DHCP Not Updating DNS
The DHCP server setting "Register DHCP leases in DNS forwarder" does register the host in the DNS server. However, if the server gets a new IP Address from the DHCP server the DHCP server does not update the DNS records correctly. It either adds the second IP address to the DNS record so now the same name returns two IP addresses or it doesn't update DNS records at all. The DHCP lease page shows the correct name to IP records but the DNS lookup returns the wrong values. I am not sure if this has anything to do with it, but the workstations in question are virtual machines that come out of a saved state.