packages: sort network related packages into package/network/

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33688 3c298f89-4303-0410-b956-a3cf2f4a3e73

8 files changed, 649 insertions, 0 deletions

diff --git a/package/network/ipv6/6in4/Makefile b/package/network/ipv6/6in4/Makefile
new file mode 100644
index 000000000..fdab29086
--- /dev/null
+++ b/package/network/ipv6/6in4/Makefile
@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6in4
+PKG_VERSION:=11
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6in4
+  SECTION:=ipv6
+  CATEGORY:=IPv6
+  DEPENDS:=+kmod-ipv6 +kmod-sit
+  TITLE:=IPv6-in-IPv4 configuration support
+  MAINTAINER:=Jo-Philipp Wich <xm@subsignal.org>
+  PKGARCH:=all
+endef
+
+define Package/6in4/description
+Provides support for 6in4 tunnels in /etc/config/network.
+Refer to http://wiki.openwrt.org/doc/uci/network for
+configuration details.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/6in4/install
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6in4.sh $(1)/lib/netifd/proto/6in4.sh
+endef
+
+$(eval $(call BuildPackage,6in4))
diff --git a/package/network/ipv6/6in4/files/6in4.sh b/package/network/ipv6/6in4/files/6in4.sh
new file mode 100755
index 000000000..71bc68940
--- /dev/null
+++ b/package/network/ipv6/6in4/files/6in4.sh
@@ -0,0 +1,90 @@
+#!/bin/sh
+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_6in4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6in4-$cfg"
+
+	local mtu ttl ipaddr peeraddr ip6addr tunnelid username password
+	json_get_vars mtu ttl ipaddr peeraddr ip6addr tunnelid username password
+
+	[ -z "$ip6addr" -o -z "$peeraddr" ] && {
+		proto_notify_error "$cfg" "MISSING_ADDRESS"
+		proto_block_restart "$cfg"
+		return
+	}
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	[ -z "$ipaddr" ] && {
+		local wanif
+		if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+	}
+
+	local local6="${ip6addr%%/*}"
+	local mask6="${ip6addr##*/}"
+	[[ "$local6" = "$mask6" ]] && mask6=
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_address "$local6" "$mask6"
+	proto_add_ipv6_route "::" 0
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	json_add_string local "$ipaddr"
+	json_add_string remote "$peeraddr"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -n "$tunnelid" -a -n "$username" -a -n "$password" ] && {
+		[ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || {
+			password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
+		}
+
+		local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&apikey=$username&pass=$password&tid=$tunnelid"
+		local try=0
+		local max=3
+
+		while [ $((++try)) -le $max ]; do
+			wget -qO/dev/null "$url" 2>/dev/null && break
+			sleep 1
+		done
+	}
+}
+
+proto_6in4_teardown() {
+	local cfg="$1"
+}
+
+proto_6in4_init_config() {
+	no_device=1             
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_string "ip6addr"
+	proto_config_add_string "peeraddr"
+	proto_config_add_string "tunnelid"
+	proto_config_add_string "username"
+	proto_config_add_string "password"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6in4
+}
diff --git a/package/network/ipv6/6rd/Makefile b/package/network/ipv6/6rd/Makefile
new file mode 100644
index 000000000..3d4549674
--- /dev/null
+++ b/package/network/ipv6/6rd/Makefile
@@ -0,0 +1,53 @@
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6rd
+PKG_VERSION:=2
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6rd
+  SECTION:=ipv6
+  CATEGORY:=IPv6
+  DEPENDS:=+kmod-ipv6 +kmod-sit
+  TITLE:=6rd configuration support
+  MAINTAINER:=Stéphan Kochen <stephan@kochen.nl>
+  PKGARCH:=all
+endef
+
+define Package/6rd/description
+Provides support for 6rd tunnels in /etc/config/network.
+Refer to http://wiki.openwrt.org/doc/uci/network for
+configuration details.
