When I get a "Received unexpected delcine packet identifying address
xx.xx.xx.xx or address failed a ping test" I see nothing in my log file,
but when I open the dhcp console, I see that the address last used time
as the same time as the message on the console. However, the dhcp
console shows no MAC address or identifier. I can ping the address, so
it appears that someone actually got the address.

Any advice or information on what might be happening would be appreciated.