Hog 4 backup

Hi,
I have a set up with 2 Hog 4, set with the same ID number server and DP8K, so they can run in full tracking mode. One DP8K is running and the other is Idle, in case of failure of the active DP8k I'd like the other to take over . The dmx is feed via Artnet. Can this be done in this case ? because when I kill the active DP8k the other one stay in Idle state, there's no automic switch.
Thanx