diff options
Diffstat (limited to 'sysconfig/network-scripts')
| -rwxr-xr-x | sysconfig/network-scripts/ifdown-ipv6 | 56 | ||||
| -rwxr-xr-x | sysconfig/network-scripts/ifdown-sit | 42 | ||||
| -rwxr-xr-x | sysconfig/network-scripts/ifup-ipv6 | 44 | ||||
| -rwxr-xr-x | sysconfig/network-scripts/ifup-sit | 41 | ||||
| -rw-r--r-- | sysconfig/network-scripts/network-functions-ipv6 | 476 |
5 files changed, 424 insertions, 235 deletions
diff --git a/sysconfig/network-scripts/ifdown-ipv6 b/sysconfig/network-scripts/ifdown-ipv6 index fcef285b..a4396aa7 100755 --- a/sysconfig/network-scripts/ifdown-ipv6 +++ b/sysconfig/network-scripts/ifdown-ipv6 @@ -1,11 +1,13 @@ -#!/bin/bash +#!/bin/sh # # ifdown-ipv6 # -# Taken from scripts from: # -# (P) & (C) 2000 Peter Bieringer <pb@bieringer.de> -# some hints taken from RedHat scripts +# Taken from: +# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version 2001-02-02 +# . /etc/sysconfig/network @@ -14,44 +16,44 @@ cd /etc/sysconfig/network-scripts CONFIG=$1 [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG -source_config +source_config -# Test if IPv6 configuration is enabled for this interface +# Test if IPv6 configuration is enabled if [ ! "$IPV6INIT" = "yes" ]; then - # not enabled, stop here - exit 0 + # not enabled, stop here + exit 0 fi # Test if IPv6 is up if [ "${NETWORKING_IPV6}" = "yes" ]; then + . /etc/sysconfig/network-scripts/network-functions-ipv6 # Delete additional static IPv6 routes on specified interface - if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device args; do - if [ "$device" = "$DEVICE" ]; then - ifdown_ipv6_route $args $DEVICE - fi + if [ "$device" = "$DEVICE" ]; then + ifdown_ipv6_route $args $DEVICE + fi done fi - # Delete tunnel - if ! [ -z "$IPV6TUNNELIPV4" -o -z "$IPV6TUNNELROUTE" ]; then - ifdown_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $IPV6TUNNELROUTE - fi + # Switch off forwarding per device (packets received on this + # interface aren't forwarded + forwarding_ipv6 no $DEVICE - # Shutdown additional (1) IPv6 address on specified interface - if ! [ -z "$IPV6ADDR_0" -o -z "$IPV6PREFIXLENGTH_0" ]; then - ifdown_ipv6_real $DEVICE $IPV6ADDR_0 $IPV6PREFIXLENGTH_0 - fi - - # Shutdown additional (2) IPv6 address on specified interface - if ! [ -z "$IPV6ADDR_1" -o -z "$IPV6PREFIXLENGTH_1" ]; then - ifdown_ipv6_real $DEVICE $IPV6ADDR_1 $IPV6PREFIXLENGTH_1 + # Delete additional IPv6 addresses from list + if [ ! -z "$IPV6ADDR_SECONDARIES" ]; then + for ipv6addr in $IPV6ADDR_SECONDARIES; do + ifdown_ipv6_real $DEVICE $ipv6addr $IPV6PREFIXLENGTH + done fi - - # Shutdown IPv6 address on specified interface - if ! [ -z "$IPV6ADDR" -o -z "$IPV6PREFIXLENGTH" ]; then + + # Shutdown basic configured IPv6 address on specified interface + if ! [ -z "$IPV6ADDR" ]; then ifdown_ipv6_real $DEVICE $IPV6ADDR $IPV6PREFIXLENGTH fi + + # Cleanup all IPv6 configuration on specified interface (prevents from kernel crashing) + ifdown_ipv6_real_all $DEVICE fi diff --git a/sysconfig/network-scripts/ifdown-sit b/sysconfig/network-scripts/ifdown-sit index 3eba5d79..c2323362 100755 --- a/sysconfig/network-scripts/ifdown-sit +++ b/sysconfig/network-scripts/ifdown-sit @@ -2,10 +2,14 @@ # # ifdown-sit # +# # Taken from: +# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version 2001-02-03 # -# (P) & (C) 2000 Peter Bieringer <pb@bieringer.de> -# some hints taken from RedHat scripts + +# Filter tags (for stripping, empty lines following if all is stripped) . /etc/sysconfig/network @@ -14,29 +18,35 @@ cd /etc/sysconfig/network-scripts CONFIG=$1 [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG -source_config +source_config # Test if IPv6 configuration is enabled for this interface if [ ! "$IPV6INIT" = "yes" ]; then - # not enabled, stop here - exit 0 + # not enabled, stop here + exit 0 fi # Test if IPv6 is up if [ "${NETWORKING_IPV6}" = "yes" ]; then + . /etc/sysconfig/network-scripts/network-functions-ipv6 - # Delete additional