Help with isc-dhcp dhclient from port collection

[fbsd]

I installed the isc-dhcp-client port.
I have this in my rc.conf

dhcp_program="/usr/local/sbin/dhclient"
dhcp_flags="-q"
ifconfig_dc0="DHCP"

I get these error messages over and over.
Have to reboot in single user mode to edit rc.conf to fix.

 Can't bind to dhcp address: Address already in use
 Please make sure there is no other dhcp server
 running and that there's no entry for dhcp or
 bootp in /etc/inetd.conf.   Also make sure you
 are not running HP JetAdmin software, which
 includes a bootp server.

I have no other dhcp server running and there's no entry for dhcp or
 bootp in /etc/inetd.conf.

Is there something else that has to be configured to get this to
work?