ACF-dhcp is missing feature on howto configure which nics dhcpd should listen on
You need some way to configure /etc/conf.d/dhcpd and set the variable DHCPD_IFACE in order to specify which nic’s dhcpd should listen on.
(from redmine: issue id 107, created on 2009-07-30, closed on 2009-12-23)