Subversion Repositories configs

#!/bin/sh

#

# ifdown-ipv6

#

#

# Taken from:

# (P) & (C) 2000-2004 by Peter Bieringer <pb@bieringer.de>

#

#  You will find more information on the initscripts-ipv6 homepage at

#   http://www.deepspace6.net/projects/initscripts-ipv6.html

#

# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>

#

# Version 2005-09-22

#

# Note: if called as (like normally) by /etc/sysconfig/network-scripts/ifdown

#        exit codes aren't handled by "ifdown"

#

# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1:

#  DEVICE=<device>

#  IPV6INIT=yes|no: controls IPv6 configuration for this interface

#

# Optional for 6to4 tunneling:

#  IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay [default: 192.88.99.1]

#  IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup internal interfaces

#

# Optional for 6to4 tunneling links to trigger radvd:

#  IPV6_CONTROL_RADVD=yes|no: controls radvd triggering [optional]

#  IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" [optional]

#  IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd [optional, default is SIGHUP]

#

#  Required version of radvd to use 6to4 prefix recalculation

#   0.6.2p3 or newer supporting option "Base6to4Interface"

#  Required version of radvd to use dynamic ppp links

#   0.7.0 + fixes or newer

#

. /etc/sysconfig/network

cd /etc/sysconfig/network-scripts

. ./network-functions

CONFIG=$1

[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG

source_config

REALDEVICE=${DEVICE%%:*}

DEVICE=$REALDEVICE

[ -f /etc/sysconfig/network-scripts/network-functions-ipv6 ] || exit 1

. /etc/sysconfig/network-scripts/network-functions-ipv6

# IPv6 test, no module loaded, exit if system is not IPv6-ready

ipv6_test testonly || exit 0

# Test device status

ipv6_test_device_status $DEVICE

if [ $? != 0 -a $? != 11 ]; then

	# device doesn't exist or other problem occurs

	exit 1

fi

# Switch some sysctls to secure mode

/sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.forwarding=0 >/dev/null 2>&1

/sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_ra=0 >/dev/null 2>&1

/sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_redirects=0 >/dev/null 2>&1

# Test status of tun6to4 device

ipv6_test_device_status tun6to4

if [ $? = 0 -o $? = 11 ]; then

	# Device exists

	valid6to4config="yes"

	if [ -z "$IPV6TO4_RELAY" ]; then

		IPV6TO4_RELAY="192.88.99.1"

	fi

	# Get IPv4 address from interface

	if [ -n "$IPV6TO4_IPV4ADDR" ]; then

		# Take special configured from config file (precedence 1)

		ipv4addr="$IPV6TO4_IPV4ADDR"

		# Get IPv4 address from interface first

		ipv4addrlocal="$(ipv6_get_ipv4addr_of_device $DEVICE)"

		if [ -z "$ipv4addrlocal" ]; then

			# Take configured from config file

			ipv4addrlocal="$IPADDR"

		fi

	else

		# Get IPv4 address from interface first (has precedence 2)

		ipv4addr="$(ipv6_get_ipv4addr_of_device $DEVICE)"

		if [ -z "$ipv4addr" ]; then

			# Take configured from config file (precedence 3)

			ipv4addr="$IPADDR"

		fi

		ipv4addrlocal="$ipv4addr"

	fi

	# Get local IPv4 address of dedicated tunnel

	ipv4addr6to4local="$(ipv6_get_ipv4addr_of_tunnel tun6to4 local)"

	if [ -z "$ipv4addrlocal" -o -z "$ipv4addr6to4local" ]; then

		# no IPv4 addresses given, 6to4 sure not configured

		valid6to4config="no"

	else

		# Check against configured 6to4 tunnel to see if this interface was used before

		if [ "$ipv4addrlocal" != "$ipv4addr6to4local" ]; then

			# IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup

			valid6to4config="no"

		fi

	fi

fi

# Shutdown of 6to4, if configured

if [ "$valid6to4config" = "yes" ]; then

	if [ -n "$IPV6TO4_ROUTING" ]; then

		# Delete routes to local networks

		for devsuf in $IPV6TO4_ROUTING; do

			dev="$(echo $devsuf | awk -F- '{ print $1 }')"

			ipv6_cleanup_6to4_device $dev

		done

	fi

	# Delete all configured 6to4 address

	ipv6_cleanup_6to4_tunnels tun6to4

	# Control running radvd

	ipv6_trigger_radvd down "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE

fi

# Delete all current configured IPv6 addresses on this interface

ipv6_cleanup_device $DEVICE