+endef
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+	$(MAKE) -C $(PKG_BUILD_DIR) \
+		CC="$(TARGET_CC)" \
+		CFLAGS="$(TARGET_CFLAGS) -Wall" \
+		LDFLAGS="$(TARGET_LDFLAGS)"
+endef
+
+define Package/6rd/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/6rdcalc $(1)/usr/sbin/
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6rd.sh $(1)/lib/netifd/proto/6rd.sh
+endef
+
+$(eval $(call BuildPackage,6rd))
diff --git a/package/network/ipv6/6rd/files/6rd.sh b/package/network/ipv6/6rd/files/6rd.sh
new file mode 100644
index 000000000..59c3169b3
--- /dev/null
+++ b/package/network/ipv6/6rd/files/6rd.sh
@@ -0,0 +1,80 @@
+#!/bin/sh
+# 6rd.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_6rd_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6rd-$cfg"
+
+	local mtu ttl ipaddr peeraddr ip6prefix ip6prefixlen ip4prefixlen
+	json_get_vars mtu ttl ipaddr peeraddr ip6prefix ip6prefixlen ip4prefixlen
+
+	[ -z "$ip6prefix" -o -z "$peeraddr" ] && {
+		proto_notify_error "$cfg" "MISSING_ADDRESS"
+		proto_block_restart "$cfg"
+		return
+	}
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	[ -z "$ipaddr" ] && {
+		local wanif
+		if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+	}
+
+	# Determine the relay prefix.
+	local ip4prefixlen="${ip4prefixlen:-0}"
+	local ip4prefix=$(ipcalc.sh "$ipaddr/$ip4prefixlen" | grep NETWORK)
+	ip4prefix="${ip4prefix#NETWORK=}"
+
+	# Determine our IPv6 address.
+	local ip6subnet=$(6rdcalc "$ip6prefix/$ip6prefixlen" "$ipaddr/$ip4prefixlen")
+	local ip6addr="${ip6subnet%%::*}::1"
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_address "$ip6addr" "$ip6prefixlen"
+	proto_add_ipv6_route "::" 0 "::$peeraddr"
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	json_add_string local "$ipaddr"
+	json_add_string 6rd-prefix "$ip6prefix/$ip6prefixlen"
+	json_add_string 6rd-relay-prefix "$ip4prefix/$ip4prefixlen"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+}
+
+proto_6rd_teardown() {
+	local cfg="$1"
+}
+
+proto_6rd_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "ipaddr"
+	proto_config_add_string "peeraddr"
+	proto_config_add_string "ip6prefix"
+	proto_config_add_string "ip6prefixlen"
+	proto_config_add_string "ip4prefixlen"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6rd
+}
diff --git a/package/network/ipv6/6rd/src/6rdcalc.c b/package/network/ipv6/6rd/src/6rdcalc.c
new file mode 100644
index 000000000..56e07d255
--- /dev/null
+++ b/package/network/ipv6/6rd/src/6rdcalc.c
@@ -0,0 +1,126 @@
+/*
+ * Utility used to calculate the 6rd subnet.
+ *
+ * Copyright 2012, Stéphan Kochen <stephan@kochen.nl>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/errno.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+#define INET_PREFIXSTRLEN (INET_ADDRSTRLEN+3)
+#define INET6_PREFIXSTRLEN (INET6_ADDRSTRLEN+4)
+
+static void print_usage()
+{
+	fprintf(stderr, "Usage: 6rdcalc <v6 prefix>/<mask> <v4 address>/<mask>\n");
+	exit(1);
+}
+
+static void print_error()
+{
+	fprintf(stderr, "%s", strerror(errno));
+	exit(1);
+}
+
+static void parse_str(int af, char *str, void *addr, unsigned long *mask)
+{
+	int ret;
+	char *slash;
+
+	/* Split the address at the slash. */
+	if ((slash = strchr(str, '/')) == NULL)
+		print_usage();
+	*slash = '\0';
+
+	/* Parse the address. */
+	if ((ret = inet_pton(af, str, addr)) != 1) {
+		if (ret == 0)
+			print_usage();
+		else
+			print_error();
+	}
+
+	/* Parse the mask. */
+	*mask = strtoul(slash+1, NULL, 10);
+	if ((af == AF_INET  && *mask >  32) ||
+		(af == AF_INET6 && *mask > 128))
+		print_usage();
+}
+
+int main(int argc, const char **argv)
+{
+	char v6str[INET6_PREFIXSTRLEN], v4str[INET_PREFIXSTRLEN];
+	struct in6_addr v6;
+	struct in_addr v4;
+	unsigned long v6it, v4it, mask;
+	unsigned char *byte4, *byte6;
+	unsigned char bit4, bit6;
