Aside from redundancy, currently running three different Dante cards with three different firmware versions with 2 different levels of multicasting functionality.
T112/Dual:iDR32-iDR48/Dante
MacBook Pro/iDR16/Dante
T112/iDR48/Dante
T112/iDR32
Mac Mini/Dante (Backing Tracks)
Mac Pro/Dante (Multitracking)
2 iPads w/ MixPad