Add configuration for a FAITH IPv6-to-IPv4 TCP translator.

To use a FAITH actually, you also need faithd(8) setup.
Please consult faithd(8) manpage.

3 files changed, 61 insertions, 0 deletions

diff --git a/etc/defaults/rc.conf b/etc/defaults/rc.conf
index e1be4ba..672765f 100644
--- a/etc/defaults/rc.conf
+++ b/etc/defaults/rc.conf
@@ -265,6 +265,9 @@ stf_interface_ipv4plen="0"	# Prefix length for 6to4 IPv4 addr,
 stf_interface_ipv6_ifid="0:0:0:1"	# IPv6 interface id for stf0.
 				# If you like, you can set "AUTO" for this.
 stf_interface_ipv6_slaid="0000"	# IPv6 Site Level Aggregator for stf0
+ipv6_faith_prefix="NO"		# Set faith prefix to enable a FAITH
+				# IPv6-to-IPv4 TCP translator.  You also need
+				# faithd(8) setup.
 ipv6_ipv4mapping="YES"		# Leave empty to disable IPv4 mapped IPv6 addr
 				# communication. (like ::ffff:a.b.c.d)
 ipv6_firewall_enable="NO"	# Set to YES to enable IPv6 firewall
diff --git a/etc/rc.d/network_ipv6 b/etc/rc.d/network_ipv6
index a46194f..aa8d6a2 100644
--- a/etc/rc.d/network_ipv6
+++ b/etc/rc.d/network_ipv6
@@ -161,6 +161,9 @@ network6_pass1() {
 	# setup static routes
 	network6_static_routes_setup
 
+	# setup faith
+	network6_faith_setup
+
 	case ${ipv6_gateway_enable} in
 	[Yy][Ee][Ss])
 		# ipv6_router
@@ -389,6 +392,32 @@ network6_static_routes_setup() {
 	esac
 }
 
+network6_faith_setup() {
+	case ${ipv6_faith_prefix} in
+	[Nn][Oo] | '')
+		;;
+	*)
+		sysctl -w net.inet6.ip6.keepfaith=1
+		ifconfig faith0 up
+		for prefix in ${ipv6_faith_prefix}; do
+			prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
+			case ${prefixlen} in
+			'')
+				prefixlen=96
+				;;
+			*)
+				prefix=`expr "${prefix}" : \
+					     "\(.*\)/${prefixlen}"`
+				;;
+			esac
+			route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
+			route change -inet6 ${prefix} -prefixlen ${prefixlen} \
+				-ifp faith0
+		done
+		;;
+	esac
+}
+
 network6_default_interface_setup() {
 	# Choose IPv6 default interface if it is not clearly specified.
 	case ${ipv6_default_interface} in
diff --git a/etc/rc.network6 b/etc/rc.network6
index a46194f..aa8d6a2 100644
--- a/etc/rc.network6
+++ b/etc/rc.network6
@@ -161,6 +161,9 @@ network6_pass1() {
 	# setup static routes
 	network6_static_routes_setup
 
+	# setup faith
+	network6_faith_setup
+
 	case ${ipv6_gateway_enable} in
 	[Yy][Ee][Ss])
 		# ipv6_router
@@ -389,6 +392,32 @@ network6_static_routes_setup() {
 	esac
 }
 
+network6_faith_setup() {
+	case ${ipv6_faith_prefix} in
+	[Nn][Oo] | '')
+		;;
+	*)
+		sysctl -w net.inet6.ip6.keepfaith=1
+		ifconfig faith0 up
+		for prefix in ${ipv6_faith_prefix}; do
+			prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
+			case ${prefixlen} in
+			'')
+				prefixlen=96
+				;;
+			*)
+				prefix=`expr "${prefix}" : \
+					     "\(.*\)/${prefixlen}"`
+				;;
+			esac
+			route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
+			route change -inet6 ${prefix} -prefixlen ${prefixlen} \
+				-ifp faith0
+		done
+		;;
+	esac
+}
+
 network6_default_interface_setup() {
 	# Choose IPv6 default interface if it is not clearly specified.
 	case ${ipv6_default_interface} in