We are having a strange behavior on our company network. From time to time a IP that is given out by the DHCP server "stops" working externally, internal network access is working and DNS lockups is working but the computer with that IP is unable to access the internet.
The only workaround that I have found is to put the specific IP adress in the exclusion list of the DHCP server and renew the IP on the PC, then everything works again.
I thought this behavior would go away when I reinstalled the DC but NO, it just happened again.
Does anyone have a clue to what could cause this, I'll list our environment below.
DC Windows Server2008 R2 Firewall Level1 FBR-4000 PC client Windows 7