I have a DHCP server that has many scopes. I have scopes that start 172.17.X.X and the last scope in that range has DHCP/BOOTP leases with a MAC address of 3137322e31372e. If I delete all of the bogus leases and then reconcile the scope, the bogus leases come back. I can delete them again and reconcile again but the bogus addresses come back. Eventually they fill up the scope and there are no IP addresses left to be given out. This only happens to one scope and it is the last one in the 172.17 range. Any ideas? We recently moved the dhcp service to a new server but this issue was happening on the old server as well.