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//etc/sysconfig/network-scripts/ifup-sit

#!/bin/sh
#
# ifup-sit
#
#
# Taken from:
# (P) & (C) 2000-2003 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: 2003-09-08
#
# Uses following information from /etc/sysconfig/network:
#  IPV6_DEFAULTDEV=<device>: controls default route (optional)
#  IPV6_DEFAULTGW=<address>: controls default route (optional)
#
# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1:
#  DEVICE=<device>
#  IPV6INIT=yes|no: controls IPv6 configuration for this interface
#  IPV6_MTU=<MTU for IPv6>: controls IPv6 MTU for this link (optional)
#
#  For static tunnels
#  IPV6TUNNELIPV4=<IPv4 address>: IPv4 address of remote tunnel endpoint
#  IPV6TUNNELIPV4LOCAL=<IPv4 address>: (optional) local IPv4 address of tunnel
#  IPV6ADDR=<IPv6 address>[/<prefix length>]: (optional) local IPv6 address of a numbered tunnel
#  IPV6ADDR_SECONDARIES="<IPv6 address>[/<prefix length>] ..." (optional) additional local IPv6 addresses
#

. /etc/sysconfig/network

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 configuration is enabled for this interface, else stop
[ "$IPV6INIT" = "yes" ] || exit 0

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

# IPv6 test, module loaded, exit if system is not IPv6-ready
ipv6_test || exit 1

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

if [ -z "$IPV6TUNNELIPV4" ]; then
	net_log $"Missing remote IPv4 address of tunnel, configuration is not valid"
	exit 1
fi

# Test device status
ipv6_test_device_status $DEVICE
if [ $? = 0 ]; then
	# device is already up
	net_log $"Device '$DEVICE' is already up, please shutdown first"
	exit 1
fi

# Create tunnel
ipv6_add_tunnel_device $DEVICE $IPV6TUNNELIPV4 "" $IPV6TUNNELIPV4LOCAL || exit 1

# Set IPv6 MTU, if given
if [ -n "$IPV6_MTU" ]; then
	ipv6_set_mtu $DEVICE $IPV6_MTU
fi

# Apply local IPv6 address, if given (numbered tunnel)
if [ -n "$IPV6ADDR" ]; then
	ipv6_add_addr_on_device $DEVICE $IPV6ADDR
fi

# Setup additional IPv6 addresses from list, if given
if [ -n "$IPV6ADDR_SECONDARIES" ]; then
	for ipv6addr in $IPV6ADDR_SECONDARIES; do
		ipv6_add_addr_on_device $DEVICE $ipv6addr
	done
fi

# Setup default IPv6 route, check are done by function
if [ -n "$IPV6_DEFAULTDEV" -o -n "$IPV6_DEFAULTGW" ]; then
	ipv6_set_default_route "$IPV6_DEFAULTGW" "$IPV6_DEFAULTDEV" "$DEVICE"
fi

# Setup additional static IPv6 routes on specified interface, if given
if [ -f /etc/sysconfig/static-routes-ipv6 ]; then
	LC_ALL=C grep -w "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device ipv6route args; do
		ipv6_add_route $ipv6route :: $DEVICE
	done
fi

# Setup static routes
/etc/sysconfig/network-scripts/ifup-routes ${REALDEVICE}