FreeBSD: rc.conf para bridge

hostname="Serveur"

ipv6_enable="NO"
cloned_interfaces="bridge0"
ifconfig_bridge0="addm em1 addm em2 addm bge0 addm bge1 up"
ifconfig_bridge0_alias0="inet 10.254.0.0/8"
ifconfig_em0="inet 192.168.0.254/24"
defaultrouter="192.168.0.1"
ifconfig_em1="up"
ifconfig_em2="up"
ifconfig_bge0="up"
ifconfig_bge1="up"

gateway_enable="YES"
firewall_enable="YES"
firewall_script="/etc/firewall.rules"
firewall_logging="YES"
natd_enable="YES"
natd_interface="em0"
natd_flags="-dynamic -m -s"

keymap="fr.iso.acc"
sshd_enable="YES"
ntpd_enable="YES"
named_enable="YES"

FONTE: http://forums.freebsd.org/showthread.php?p=145315#post145315