#!/bin/sh
#
# ifdown-sit
#
#
# Taken from:
# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de>
#
#  You will find more information in the IPv6-HowTo for Linux at
#   http://www.bieringer.de/linux/IPv6/
#
# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>
#
# Version 2002-03-09
#
# 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:
#  DEVICE=<device>
#  IPV6_TUNNELNAME=<name>: (optional) overwrite given device name
#


# 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

# IPv6 don't need aliases anymore, config is skipped
REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'`
[ "$DEVICE" != "$REALDEVICE" ] && exit 0

# 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

# Source IPv6 helper functions
. /etc/sysconfig/network-scripts/network-functions-ipv6


# Overwrite device name with tunnel name, if given
if [ ! -z "$IPV6_TUNNELNAME" ]; then
	DEVICE="$IPV6_TUNNELNAME"
fi

# Generic tunnel device sit0 is not supported here
if [ "$DEVICE" = "sit0" ]; then
	echo $"Device '$DEVICE' isn't supported here, use IPV6_AUTOTUNNEL setting and restart (IPv6) networking"
	exit 1
fi

# 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 0
fi

# Cleanup and shut down IPv6-in-IPv4 tunnel device
ipv6_del_tunnel_device $DEVICE