diff options
Diffstat (limited to 'network-scripts/ifdown-ipv6')
| -rwxr-xr-x | network-scripts/ifdown-ipv6 | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/network-scripts/ifdown-ipv6 b/network-scripts/ifdown-ipv6 new file mode 100755 index 00000000..7ba3efdc --- /dev/null +++ b/network-scripts/ifdown-ipv6 @@ -0,0 +1,139 @@ +#!/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 "/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 |