- Add ipfw_nat to the list of required modules if "firewall_nat_enable"

is set and "natd_enable" is NOT set;

- Accept and pass firewall type to the external firewall script.

Submitted by:		Yuri Kurenkov < y -dot- kurenkov -at- init -dot- ru >
MFC after:		3 days
No response from:	freebsd-rc

etc/rc.d/ipfw

@@ -23,10 +23,20 @@ ipfw_prestart()
 	if checkyesno dummynet_enable; then
 		required_modules="$required_modules dummynet"
 	fi
+
+	if checkyesno firewall_nat_enable; then
+		if ! checkyesno natd_enable; then
+			required_modules="$required_modules ipfw_nat"
+		fi
+	fi 
 }
 
 ipfw_start()
 {
+	local   _firewall_type
+
+	_firewall_type=$1 
+
 	# set the firewall rules script if none was specified
 	[ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
 
@@ -34,7 +44,7 @@ ipfw_start()
 		if [ -f /etc/rc.d/natd ] ; then
 			/etc/rc.d/natd quietstart
 		fi
-		/bin/sh "${firewall_script}"
+		/bin/sh "${firewall_script}" "${_firewall_type}"
 		echo 'Firewall rules loaded.'
 	elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then
 		echo 'Warning: kernel has firewall functionality, but' \
@@ -67,4 +77,4 @@ ipfw_stop()
 }
 
 load_rc_config $name
-run_rc_command "$1"
+run_rc_command $*