We recently switched out our PDC and the IP address changed. The old IP is not being used for anything. We have many VPN users and there are quite a few ARP requests from our firewall address to the old PDC due to the VPN connections. There are about 30 in a minute. Can I assign the old IP address as well to the new PDC? In the properties of the adapter in the IP settings on the advanced tab where it says Interface Metric what does that mean?