From 5473ffcdc6afc4a3fb56fb0019e3b34854be9a3d Mon Sep 17 00:00:00 2001 From: Bill Nottingham Date: Mon, 11 Mar 2002 22:42:29 +0000 Subject: *BIG* IPv6 syncup. --- sysconfig/network-scripts/ifup-ipv6 | 185 +++++++++++++++++++++--------------- 1 file changed, 109 insertions(+), 76 deletions(-) (limited to 'sysconfig/network-scripts/ifup-ipv6') diff --git a/sysconfig/network-scripts/ifup-ipv6 b/sysconfig/network-scripts/ifup-ipv6 index cd5d0062..dc628341 100755 --- a/sysconfig/network-scripts/ifup-ipv6 +++ b/sysconfig/network-scripts/ifup-ipv6 @@ -4,19 +4,25 @@ # # # Taken from: -# (P) & (C) 2000-2001 by Peter Bieringer +# (P) & (C) 2000-2002 by Peter Bieringer +# +# You will find more information in the IPv6-HowTo for Linux at +# http://www.bieringer.de/linux/IPv6/ # # RHL integration assistance by Pekka Savola # -# Version 2001-07-16 +# Version 2002-01-25 +# +# 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": # NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting) # # Uses following information from "/etc/sysconfig/network-scripts/ifcfg-$1": # IPV6INIT=yes|no: controls IPv6 configuration for this interface -# IPV6ADDR=/: specify primary static IPv6 address here -# IPV6ADDR_SECONDARIES="" [optional] +# IPV6ADDR=[/]: specify primary static IPv6 address +# IPV6ADDR_SECONDARIES="[/] ..." (optional) # IPV6_ROUTER=yes|no: controls IPv6 autoconfiguration (no: multi-homed interface without routing) # IPV6_AUTOCONF=yes|no: controls IPv6 autoconfiguration # defaults: @@ -24,16 +30,22 @@ # IPV6FORWARDING=no: IPV6_AUTOCONF=yes # IPV6_MTU=: controls IPv6 MTU for this link [optional] # -# Optional for 6to4 tunneling: +# Optional for 6to4 tunneling (hardwired name of tunnel device is "tun6to4"): # IPV6TO4INIT=yes|no: controls 6to4 tunneling setup -# IPV6TO4_RELAY=: IPv4/IPv6to4 address of the remote 6to4 relay -# IPV6TO4_IPV4ADDR=: overwrite local IPv4 address [optional] -# IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64": information to setup local subnetting -# IPV6TO4_CONTROL_RADVD=yes|no: controls radvd triggering [optional] -# IPV6TO4_RADVD_PIDFILE=file: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" [optional] +# IPV6TO4_RELAY=: IPv4 address of the remote 6to4 relay [default: 192.88.99.1] +# IPV6TO4_IPV4ADDR=: overwrite local IPv4 address [optional] +# IPV6TO4_ROUTING="-/ ...": information to setup local subnetting +# Example: IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64" +# +# Optional for 6to4 tunneling to trigger radvd: +# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering [optional] +# IPV6_RADVD_PIDFILE=: 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] # -# Requirements for 6to4 if using radvd: -# radvd-0.6.2p3 or newer supporting option "Base6to4Interface" +# 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 # @@ -48,6 +60,10 @@ 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 @@ -61,17 +77,24 @@ fi # Source IPv6 helper functions . /etc/sysconfig/network-scripts/network-functions-ipv6 + # IPv6 test, module loaded, exit if system is not IPv6-ready -test_ipv6 || exit 1 +ipv6_test || exit 1 + +# Test device status +ipv6_test_device_status $DEVICE +if [ $? != 0 -a $? != 11 ]; then + # device doesn't exist or other problem occurs + exit 1 +fi - # Setup IPv6 address on specified interface if ! [ -z "$IPV6ADDR" ]; then - ifup_ipv6_real $DEVICE $IPV6ADDR + ipv6_add_addr_on_device $DEVICE $IPV6ADDR || exit 1 fi # Get current global IPv6 forwarding -ipv6_global_forwarding_current="`sysctl -n net.ipv6.conf.all.forwarding`" +ipv6_global_forwarding_current="`ipv6_exec_sysctl -n net.ipv6.conf.all.forwarding`" # Set some proc switches depending on defines if [ "$IPV6FORWARDING" = "yes" ]; then @@ -80,7 +103,7 @@ if [ "$IPV6FORWARDING" = "yes" ]; then # Check, if global IPv6 forwarding was already set by global script if [ $ipv6_global_forwarding_current -ne 1 ]; then echo $"Global IPv6 forwarding is enabled in configuration, but not currently enabled in kernel" -# echo $"Please restart network with '/sbin/service network restart'" + echo $"Please restart network with '/sbin/service network restart'" fi ipv6_local_forwarding=1 @@ -97,7 +120,7 @@ else # Check, if global IPv6 forwarding was already set by global script if [ $ipv6_global_forwarding_current -ne 0 ]; then echo $"Global IPv6 forwarding is disabled in configuration, but not currently disabled in kernel" -# echo $"Please restart network with '/sbin/service network restart'" + echo $"Please restart network with '/sbin/service network restart'" fi ipv6_local_forwarding=0 @@ -106,124 +129,134 @@ else ipv6_local_auto=0 fi fi -sysctl -w net.ipv6.conf.$DEVICE.forwarding=$ipv6_local_forwarding >/dev/null -sysctl -w net.ipv6.conf.$DEVICE.accept_ra=$ipv6_local_auto >/dev/null -sysctl -w net.ipv6.conf.$DEVICE.accept_redirects=$ipv6_local_auto >/dev/null +ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.forwarding=$ipv6_local_forwarding >/dev/null +ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_ra=$ipv6_local_auto >/dev/null +ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_redirects=$ipv6_local_auto >/dev/null # Set IPv6 MTU, if given if [ ! -z "$IPV6_MTU" ]; then ipv6_set_mtu $DEVICE $IPV6_MTU fi -# Setup additional IPv6 addresses from list +# Setup additional IPv6 addresses from list, if given if [ ! -z "$IPV6ADDR_SECONDARIES" ]; then for ipv6addr in $IPV6ADDR_SECONDARIES; do - ifup_ipv6_real $DEVICE $ipv6addr + ipv6_add_addr_on_device $DEVICE $ipv6addr done fi -# Setup additional static IPv6 routes on specified interface +# Setup default IPv6 route, check are done by function +if [ ! -z "$IPV6_DEFAULTDEV" -o ! -z "$IPV6_DEFAULTGW" ]; then + ipv6_set_default_route "$IPV6_DEFAULTGW" "$IPV6_DEFAULTDEV" "$DEVICE" +fi + +# Setup additional static IPv6 routes on specified interface, if given if [ -f /etc/sysconfig/static-routes-ipv6 ]; then - grep -w "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device args; do - ifup_ipv6_route $args $DEVICE + LC_ALL=C grep -w "^$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 + echo $"Device 'tun6to4' (from '$DEVICE') is already up, shutdown first" + exit 1 + fi + + # Get IPv4 address for local 6to4 prefix calculation 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 }'`" + ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`" if [ -z "$ipv4addr" ]; then # Take configured from config file (precedence 3) ipv4addr="$IPADDR" fi fi if [ ! -z "$ipv4addr" ]; then - if ! testipv4_globalusable $ipv4addr; then - echo $"Given IPv4 address $ipv4addr is not a globally usable one, 6to4 configuration is not valid!" + if ! ipv6_test_ipv4_addr_global_usable $ipv4addr; then + echo $"Given IPv4 address '$ipv4addr' is not