I have a PC which acts as a server for Windows File History running on all the Windows machines on my LAN (i.e., the clients all target a share on the server for storing their backups).
Rather than have the server run 24/7, I'd like to have it wake up on demand (I'm using File History's default every hour timetable).
I also have a Raspberry Pi running on the network as a DNS server. It also currently uses xinetd to watch for certain UDP packets to wake up a SageTV media server.
Is there a way to configure xinetd to watch for, say, destination unreachable packets related to a sleeping File History server?