+
+	/* Check parameters. */
+	if (argc != 3)
+		print_usage();
+
+	/* Parse the v6 address. */
+	strncpy(v6str, argv[1], INET6_PREFIXSTRLEN);
+	v6str[INET6_PREFIXSTRLEN-1] = '\0';
+	parse_str(AF_INET6, v6str, &v6, &v6it);
+
+	/* Parse the v4 address */
+	strncpy(v4str, argv[2], INET_PREFIXSTRLEN);
+	v6str[INET_PREFIXSTRLEN-1] = '\0';
+	parse_str(AF_INET, v4str, &v4, &v4it);
+
+	/* Check if the combined mask is within bounds. */
+	mask = (32 - v4it) + v6it;
+	if (mask > 128)
+		print_usage();
+
+	/* Combine the addresses. */
+	while (v4it < 32) {
+		byte6 = (unsigned char *)(&v6.s6_addr) + (v6it >> 3);
+		byte4 = (unsigned char *)(&v4.s_addr)  + (v4it >> 3);
+		bit6 = 128 >> (v6it & 0x07);
+		bit4 = 128 >> (v4it & 0x07);
+
+		if (*byte4 & bit4)
+			*byte6 |= bit6;
+		else
+			*byte6 &= ~bit6;
+
+		v4it++; v6it++;
+	}
+
+	/* Clear remaining bits. */
+	while (v6it < 128) {
+		byte6 = (unsigned char *)(&v6.s6_addr) + (v6it >> 2);
+		bit6 = 128 >> (v6it & 0x07);
+
+		*byte6 &= ~bit6;
+
+		v6it++;
+	}
+
+	/* Print the subnet prefix. */
+	if (inet_ntop(AF_INET6, &v6, v6str, sizeof(v6str)) == NULL)
+		print_error();
+	printf("%s/%lu\n", v6str, mask);
+	return 0;
+}
diff --git a/package/network/ipv6/6rd/src/Makefile b/package/network/ipv6/6rd/src/Makefile
new file mode 100644
index 000000000..2881d4358
--- /dev/null
+++ b/package/network/ipv6/6rd/src/Makefile
@@ -0,0 +1,7 @@
+all: 6rdcalc
+
+6rdcalc: 6rdcalc.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
+
+clean:
+	rm -f 6rdcalc
diff --git a/package/network/ipv6/6to4/Makefile b/package/network/ipv6/6to4/Makefile
new file mode 100644
index 000000000..f29571d86
--- /dev/null
+++ b/package/network/ipv6/6to4/Makefile
@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6to4
+PKG_VERSION:=11
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6to4
+  SECTION:=ipv6
+  CATEGORY:=IPv6
+  DEPENDS:=+kmod-ipv6 +kmod-sit
+  TITLE:=IPv6-to-IPv4 configuration support
+  MAINTAINER:=Jo-Philipp Wich <xm@subsignal.org>
+  PKGARCH:=all
+endef
+
+define Package/6to4/description
+Provides support for 6to4 tunnels in /etc/config/network.
+Refer to http://wiki.openwrt.org/doc/uci/network for
+configuration details.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/6to4/install
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6to4.sh $(1)/lib/netifd/proto/6to4.sh
+endef
+
+$(eval $(call BuildPackage,6to4))
diff --git a/package/network/ipv6/6to4/files/6to4.sh b/package/network/ipv6/6to4/files/6to4.sh
new file mode 100755
index 000000000..3a616f675
--- /dev/null
+++ b/package/network/ipv6/6to4/files/6to4.sh
@@ -0,0 +1,209 @@
+#!/bin/sh
+# 6to4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+find_6to4_prefix() {
+	local ip4="$1"
+	local oIFS="$IFS"; IFS="."; set -- $ip4; IFS="$oIFS"
+
+	printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
+}
+
+test_6to4_rfc1918()
+{
+	local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS"
+	[ $1 -eq  10 ] && return 0
+	[ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
+	[ $1 -eq 172 ] && [ $2 -ge  16 ] && [ $2 -le  31 ] && return 0
+
+	# RFC 6598
+	[ $1 -eq 100 ] && [ $2 -ge  64 ] && [ $2 -le 127 ] && return 0
+
+	return 1
+}
+
+set_6to4_radvd_interface() {
+	local cfgid="$1"
+	local lanif="${2:-lan}"
+	local ifmtu="${3:-1280}"
+	local ifsection=""
+
+	find_ifsection() {
+		local net
+		local cfg="$1"
+		config_get net "$cfg" interface
+
+		[ "$net" = "$lanif" ] && {
+			ifsection="$cfg"
+			return 1
+		}
+	}
+
+	config_foreach find_ifsection interface
+
+	[ -z "$ifsection" ] && {
+		ifsection="iface_$sid"
+		uci_set_state radvd "$ifsection" "" interface
+		uci_set_state radvd "$ifsection" interface "$lanif"
+	}
+
+	uci_set_state radvd "$ifsection" ignore            0
+	uci_set_state radvd "$ifsection" IgnoreIfMissing   1
