Will the deauth get sent to it instead of the phone, or sent to both? Too lazy to do that. Just curious what would happen. Might have to connect it to the AP, and that wouldn't work very well, two devices with the same MAC address. They'd be sharing an IP.

If somebody is sending deauth to your device(s), you could setup a fake device with their MAC address. Oh wait, it's the same as your AP. That would be kind of pointless.