Ok, I found how to do this, but what will happen if I have a specific statement in the dhcpd.conf for the empeg under the 192.168.0.x ip range? I'd like to keep that for when it's elsewhere in the house so that it has it's static DHCP IP. And have a second entry when it is hanging off that 3rd NIC. I can't find anything in the man page to say that it's either smart enough to figure out the interfaces based on the IP ranges and what card has what subnet, or if there is a parameter to define a subnet setting to one interface.