Did you set DHCP=server in the respective ifcfg-xxxx files under /etc/sysconfig/nic ?
I have a Devil machine with 3 subnets,
192.168.2.0 to ISP modem eth0
192.168.0.0 office eth1
192.168.1.0 school eth2
At present the DHCP server is only serving the school network, set up via the devil interface.
I would like, however, the DHCP server to server the office subnet too. The interface does not allow for the setting up of two subnets, so I edited the /etc/dhcpd.conf by adding the subnet in question, as well as the I office /etc/sysconfig/nic/office-eth by setting the DHCP entry on server too.
Strangely enough it does not seem to be working. I should be grateful if you could provide any help at all.