he-ipv6.sh

#!/bin/sh
# Hurricane Electric IPv6 Tunnel Broker script for Ubuntu
# /etc/network/if-up.d/he-ipv6.sh

# Written by Jesse B. Hannah (http://jbhannah.net) <[email protected]>
# Based on instructions provided by Hurricane Electric (http://tunnelbroker.net)

###
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
###

# This script does all of the necessary configuration to enable direct IPv6
# connectivity via a Hurricane Electric IPv6 tunnel from http://tunnelbroker.net
# on an Ubuntu or other Linux system when radvd is unavailable on the network,
# or for setting up radvd on the system.

# To use this script, put it in /etc/network/if-up.d and make it executable,
# then run it by itself or restart the networking services.

# Load the kernel IPv6 module. This isn't necessary on Linode.
modprobe ipv6

# The primary internet-facing network interface
MY_IF=eth0

# Given under "IPv6 Tunnel Endpoints" on the tunnel details page
SERVER_V4=xxx.xxx.xxx.xxx
CLIENT_V6=2001:xxx:xxxx:xxx::2/64

# An address from your Routed /64 or /48 prefix for the local interface
LOCAL_V6=2001:xxx:xxxx:xxx::1337/64

# If you have a static IP address (such as on Linode), you can comment these out.
# Otherwise, set them to your tunnelbroker.net username and password, and your tunnel ID.
HE_USER=
HE_PASS=
HE_TUNNEL=

# URL encode your username and password and update the client IPv4 endpoint of your tunnel
# Again, if you have a static IP address, you can skip this.
HE_USER_ENC=`perl -MURI::Escape -e "print uri_escape('$HE_USER')"`
HE_PASS_ENC=`perl -MURI::Escape -e "print uri_escape('$HE_PASS')"`
curl -k -s "https://$HE_USER_ENC:[email protected]/ipv4_end.php?tid=$HE_TUNNEL"

# Get the local IPv4 address of your primary interface
LOCAL_V4=`ifconfig $MY_IF | grep -E 'inet addr:[\.0-9]*' | sed s/addr:// | awk '{ print $2 }'`

# Drop any existing tunnel
ip tunnel del he-ipv6
ip addr del $LOCAL_V6 dev $MY_IF

# Configure the tunnel and local interfaces and routing table
ip tunnel add he-ipv6 mode sit remote $SERVER_V4 local $LOCAL_V4 ttl 255
ip link set he-ipv6 up
ip addr add $CLIENT_V6 dev he-ipv6
ip addr add $LOCAL_V6 dev $MY_IF
ip route add ::/0 dev he-ipv6

# Uncomment or run the following separately to check your address configuration
# ip -f inet6 addr