How do I go about creating a mapping to a hostname for machines connected to my network. For instance, a device logs onto my network and the system leases them an ip addy, say "192.168.2.199". How do I map that to a hostname, say, "foo.mynetwork". The lease expires and next time the DGCP leases the addy "192.168.2.195" and I want this new addy to map to the same hostname. This way given device can be accesses via hostname regardless of the leased address. i tried manipulating the config files but no luck. Any ideas ?