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#!/bin/sh
#
# ip-down.ipv6to4
#
#
# Taken from:
# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de>
#
# Version 2001-07-15a
#
# Calling parameters:
# $1: interface name
#
# Called by (mostly) /etc/ppp/ip-down.local
# like: /etc/ppp/ip-down.ipv6to4 $1 >>/var/log/ppp-ipv6to4.log 2>&1
#
# Uses following information from /etc/sysconfig/network:
# NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting)
#
# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1:
# IPV6TO4INIT=yes|no: controls configuration
# IPV6TO4_RELAY=IPv4addr: remote IPv6to4 relay address
# IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64": information to setup local subnetting
# IPV6TO4_CONTROL_RADVD=yes|no: controls radvd triggering
# IPV6TO4_RADVD_PIDFILE=file: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid"
#
if [ -z "$1" ]; then
echo $"Arg 1 is empty but should contain interface name - skip IPv6to4 initialization" >/dev/stderr
exit 1
fi
# Get global network configuration
. /etc/sysconfig/network
# Source IPv4 helper functions
cd /etc/sysconfig/network-scripts
. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
source_config
# Test whether IPv6 should be configured, else stop
[ "${NETWORKING_IPV6}" = "yes" ] || exit 0
if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then
exit 1
fi
. /etc/sysconfig/network-scripts/network-functions-ipv6
# Run basic IPv6 test, if not ok, skip IPv6 initialization
test_ipv6 testonly || exit 0
# Shutdown of 6to4, if configured
valid6to4config="yes"
if [ -z "$IPV6TO4_RELAY" ]; then
valid6to4config="no"
fi
if [ "$valid6to4config" = "yes" ]; then
# Beep
if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2666; else echo -en "\a" >/dev/console; fi
if [ "$IPV6TO4_CONTROL_RADVD" = "yes" ]; then
# stop RADVD from distributing no longer usable 6to4 prefixes
if [ -z "$IPV6TO4_RADVD_PIDFILE" ]; then
IPV6TO4_RADVD_PIDFILE="/var/run/radvd/radvd.pid"
fi
# Send SIGHUP to radvd
if [ -f "$IPV6TO4_RADVD_PIDFILE" ]; then
pid="`cat $IPV6TO4_RADVD_PIDFILE`"
if [ ! -z "$pid" ]; then
# still waiting for feature enabling: stopping distribution of prefixes in RADVD....
# kill -SOMETHING $pid
false
else
false
fi
fi
fi
# Delete all static IPv6to4 routes to relay
ifdown_ipv6_route_all sit0 ::$IPV6TO4_RELAY
if [ ! -z "$IPV6TO4_ROUTING" ]; then
# Delete routes to local networks
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
ifdown_ipv6_route_all $dev ::
done
fi
# Delete all configured 6to4 address
ifdown_ipv6to4_all sit0
# Beep
if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2000; else echo -en "\a" >/dev/console; fi
fi
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