I have a server that has an IP address that was static but somehow changed after reboot was done on it. The address was reserved on another DHCP server to prevent it from being used. I am finding when I change the IP back to the static address it had, I get an IP conflict error showing up. I pinged the IP address on the LAN and I confirmed it is not being used by another device. I was thinking DHCP is probably preventing me from using that address at this point so I tried disabling DHCP temporarily so I could then change that server IP back to it's static but I am still getting the conflict error.
Any ideas what is causing this?