diff options
Diffstat (limited to 'ppp/ip-up.ipv6to4')
| -rw-r--r-- | ppp/ip-up.ipv6to4 | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/ppp/ip-up.ipv6to4 b/ppp/ip-up.ipv6to4 new file mode 100644 index 00000000..6767703c --- /dev/null +++ b/ppp/ip-up.ipv6to4 @@ -0,0 +1,160 @@ +#!/bin/bash +# +# ip-up.ipv6to4 +# +# +# Taken from: +# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version 2001-05-07 +# +# Calling parameters: +# $1: interface name +# +# Called by (mostly) /etc/ppp/ip-up.local +# like: /etc/ppp/ip-up.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_IPV4ADDR=IPv4addr: special local address for 6to4 tunneling (only needed behind a NAT gateway) +# 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" +# +# Requirements +# radvd-0.6.2p3 or newer supporting option "Base6to4Interface" +# + + +if [ -z "$1" ]; then + echo $"Option 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-$CONFIG +source_config + +# Test if IPv6 is globally enabled +if [ ! "${NETWORKING_IPV6}" = "yes" ]; then + # Global IPv6 switch not enabled, end now + exit 0 +fi + +if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then + # IPv6 setup isn't well + exit 1 +fi + +. /etc/sysconfig/network-scripts/network-functions-ipv6 + +# Run basic IPv6 test (and make sure the ipv6 module will be loaded), if not ok, skip IPv6 initialization +test_ipv6 || exit 1 + + +# Setup of 6to4, if configured +valid6to4config="yes" +if [ "$IPV6TO4INIT" = "yes" ]; then + if [ ! -z "$IPV6TO4_IPV4ADDR" ]; then + # Take special configured from config file (precedence 1) + ipv4addr="$IPV6TO4_IPV4ADDR" + else + # Get IPv4 address from interface first (has precedence 2) + ipv4addr="`LC_ALL=C ifconfig $DEVICE |grep "inet addr:" | tr : " " | awk '{ print $3 }'`" + if [ -z "$ipv4addr" ]; then + # Take configured from config file (precedence 3) + ipv4addr="$IPADDR" + fi + fi + if [ ! -z "$ipv4addr" ]; then + # Test for non-global IPv4 address + if ! testipv4_globalusable $ipv4addr; then + echo $"Given IPv4 address $ipv4addr is not a globally usable one, 6to4 configuration is not valid!" + valid6to4config="no" + fi + if [ -z "$IPV6TO4_RELAY" ]; then + echo $"IPv6to4 configuration needs an IPv6to4 relay address, 6to4 configuration is not valid!" + valid6to4config="no" + fi + else + echo $"IPv6to4 configuration needs an IPv4 address on related interface or extra specified, 6to4 configuration is not valid!" + valid6to4config="no" + fi + if [ "$valid6to4config" = "yes" ]; then + # Beep + if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2000; else echo -en "\a" >/dev/console; fi + + # Cleanup all old data (needed, if "ip-down.ipv6to4" wasn't executed) + + # Delete all static IPv6to4 routes to relay + ifdown_ipv6_route_all sit0 ::$IPV6TO4_RELAY + + # Delete routes to local networks + for devsuf in $IPV6TO4_ROUTING; do + dev="`echo $devsuf | awk -F- '{ print $1 }'`" + ifdown_ipv6_route_all $dev :: + done + + # Delete all configured 6to4 address + ifdown_ipv6to4_all sit0 + + # Setup new data + ifup_ipv6to4 $DEVICE $ipv4addr || exit 1 + + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + grep "^sit0" /etc/sysconfig/static-routes-ipv6 | while read device args; do + if [ "$device" = "sit0" ]; then + ifup_ipv6_route $args ::$IPV6TO4_RELAY sit0 + fi + done + fi + + if [ "$IPV6TO4_CONTROL_RADVD" = "yes" ]; then + if [ -z "$IPV6TO4_RADVD_PIDFILE" ]; then + # Take default + 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 + echo $"Trigger RADVD for IPv6to4 prefix recalculation" + kill -HUP $pid + else + false + fi + fi + if [ ! -z "$IPV6TO4_ROUTING" ]; then + # Generate 6to4 address + ipv6to4prefix="`create6to4prefix $ipv4addr`" + if [ ! -z "$ipv6to4prefix" ]; then + # Add route to local networks + for devsuf in $IPV6TO4_ROUTING; do + dev="`echo $devsuf | awk -F- '{ print $1 }'`" + suf="`echo $devsuf | awk -F- '{ print $2 }'`" + ifup_ipv6_route ${ipv6to4prefix}$suf :: $dev + done + else + echo $"Error occured while calculating the IPv6to4 prefix" + fi + else + echo $"RADVD control enabled, but config is not complete!" + fi + fi + + # Beep + if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2666; else echo -en "\a" >/dev/console; fi + fi +fi |