I've come across a a weird situation where DHCP reservations in Windows 2008 DHCP server mysteriously disappear. I know for certain the reservation was setup properly because I set it up myself. Then we had to send a tech onsite to diagnose a server down issue and it turned out the IP that was previously reserved was handed out by the server causing duplicate IP issue.
Does anyone know what causes this or what logs I can look at that would help me determine the cause?
Thank you in advance.