static IPv6 routes on specified interface - if [ -f /etc/sysconfig/static-routes-ipv6 ]; then - grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device ipv6route args; do - if [ "$device" = "$DEVICE" ]; then - ifdown_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $ipv6route - fi - done - fi + # Delete IPv6-in-IPv4 tunnel(s) + if [ "$DEVICE" = "sit0" ]; then + ifdown_ipv6_autotunnel + elif [ ! -z "$IPV6TUNNELIPV4" ]; then + # Delete static IPv6 tunnel routes on specified virtual interface + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device ipv6route args; do + if [ "$device" = "$DEVICE" ]; then + ifdown_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $ipv6route + fi + done + fi - # Delete tunnel - if ! [ -z "$IPV6TUNNELIPV4" -o -z "$IPV6TUNNELROUTE" ]; then - ifdown_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $IPV6TUNNELROUTE + if [ ! -z "$IPV6ADDR" ]; then + # Numbered tunnel + ifdown_ipv6_real sit0 $IPV6ADDR $IPV6PREFIXLENGTH + fi fi fi diff --git a/sysconfig/network-scripts/ifup-ipv6 b/sysconfig/network-scripts/ifup-ipv6 index e69262c8..4ef124ae 100755 --- a/sysconfig/network-scripts/ifup-ipv6 +++ b/sysconfig/network-scripts/ifup-ipv6 @@ -2,9 +2,14 @@ # # ifup-ipv6 # +# # Taken from: +# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version 2001-02-02 # -# (P) & (C) 2000 Peter Bieringer <pb@bieringer.de> + +# Filter tags (for stripping, empty lines following if all is stripped) . /etc/sysconfig/network @@ -15,7 +20,7 @@ CONFIG=$1 [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG source_config -# Test if IPv6 configuration is enabled for this interface +# Test if IPv6 configuration is enabled if [ ! "$IPV6INIT" = "yes" ]; then # not enabled, stop here exit 0 @@ -23,34 +28,39 @@ fi # Test if IPv6 is up if [ "${NETWORKING_IPV6}" = "yes" ]; then + . /etc/sysconfig/network-scripts/network-functions-ipv6 # Setup IPv6 address on specified interface - if ! [ -z "$IPV6ADDR" -o -z "$IPV6PREFIXLENGTH" ]; then + if ! [ -z "$IPV6ADDR" ]; then ifup_ipv6_real $DEVICE $IPV6ADDR $IPV6PREFIXLENGTH fi - - # Setup additional (1) IPv6 address on specified interface - if ! [ -z "$IPV6ADDR_0" -o -z "$IPV6PREFIXLENGTH_0" ]; then - ifup_ipv6_real $DEVICE $IPV6ADDR_0 $IPV6PREFIXLENGTH_0 + + # Switch forwarding per device like defined + # Packets received on selected interface are forwarded + if ! [ -z "$IPV6FORWARDING" ]; then + if [ "$IPV6FORWARDING" = "yes" ]; then + forwarding_ipv6 yes $DEVICE + # also for all (otherwise, nothing is forwarded) + forwarding_ipv6 yes + else + forwarding_ipv6 no $DEVICE + fi fi - - # Setup additional (2) IPv6 address on specified interface - if ! [ -z "$IPV6ADDR_1" -o -z "$IPV6PREFIXLENGTH_1" ]; then - ifup_ipv6_real $DEVICE $IPV6ADDR_1 $IPV6PREFIXLENGTH_1 + + # Setup additional IPv6 addresses from list + if [ ! -z "$IPV6ADDR_SECONDARIES" ]; then + for ipv6addr in $IPV6ADDR_SECONDARIES; do + ifup_ipv6_real $DEVICE $ipv6addr $IPV6PREFIXLENGTH + done fi # Setup additional static IPv6 routes on specified interface - if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device args; do if [ "$device" = "$DEVICE" ]; then ifup_ipv6_route $args $DEVICE fi done fi - - # Setup tunnel - if ! [ -z "$IPV6TUNNELIPV4" -o -z "$IPV6TUNNELROUTE" ]; then - ifup_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $IPV6TUNNELROUTE - fi fi diff --git a/sysconfig/network-scripts/ifup-sit b/sysconfig/network-scripts/ifup-sit index ef703943..8a1daa56 100755 --- a/sysconfig/network-scripts/ifup-sit +++ b/sysconfig/network-scripts/ifup-sit @@ -2,9 +2,14 @@ # # ifup-sit # +# # Taken from: -# (P) & (C) 2000 Peter Bieringer <pb@bieringer.de> -# some hints taken from RedHat scripts +# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version 2001-02-06 +# + +# Filter tags (for stripping, empty lines following if all is stripped) . /etc/sysconfig/network @@ -23,19 +28,25 @@ fi # Test if IPv6 is up if [ "${NETWORKING_IPV6}" = "yes" ]; then - . /etc/sysconfig/network-scripts/network-functions-ipv6 + + . /etc/sysconfig/network-scripts/network-functions-ipv6 - # Setup tunnel - if ! [ -z "$IPV6TUNNELIPV4" -o -z "$IPV6TUNNELROUTE" ]; then - ifup_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $IPV6TUNNELROUTE - fi + # Setup IPv6-in-IPv4 tunnel(s) + if [ "$DEVICE" = "sit0" ]; then + ifup_ipv6_autotunnel + elif [ ! -z "$IPV6TUNNELIPV4" ]; then + if [ ! -z "$IPV6ADDR" ]; then + # Numbered tunnel + ifup_ipv6_real sit0 $IPV6ADDR $IPV6PREFIXLENGTH + fi - # Add additional static IPv6 routes on specified interface - if [ -f /etc/sysconfig/static-routes-ipv6 ]; then - grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device ipv6route args; do - if [ "$device" = "$DEVICE" ]; then - ifup_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $ipv6route - fi - done - fi + # Add static IPv6 tunnel routes on specified virtual interface + if [ -f /etc/sysconfig/static-routes-ipv6 ]; then + grep "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device ipv6route args; do + if [ "$device" = "$DEVICE" ]; then + ifup_ipv6_tunnel $DEVICE $IPV6TUNNELIPV4 $ipv6route + fi + done + fi + fi fi diff --git a/sysconfig/network-scripts/network-functions-ipv6 b/sysconfig/network-scripts/network-functions-ipv6 index c8c61cc4..2c0e7846 100644 --- a/sysconfig/network-scripts/network-functions-ipv6 +++ b/sysconfig/network-scripts/network-functions-ipv6 @@ -3,86 +3,127 @@ # network-functions-ipv6 # # Taken from: -# (P) & (C) 1997-2000 Peter Bieringer <pb@bieringer.de> +# (P) & (C) 1997-2001 by Peter Bieringer <pb@bieringer.de> +# +# Version: 2001-02-05 +# + + +# Filter tags (for stripping, empty lines following if all is stripped) + + -# DEBUG_IPV6 & 1 "set -x" mode -# DEBUG_IPV6 & 2 prevents from executing any network configuration -# DEBUG_IPV6 & 4 shows messages in the test section -#DEBUG_IPV6=$[ 65535 - 1 -2 -4] -DEBUG_IPV6=0 # Return values # 0 = ok # 1 = error occurs # 2 = not enabled, i.e. no IPv6 kernel support or switched off by configuration + ##### Test for IPv6 capabilites function test_ipv6() { - if [ -z $DEBUG_IPV6 ] ; then DEBUG_IPV6=0; fi - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo " Tests for IPv6" - fi + # Test for IPv6 enabled kernel + + if ! [ -f /proc/net/if_inet6 ]; then + echo "Did not find IPv6 in kernel, trying to load module" + modprobe ipv6 + + if ! [ -f /proc/net/if_inet6 ]; then + echo "Kernel not compiled for IPv6 - stop!" + return 2 + fi + fi + + # Test for IPv6 enabled needed binaries + + if ! ifconfig -? 2>&1 | grep -q "(IPv6)"; then + echo "'`which ifconfig`' (net-tools) not compiled for IPv6 - stop!" + return 2 + fi + + if ! route -? 2>&1 | grep -q "(IPv6)"; then + echo "'`which route`' (net-tools) not compiled for IPv6 - stop!" + return 2 + fi + + + return 0 +} + +##### Control IPv6 forwarding +# Display usage +function forwarding_ipv6_usage() { + echo "Usage: $0 yes|no [device]" +} + + +# Control IPv6 forwarding +# $1: control [yes|no|on|off] +# $2: network device (if not given, global IPv6 forwarding is set) +function forwarding_ipv6() { + control=$1 + device=$2 # maybe empty + + if [ -z $control ]; then + echo "Missing option forwarding control'" + forwarding_ipv6_usage + return 1 + fi + + if ! [ "$control" = "yes" -o "$control" = "no" -o "$control" = "on" -o "$control" = "off" ]; then + echo "Don't understand forwarding control option '$control'" + forwarding_ipv6_usage + return 1 + fi + + # Device "lo" need no IPv6 configuration + if [ "$device" = "lo" ]; then + return 0; + fi + + # Run IPv6 test + test_ipv6 || return - # Test for IPv6 kernel - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo -n " Test kernel for IPv6..." - fi - if ! [ -f /proc/net/if_inet6 ]; then - echo "Did not find IPv6 in kernel, trying to load module" - modprobe ipv6 + if [ "$control" = "yes" -o "$control" = "on" ]; then + status=1 + else + status=0 + fi + + # Global control? (if no device is given) + if [ -z $device ]; then + if [ -f /proc/sys/net/ipv6/conf/all/forwarding ]; then + echo "$status" > /proc/sys/net/ipv6/conf/all/forwarding + fi + fi - if ! [ -f /proc/net/if_inet6 ]; then - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo "Not compiled for IPv6 - stop!" - else - echo "Kernel not compiled for IPv6 - stop!" - fi - return 2 - fi - else - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo " Ok!" - fi - fi - - # Test for IPv6 enabled needed binaries - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo n " Test binaries for IPv6 capability..." - fi - - if ! ifconfig -? 