to report an active connection.
Disconnects require about three seconds.
Behavior is the same with any of the three connected computers. By the way, when I am connected, the TweaksTest gives my system an excellent rating. Power-cycling the unit is NOT an option usually. You'd be paranoid too, if everyone were out to get you. In response to Linksys Tech2 Give the BEFn2pPS4 an MTU setting option.