Ability to report on interface state

[HunnyPuns]

Checking interface state for network adapters. Whether they're up or down.

Doesn't make a whole lot of sense on the surface, because if the interface is down, then you can't monitor the system. Duh. BUT! If you have a system with multiple network interfaces, you may be monitoring from one NIC, but you want to make sure that the other NIC is available as well.

Currently it can kind of be done in the sense that you could monitor something like the number of packets received on an interface, and then if it ever drops to 0, you know there's a problem.