Dish Hopper Ethernet MAC keeps changing

Hi there, I realize that this isn’t completely a HA configuration question but I’m hoping that maybe someone else here has seen this.

I just configured the Netgear device tracking. Finally got it working, turns out I had to include the port in the config info. Anyway, I now have a number of devices I’m tracking but I have a Dish Network Hopper connected via Ethernet and at least once a day a new Hopper shows up in the known_devices.yaml. Each time with a different MAC address.

Anybody have any idea what’s going on here?

Mick