Ignore VPN adapters for MAC addresses

Hello!

The MAC address as shown in Control for a given guest machine should not be obtained from VPN adapters. I think it makes more sense for these adapters to be ignored. Perhaps the page could display all MAC addresses instead of just one, and administrators could blacklist certain MACs?

Right now, I have 33 machines all showing up with the MAC address 00:05:9A:3C:7A:00, which means they were most recently connected to Control while connected to our Cisco AnyConnect VPN.