diff options
Diffstat (limited to 'network-scripts/ifup-ipv6')
| -rwxr-xr-x | network-scripts/ifup-ipv6 | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/network-scripts/ifup-ipv6 b/network-scripts/ifup-ipv6 new file mode 100755 index 00000000..ecbe5b79 --- /dev/null +++ b/network-scripts/ifup-ipv6 @@ -0,0 +1,316 @@ +#!/bin/bash +# +# ifup-ipv6 +# +# +# Taken from: +# (P) & (C) 2000-2006 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: 2006-07-20 +# +# Note: if called (like normally) by /etc/sysconfig/network-scripts/ifup +# exit codes aren't handled by "ifup" +# +# 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": +# IPV6INIT=yes|no: controls IPv6 configuration for this interface +# IPV6ADDR=<IPv6 address>[/<prefix length>]: specify primary static IPv6 address +# IPV6ADDR_SECONDARIES="<IPv6 address>[/<prefix length>] ..." (optional) +# IPV6_ROUTER=yes|no: controls IPv6 autoconfiguration (no: multi-homed interface without routing) +# IPV6_AUTOCONF=yes|no: controls IPv6 autoconfiguration +# defaults: +# IPV6FORWARDING=yes: IPV6_AUTOCONF=no, IPV6_ROUTER=yes +# IPV6FORWARDING=no: IPV6_AUTOCONF=yes +# IPV6_MTU=<MTU for IPv6>: controls IPv6 MTU for this link (optional) +# IPV6_PRIVACY="rfc3041": control IPv6 privacy (optional) +# This script only supports "rfc3041" (if kernel supports it) +# +# Optional for 6to4 tunneling (hardwired name of tunnel device is "tun6to4"): +# IPV6TO4INIT=yes|no: controls 6to4 tunneling setup +# IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay (default: 192.88.99.1) +# IPV6TO4_MTU=<MTU for IPv6>: controls IPv6 MTU for the 6to4 link (optional, default is MTU of interface - 20) +# IPV6TO4_IPV4ADDR=<IPv4 address>: overwrite local IPv4 address (optional) +# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces +# Example: IPV6TO4_ROUTING="eth0-:f101::1/64 eth1-:f102::1/64" +# +# Optional for 6to4 tunneling 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=$REALDEVICE + +# Test whether IPv6 configuration is disabled for this interface +is_false "$IPV6INIT" && 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 + +# Test device status +ipv6_test_device_status $DEVICE +if [ $? != 0 -a $? != 11 ]; then + # device doesn't exist or other problem occurs + exit 1 +fi + +# Setup IPv6 address on specified interface +if [ -n "$IPV6ADDR" ]; then + ipv6_add_addr_on_device $DEVICE $IPV6ADDR || exit 1 +fi + +# Get current global IPv6 forwarding +ipv6_global_forwarding_current="$(/sbin/sysctl -e -n net.ipv6.conf.all.forwarding)" + +# Set some proc switches depending on defines +if [ "$IPV6FORWARDING" = "yes" ]; then + # Global forwarding should be enabled + + # Check, if global IPv6 forwarding was already set by global script + if [ $ipv6_global_forwarding_current -ne 1 ]; then + net_log $"Global IPv6 forwarding is enabled in configuration, but not currently enabled in kernel" + net_log $"Please restart network with '/sbin/service network restart'" + fi + + ipv6_local_forwarding=1 + ipv6_local_auto=0 + ipv6_local_accept_ra=0 + if [ "$IPV6_ROUTER" = "no" ]; then + ipv6_local_forwarding=0 + fi + if [ "$IPV6_AUTOCONF" = "yes" ]; then + ipv6_local_auto=1 + ipv6_local_accept_ra=2 + fi +else + # Global forwarding should be disabled + + # Check, if global IPv6 forwarding was already set by global script + if [ $ipv6_global_forwarding_current -ne 0 ]; then + net_log $"Global IPv6 forwarding is disabled in configuration, but not currently disabled in kernel" + net_log $"Please restart network with '/sbin/service network restart'" + fi + + ipv6_local_forwarding=0 + ipv6_local_auto=1 + ipv6_local_accept_ra=1 + if [ "$IPV6_AUTOCONF" = "no" ]; then + ipv6_local_auto=0 + if [ ! "$IPV6_FORCE_ACCEPT_RA" = "yes" ]; then + ipv6_local_accept_ra=0 + fi + fi +fi + +if [ ! "$IPV6_SET_SYSCTLS" = "no" ]; then + /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.forwarding=$ipv6_local_forwarding >/dev/null 2>&1 + /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_ra=$ipv6_local_accept_ra >/dev/null 2>&1 + /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_redirects=$ipv6_local_auto >/dev/null 2>&1 + /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.autoconf=$ipv6_local_auto >/dev/null 2>&1 +fi + +# Set IPv6 MTU, if given +if [ -n "$IPV6_MTU" ]; then + ipv6_set_mtu $DEVICE $IPV6_MTU +fi + +# Setup additional IPv6 addresses from list, if given +if [ -n "$IPV6ADDR_SECONDARIES" ]; then + for ipv6addr in $IPV6ADDR_SECONDARIES; do + ipv6_add_addr_on_device $DEVICE $ipv6addr + done +fi + +# Enable IPv6 RFC3041 privacy extensions if desired +if [ "$IPV6_PRIVACY" = "rfc3041" ]; then + if [ ! "$IPV6_SET_SYSCTLS" = "no" ]; then + /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.use_tempaddr=2 >/dev/null 2>&1 + if [ $? -ne 0 ]; then + net_log $"Cannot enable IPv6 privacy method '$IPV6_PRIVACY', not supported by kernel" + fi + fi +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 args; do + ipv6_add_route $args $DEVICE + done +fi + +# Setup of 6to4, if configured +if [ "$IPV6TO4INIT" = "yes" ]; then + valid6to4config="yes" + + # Test device status of 6to4 tunnel + ipv6_test_device_status tun6to4 + if [ $? = 0 ]; then + # device is already up + net_log $"Device 'tun6to4' (from '$DEVICE') is already up, shutdown first" + exit 1 + fi + + # Get IPv4 address for global 6to4 prefix calculation + if [ -n "$IPV6TO4_IPV4ADDR" ]; then + # Take special configured from config file (precedence 1) + ipv4addr="$IPV6TO4_IPV4ADDR" + + # Get local IPv4 address from interface + 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 + + if [ -n "$ipv4addr" ]; then + if ! ipv6_test_ipv4_addr_global_usable $ipv4addr; then + net_log $"Given IPv4 address '$ipv4addr' is not globally usable" info + valid6to4config="no" + fi + if [ -z "$IPV6TO4_RELAY" ]; then + IPV6TO4_RELAY="192.88.99.1" + fi + + # Check/generate relay address + ipv6to4_relay="$(ipv6_create_6to4_relay_address $IPV6TO4_RELAY)" + if [ $? -ne 0 ]; then + valid6to4config="no" + fi + else + net_log $"IPv6to4 configuration needs an IPv4 address on related interface or otherwise specified" info + valid6to4config="no" + fi + + # Setup 6to4 tunnel (hardwired name is "tun6to4"), if config is valid + if [ "$valid6to4config" = "yes" ]; then + # Get MTU of master device + ipv4mtu="$(/sbin/ip link show dev $DEVICE | awk '/\<mtu\>/ { print $5 }')" + if [ -n "$ipv4mtu" ]; then + # IPv6 tunnel MTU is IPv4 MTU minus 20 for IPv4 header + tunnelmtu=$(($ipv4mtu-20)) + fi + + if [ -n "$IPV6TO4_MTU" ]; then + if [ $IPV6TO4_MTU -gt $tunnelmtu ]; then + net_log $"Warning: configured MTU '$IPV6TO4_MTU' for 6to4 exceeds maximum limit of '$tunnelmtu', ignored" warning + else + tunnelmtu=$IPV6TO4_MTU + fi + fi + + ipv6_add_6to4_tunnel tun6to4 $ipv4addr "" $tunnelmtu $ipv4addrlocal || exit 1 + + # Add route to for compatible addresses (removed later again) + ipv6_add_route "::/96" "::" tun6to4 + + # Add default route, if device matches + if [ "$IPV6_DEFAULTDEV" = "tun6to4" ]; then + if [ -n "$IPV6_DEFAULTGW" ]; then + net_log $"Warning: interface 'tun6to4' does not support 'IPV6_DEFAULTGW', ignored" warning + fi + ipv6_set_default_route $ipv6to4_relay tun6to4 + fi + + # Add static routes + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + LC_ALL=C grep -w "^tun6to4" /etc/sysconfig/static-routes-ipv6 | while read device network gateway; do + if [ -z "$network" ]; then + continue + fi + if [ -z "$gateway" ]; then + gateway="$ipv6to4_relay" + fi + ipv6_add_route $network $gateway tun6to4 + done + fi + + # Setup additional static IPv6 routes (newer config style) + if [ -f "/etc/sysconfig/network-scripts/route6-tun6to4" ]; then + sed -ne 's/#.*//' -e '/[^[:space:]]/p' /etc/sysconfig/network-scripts/route6-tun6to4 | while read line; do + if echo "$line" | LC_ALL=C grep -vq 'via'; then + # Add gateway if missing + line="$line via $ipv6to4_relay" + fi + /sbin/ip -6 route add $line + done + fi + + # Cleanup autmatically generated autotunnel (not needed for 6to4) + /sbin/ip -6 route del ::/96 dev tun6to4 + /sbin/ip -6 addr del "::$ipv4addrlocal/128" dev tun6to4 + + if [ "$IPV6_CONTROL_RADVD" = "yes" ]; then + # RADVD is in use, so forwarding of IPv6 packets should be enabled, display warning + if [ $ipv6_global_forwarding_current -ne 1 ]; then + net_log $"Using 6to4 and RADVD IPv6 forwarding usually should be enabled, but it isn't" warning + fi + + if [ -n "$IPV6TO4_ROUTING" ]; then + ipv6to4prefix="$(ipv6_create_6to4_prefix $ipv4addr)" + if [ -n "$ipv6to4prefix" ]; then + # Add route to local networks + for devsuf in $IPV6TO4_ROUTING; do + dev="${devsuf%%-*}" + suf="$(echo $devsuf | awk -F- '{ print $2 }')" + ipv6_add_addr_on_device ${dev} ${ipv6to4prefix}${suf} + done + else + net_log $"Error occurred while calculating the IPv6to4 prefix" + fi + else + net_log $"radvd control enabled, but config is not complete" + fi + + # Control running radvd + ipv6_trigger_radvd up "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE + fi + else + net_log $"6to4 configuration is not valid" + exit 1 + fi +fi + +#wait for all global IPv6 addresses to leave the "tentative" state +ipv6_wait_tentative $DEVICE |