http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network-dhcp.html Section 30.5.4 dhcp_program and dhcp_flags should read dhclient_program and dhclient_flags as per the rc.conf man page: http://www.freebsd.org/cgi/man.cgi?query=rc.conf&apropos=0&sektion=0&manpath=FreeBSD+7.0-RELEASE&format=html I've tested and confirmed this. Thanks.