Differentiate between devices

[jasonmf]

Is there a way to differentiate between devices?

I'm developing an OBS overlay to display the currently playing track in each channel. On the Prime 4(+) I get messages with state names /Engine/Deck[1-4]/.*. so from that device I can easily differentiate the four channels. From a pair of SC5000 I get messages from them both and they're each sending /Engine/Deck[12]/.*, so purely parsing the state name isn't enough.

For a given session, I can differentiate between devices by IP address, but between sessions the devices may get different addresses via DHCP. I'd like to get some durable identifier that I can combine with the Deck. portion of the name to keep the channel ordering consistent in the overlay. I can potentially use ARP to get the MAC address associated with the device's IP and use that, but it would be nice if there were something directly in StagelinQ.