#10 server crash with remhost from unknown node

[James Hanley]

dmucs crashes when remhost is called from a node not know to the server.

[Tue Sep 2 13:06:47 2008] Hosts Served: 0 Max/Avail: 0/0
machname 192.168.33.16, state down, dprop ''
terminate called after throwing an instance of 'DmucsHostNotFound'
what(): 17DmucsHostNotFound

This can allow users to accidentally or maliciously disable the server.