+	uci_set_state radvd "$ifsection" AdvSendAdvert     1
+	uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
+	uci_set_state radvd "$ifsection" AdvLinkMTU        "$ifmtu"
+}
+
+set_6to4_radvd_prefix() {
+	local cfgid="$1"
+	local lanif="${2:-lan}"
+	local wanif="${3:-wan}"
+	local prefix="${4:-0:0:0:1::/64}"
+	local vlt="${5:-300}"
+	local plt="${6:-120}"
+	local pfxsection=""
+
+	find_pfxsection() {
+		local net base
+		local cfg="$1"
+		config_get net  "$cfg" interface
+		config_get base "$cfg" Base6to4Interface
+
+		[ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
+			pfxsection="$cfg"
+			return 1
+		}
+	}
+
+	config_foreach find_pfxsection prefix
+
+	[ -z "$pfxsection" ] && {
+		pfxsection="prefix_${sid}_${lanif}"
+		uci_set_state radvd "$pfxsection" ""                   prefix
+		uci_set_state radvd "$pfxsection" ignore               0
+		uci_set_state radvd "$pfxsection" interface            "$lanif"
+		uci_set_state radvd "$pfxsection" prefix               "$prefix"
+		uci_set_state radvd "$pfxsection" AdvOnLink            1
+		uci_set_state radvd "$pfxsection" AdvAutonomous        1
+		uci_set_state radvd "$pfxsection" AdvValidLifetime     "$vlt"
+		uci_set_state radvd "$pfxsection" AdvPreferredLifetime "$plt"
+		uci_set_state radvd "$pfxsection" Base6to4Interface    "$wanif"
+	}
+}
+
+proto_6to4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6to4-$cfg"
+
+	local mtu ttl ipaddr adv_subnet adv_interface adv_valid_lifetime adv_preferred_lifetime
+	json_get_vars mtu ttl ipaddr adv_subnet adv_interface adv_valid_lifetime adv_preferred_lifetime
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	local wanif
+	if ! network_find_wan wanif; then
+		proto_notify_error "$cfg" "NO_WAN_LINK"
+		return
+	fi
+
+	[ -z "$ipaddr" ] && {
+		if ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_ADDRESS"
+			return
+		fi
+	}
+
+	test_6to4_rfc1918 "$ipaddr" && {
+		proto_notify_error "$cfg" "INVALID_LOCAL_ADDRESS"
+		return
+	}
+
+	# find our local prefix
+	local prefix6=$(find_6to4_prefix "$ipaddr")
+	local local6="$prefix6::1"
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_address "$local6" 16
+	proto_add_ipv6_route "::" 0 "::192.88.99.1"
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	json_add_string local "$ipaddr"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
+		local sid="6to4_$cfg"
+
+		uci_revert_state radvd
+		config_load radvd
+
+		adv_subnet=$((0x${adv_subnet:-1}))
+
+		local adv_subnets=""
+
+		for adv_interface in ${adv_interface:-lan}; do
+			local adv_ifname
+			network_get_device adv_ifname "${adv_interface:-lan}" || continue
+
+			local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
+
+			logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
+			ip -6 addr add $subnet6 dev $adv_ifname
+
+			set_6to4_radvd_interface "$sid" "$adv_interface" "$mtu"
+			set_6to4_radvd_prefix    "$sid" "$adv_interface" \
+				"$wanif" "$(printf "0:0:0:%x::/64" $adv_subnet)" \
+				"$adv_valid_lifetime" "$adv_preferred_lifetime"
+
+			adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
+			adv_subnet=$(($adv_subnet + 1))
+		done
+
+		uci_set_state network "$cfg" adv_subnets "$adv_subnets"
+
+		/etc/init.d/radvd restart
+	}
+}
+
+proto_6to4_teardown() {
+	local cfg="$1"
+	local link="6to4-$cfg"
+
+	local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
+
+	grep -qs "^ *$link:" /proc/net/dev && {
+		[ -n "$adv_subnets" ] && {
+			uci_revert_state radvd
+			/etc/init.d/radvd enabled && /etc/init.d/radvd restart
+		}
+	}
+}
+
+proto_6to4_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "adv_interface"
+	proto_config_add_string "adv_subnet"
+	proto_config_add_int "adv_valid_lifetime"
+	proto_config_add_int "adv_preferred_lifetime"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6to4
+}