Are you using Microsoft Windows Server utilities and snap-ins with the Microsoft Management Console and have the DHCP Service running? If thats your setup; right click and goto properties for the service; and on the General tab, select Enable DHCP audit logging, and then click OK. If it was already enabled; then you can retrieve your logs. But naturally, the MS Event Log would show any IP requests for the incoming and outgoing translations (assigning IP's to nodes based on the metric you chose-- mask ID, VLAN ID, etc. etc, and it would naturally show the UNC name of the machine that it was sent to (not just the IP). Goto start, Run..., and type 'eventvwr.msc' without the quotes to bring up your event log.
~Savoy Blue/Merlin~