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proc/1726/root/proc/9153/cwd/etc/sysconfig/network-scripts/_[ Not.Writable ]

File://proc/1726/root/proc/9153/cwd/etc/sysconfig/network-scripts/ifdown-ipv6

#!/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

if [ ! "$IPV6_SET_SYSCTLS" = "no" ]; then
    # Switch some sysctls to secure mode
    /sbin/sysctl -e -w net.ipv6.conf.$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
fi
/sbin/ip link set $DEVICE addrgenmode eui64 >/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 $IPV6TO4_ROUTING; do
            dev="${devsuf%%-*}"
            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

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