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173 lines
4.6 KiB
Bash
Executable File
173 lines
4.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# This program is under GPL [http://www.gnu.org/copyleft/gpl.htm]
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#
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# (c) 1999,2000,2001,2002,2003,2004,2005 - Tom Eastep (teastep@shorewall.net)
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#
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# On most distributions, this file should be called /etc/init.d/shorewall.
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#
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# Complete documentation is available at http://shorewall.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of Version 2 of the GNU General Public License
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# as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc.,51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301 USA
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#
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# If an error occurs while starting or restarting the firewall, the
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# firewall is automatically stopped.
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#
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# Commands are:
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#
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# ipv6 start Starts ipv6
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# ipv6 restart Restarts ipv6
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# ipv6 reload Restarts ipv6
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# ipv6 stop Stops ipv6
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# ipv6 status Displays ipv6 status
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#
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# chkconfig: 2345 4 99
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# description: Configure a 6to4 tunnel
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### BEGIN INIT INFO
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# Provides: ipv6
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# Required-Start: boot.udev
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# Required-Stop:
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# Default-Start: 2 3 5
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# Default-Stop: 0 1 6
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# Description: starts and stops ipv6
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### END INIT INFO
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################################################################################
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# Interfaces to be configured
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#
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# External Interface
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#
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SIT="sit1"
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#
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# If the external interface is a 6to4 tunnel (sit device) then specify the
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# IPv4 address here. Otherwise, leave this variable enpty
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#
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ADDRESS4=206.124.146.180
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#
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# Internal interfaces of the firewall -- space separated
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#
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INTERFACES="eth0"
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#
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# Bits 48-63 of the first internal interface address. Will be incremented
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# for each additional internal interface.
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#
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SLA=1
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#
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# Default Gateway -- for 6to4, this is ::192.88.99.1
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#
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GATEWAY=::192.88.99.1
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#
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# For 6to4 configurations, the ADDRESS6 variable is calculated as follows.
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#
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# For other configurations, you need to specify ADDRESS6.
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#
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# ADDRESS6 is assumed to be a 48-bit prefix. If not, then the logic for
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# addressing on the internal networks needs to be replaced below.
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#
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ADDRESS6=$(printf 2002:%02x%02x:%02x%02x $(echo $ADDRESS4 | tr '.' ' '))
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#
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# The global address of $SIT
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#
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SITADDR=${ADDRESS6}::1
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################################################################################
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# Give Usage Information #
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################################################################################
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usage() {
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echo "Usage: $0 start|stop|reload|restart|status"
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exit 1
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}
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################################################################################
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# Start IPv6
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################################################################################
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do_start()
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{
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local interface
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if [ -n "$SIT" ]; then
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if [ -n "$ADDRESS4" ]; then
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#
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# 6to4 -- create tunnel
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#
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modprobe sit
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/sbin/ip tunnel add $SIT mode sit ttl 64 remote any local $ADDRESS4
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fi
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#
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# Configure the external IP address
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#
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/sbin/ip -6 addr add ${SITADDR} dev $SIT
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[ -n "$ADDRESS4" ] && /sbin/ip link set dev $SIT up
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[ -n "$GATEWAY" ] && /sbin/ip -6 route add default via $GATEWAY dev $SIT metric 1
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fi
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for interface in $INTERFACES ; do
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/sbin/ip -6 addr add ${ADDRESS6}:$SLA::1/64 dev $interface
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SLA=$(($SLA + 1 ))
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done
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}
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################################################################################
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# Stop IPv6
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################################################################################
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do_stop()
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{
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local interface
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local device
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device=1
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local original_sla
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original_sli=$SLA
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if [ -n "$SIT" ]; then
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if [ -n "$ADDRESS4" ]; then
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/sbin/ip link set $SIT down
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else
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/sbin/ip -6 addr del ${SITADDR} dev $SIT
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[ -n "$GATEWAY" ] && /sbin/ip -6 route del default via $GATEWAY dev $SIT metric 1
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fi
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[ -n "$ADDRESS4" ] && /sbin/ip tunnel del $SIT
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fi
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for interface in $INTERFACES; do
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/sbin/ip -6 addr del ${ADDRESS6}:$SLA::1/64 dev $interface
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SLA=$(($SLA + 1 ))
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done
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SLA=$original_sla #In case this is a restart/reload
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}
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################################################################################
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# E X E C U T I O N B E G I N S H E R E #
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################################################################################
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command="$1"
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case "$command" in
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start)
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do_start
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;;
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stop)
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do_stop
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;;
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restart|reload)
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do_stop
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do_start
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;;
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status)
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/sbin/ip -6 addr list
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/sbin/ip -6 route list
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;;
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*)
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usage
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;;
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esac
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