Hi, I am running DHCP (also with DDNS) on Fedora Core 2. I am getting some instances of blank hostnames getting an IP address... I want to prevent those people from renewing their IP. So I actually have a 2 questions; 1- Can I prevent blank host names from getting a DHCP address? (I know I can deny unknown hosts, but that would require me to enter in all my known hosts manually, somethign I do not want to do, since there is over 250 of them) 2- Since I know their MAC addresses is there a way to deny them a IP from DHCP? Thanks!