globally usable, 6to4 configuration is not valid" valid6to4config="no" fi if [ -z "$IPV6TO4_RELAY" ]; then - echo $"IPv6to4 configuration needs an IPv6to4 relay address, 6to4 configuration is not valid!" - valid6to4config="no" + IPV6TO4_RELAY="192.88.99.1" fi - if [ "$valid6to4config" = "yes" ]; then - if testipv4_globalusable $IPV6TO4_RELAY 2>/dev/null; then - true - elif testipv6_valid $IPV6TO4_RELAY; then - relay6to4type="ipv6" - if echo $IPV6TO4_RELAY | grep -q "^2002:"; then - # IPv6 address is a 6to4 (further tests not be implemented at the moment) - true - else - echo $"Given IPv6 address of relay is not a 6to4 one, 6to4 configuration is not valid!" - valid6to4config="no" - fi - else - echo $"Given address of relay is not a globally usable one, 6to4 configuration is not valid!" - valid6to4config="no" - fi + + # Check/generate relay address + ipv6to4_relay="`ipv6_create_6to4_relay_address $IPV6TO4_RELAY`" + if [ $? -ne 0 ]; then + valid6to4config="no" fi else - echo $"IPv6to4 configuration needs an IPv4 address on related interface or extra specified, 6to4 configuration is not valid!" + echo $"IPv6to4 configuration needs an IPv4 address on related interface or otherwise specified, 6to4 configuration is not valid" valid6to4config="no" fi + + # Setup 6to4 tunnel (hardwired name is "tun6to4"), if config is valid if [ "$valid6to4config" = "yes" ]; then - ifup_ipv6to4 $DEVICE $ipv4addr + ipv6_add_6to4_tunnel tun6to4 $ipv4addr + + # Add default route, if device matches + if [ "$IPV6_DEFAULTDEV" = "tun6to4" ]; then + if [ ! -z "$IPV6_DEFAULTGW" ]; then + echo $"Warning: interface 'tun6to4' does not support 'IPV6_DEFAULTGW', ignored" + fi + ipv6_set_default_route $ipv6to4_relay tun6to4 + fi # Add static routes if [ -f /etc/sysconfig/static-routes-ipv6 ]; then - grep -w "^sit0" /etc/sysconfig/static-routes-ipv6 | while read device network dummy; do - if [ "$relay6to4type" = "ipv6" ]; then - # Foreign 6to4 relay gateway as IPv6to4 - ifup_ipv6_route $network $IPV6TO4_RELAY sit0 - else - # Foreign 6to4 relay gateway as compatible IPv4 - ifup_ipv6_route $network ::$IPV6TO4_RELAY sit0 + 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 $ipv6to4_relay tun6to4 done - fi + fi + + # Cleanup autmatically generated autotunnel (not needed for 6to4) + ipv6_del_route "::/96" "::" tun6to4 + ipv6_del_addr_on_device tun6to4 "::$ipv4addr/128" - if [ "$IPV6TO4_CONTROL_RADVD" = "yes" ]; then + if [ "$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 - echo $"Using 6to4 and RADVD IPv6 forwarding usually should be enabled, but it isn't!" + echo $"Using 6to4 and RADVD IPv6 forwarding usually should be enabled, but it isn't" fi - if [ -z "$IPV6TO4_RADVD_PIDFILE" ]; then - IPV6TO4_RADVD_PIDFILE="/var/run/radvd/radvd.pid" - fi - - # Send SIGHUP to radvd for prefix recalculation - 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 - ipv6to4prefix="`create6to4prefix $ipv4addr`" + ipv6to4prefix="`ipv6_create_6to4_prefix $ipv4addr`" if [ ! -z "$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 + ipv6_add_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!" + echo $"radvd control enabled, but config is not complete" fi + + # Control running radvd + ipv6_trigger_radvd up "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE fi + else + echo $"6to4 configuration is not valid" + exit 1 fi fi + -- cgit v1.2.1