I'm trying to add a computer to a DHCP reservation and when I do it gives me the message "The specified IP address or hardware address is being used by another client." I checked the IP and it can't be pinged and I've also tried reserving the mac to a different IP and received the same response. Is there a quick way I can find what IP reservation the mac address is connected to?
Note: using Server 2003 on a XP/Vista environment. All IP address that are not used are reserved with a dummy MAC address and when a computer is added to the network the MAC address is added to a unused IP that's been reserved with a fake mac.