Hotplug script and config file to establish a 6-to-4 tunnel using a IPv6 public
relay or tunnel broker.
Signed-off-by: Conrad Hirano <[EMAIL PROTECTED]>
Index: packages/ipv6/6to4/files/etc/hotplug.d/iface/10-ipv6
===================================================================
--- packages/ipv6/6to4/files/etc/hotplug.d/iface/10-ipv6 (revision 0)
+++ packages/ipv6/6to4/files/etc/hotplug.d/iface/10-ipv6 (revision 0)
@@ -0,0 +1,80 @@
+#!/bin/sh
+# Copyright (C) 2008 OpenWrt.org
+
+TUNNEL=tun6to4
+
+. /etc/functions.sh
+
+config_cb() {
+ local cfg="$CONFIG_SECTION"
+ local cfgtype
+ local ip6add
+
+ config_get cfgtype "$cfg" TYPE
+
+ if [ "$cfgtype" = ipv6 ]
+ then
+ config_get REMOTE $cfg remote
+
+ if [ "$REMOTE" = relay ]
+ then
+ ip6add=`echo $IP4LOC | awk -F. '{ printf
"2002:%02x%02x:%02x%02x::1", $1, $2, $3, $4 }'`
+ IP4REM="any"
+ IP6TUN="${ip6add}/16"
+ IP6REM="::192.88.99.1"
+ IP6LOC="${ip6add}/64"
+ else
+ config_get ip6add $cfg local6
+ IP4REM="${REMOTE}"
+ IP6TUN="${ip6add}/64"
+ config_get IP6REM $cfg remote6
+ config_get IP6LOC lan ip6addr
+ fi
+ fi
+}
+
+del_ip6addr() {
+ local file=/var/state/network.$$
+ grep -v "^config_set 'wan' 'ip6addr' " /var/state/network > "$file"
+ mv "$file" /var/state/network
+}
+
+if [ "$INTERFACE" = wan ]
+then
+ . /var/state/network
+ config_get IP4LOC wan ipaddr
+ config_get IP6WAN wan ip6addr
+ config_get IFNAME lan ifname
+ config_load ipv6
+
+ case $ACTION in
+ ifup)
+ if [ ! "$IP6WAN" ]
+ then
+ ip tunnel add $TUNNEL mode sit ttl 255 remote
$IP4REM local $IP4LOC
+ ip link set $TUNNEL up
+ ip -6 addr add $IP6TUN dev $TUNNEL
+ ip -6 route add 2000::/3 via $IP6REM dev
$TUNNEL metric 1
+ [ "$REMOTE" = relay ] && ip -6 addr add $IP6LOC
dev $IFNAME
+ uci set "/var/state/network.wan.ip6addr=$IP6TUN"
+ else
+ ip tunnel change $TUNNEL local $IP4LOC
+ if [ "$IP6WAN" != "$IP6TUN" ]
+ then
+ ip -6 addr flush to 2002::/16
+ ip -6 addr add $IP6TUN dev $TUNNEL
+ ip -6 addr add $IP6LOC dev $IFNAME
+ del_ip6addr
+ uci set
"/var/state/network.wan.ip6addr=$IP6TUN"
+ fi
+ fi
+ ;;
+ ifdown)
+ ip -6 route flush dev $TUNNEL
+ ip link set dev $TUNNEL down
+ ip tunnel del $TUNNEL
+ [ "$REMOTE" = relay ] && ip -6 addr del $IP6LOC dev
$IFNAME
+ del_ip6addr
+ ;;
+ esac
+fi
Index: packages/ipv6/6to4/files/etc/config/ipv6
===================================================================
--- packages/ipv6/6to4/files/etc/config/ipv6 (revision 0)
+++ packages/ipv6/6to4/files/etc/config/ipv6 (revision 0)
@@ -0,0 +1,8 @@
+config ipv6
+ option remote relay
+
+# Use a public relay, i.e. 192.88.99.1, or specify parameters supplied by a
tunnel broker.
+
+# option remote xxx.xxx.xxx.xxx
+# option local6 2001:db8::2
+# option remote6 2001:db8::1
Index: packages/ipv6/6to4/Makefile
===================================================================
--- packages/ipv6/6to4/Makefile (revision 0)
+++ packages/ipv6/6to4/Makefile (revision 0)
@@ -0,0 +1,36 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6to4
+PKG_VERSION:=1.0.0
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6to4
+ SECTION:=ipv6
+ CATEGORY:=IPv6
+ TITLE:=IPv6 tunnel hotplug script
+ DEPENDS:=+kmod-ipv6 +ip
+endef
+
+define Package/6to4/description
+ Hotplug script to establish a 6-to-4 tunnel
+endef
+
+define Build/Prepare
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+define Package/6to4/install
+ $(INSTALL_DIR) $(1)
+ $(CP) ./files/* $(1)/
+endef
+
+$(eval $(call BuildPackage,6to4))
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