2>&1 | grep -q "(IPv6)"; then - echo "'`which ifconfig`' (net-tools) not compiled for IPv6 - stop!" - return 2 - fi + # Per device control + if [ ! -z $device ]; then + if [ -f /proc/sys/net/ipv6/conf/$device/forwarding ]; then + echo "$string IPv6 forwarding for device '$device'" + echo "$status" > /proc/sys/net/ipv6/conf/$device/forwarding + fi + fi - if ! route -? 2>&1 | grep -q "(IPv6)"; then - echo "'`which route`' (net-tools) not compiled for IPv6 - stop!" - return 2 - fi - - if ! [ $[ $DEBUG_IPV6 & 4 ] = 0 ] ; then - echo " Ok!" - fi - - # Info about executing - if [ $[ $DEBUG_IPV6 > 0 ] = 1 ]; then - echo " Executing in DEBUG_IPV6 mode: $DEBUG_IPV6" - fi } -##### Static route configuration + +##### Static IPv6 route configuration # Display usage -function ifup_ipv6_route_usage() { +function ifupdown_ipv6_route_usage() { echo $"Usage: $0 IPv6-network IPv6-gateway [device]" } -# set route +# Set static IPv6 route +# $1: IPv6 network to route +# $2: IPv6 gateway over which $1 should be routed +# $3: Interface (optional) function ifup_ipv6_route() { networkipv6=$1 gatewayipv6=$2 @@ -90,31 +131,37 @@ function ifup_ipv6_route() { if [ -z $networkipv6 ]; then echo $"Missing option 'IPv6-network'" - ifup_ipv6_route_usage + ifupdown_ipv6_route_usage return 1 fi if [ -z $gatewayipv6 ]; then - echo $"Missing option 'IPv6-gateway'" - ifup_ipv6_route_usage + echo "Missing option 'IPv6-gateway'" + ifupdown_ipv6_route_usage return 1 fi - # Run IPv6 test + # Device "lo" need no IPv6 configuration + if [ "$device" = "lo" ]; then + return 0; + fi + + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x if [ -z $device ]; then - route -A inet6 add $networkipv6 gw $gatewayipv6 + route -A inet6 add $networkipv6 gw $gatewayipv6 else - route -A inet6 add $networkipv6 gw $gatewayipv6 dev $device + route -A inet6 add $networkipv6 gw $gatewayipv6 dev $device fi - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } -# delete route +# Delete static IPv6 route +# $1: IPv6 network to route +# $2: IPv6 gateway over which $1 should be routed +# $3: Interface (optional) function ifdown_ipv6_route() { networkipv6=$1 gatewayipv6=$2 @@ -132,210 +179,319 @@ function ifdown_ipv6_route() { return 1 fi - # Run IPv6 test + # Device "lo" need no IPv6 configuration + if [ "$device" = "lo" ]; then + return 0; + fi + + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x if [ -z $device ]; then - route -A inet6 del $networkipv6 gw $gatewayipv6 + echo "Delete IPv6 route '$networkipv6' gateway '$gatewayipv6'" + route -A inet6 del $networkipv6 gw $gatewayipv6 else - route -A inet6 del $networkipv6 gw $gatewayipv6 dev $device + route -A inet6 del $networkipv6 gw $gatewayipv6 dev $device fi - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } -##### tunnel configuration +##### automatic tunneling configuration -# Display usage -function ifup_ipv6_tunnel_usage() { - echo $"Usage: $0 interfacename IPv4-tunneladdress IPv6-route" +## Configure automatic tunneling up +function ifup_ipv6_autotunnel() { + + # Run IPv6 test + test_ipv6 || return + + + # enable IPv6-over-IPv4 tunnels + if ifconfig sit0 | grep -q "UP "; then + # already up, do nothing + true + else + # basic tunnel device to up + ifconfig sit0 up + + # Switch on forwarding + forwarding_ipv6 on sit0 + fi + +} + + +## Configure automatic tunneling down +function ifdown_ipv6_autotunnel() { + + # Run IPv6 test + test_ipv6 || return + + + # disable IPv6-over-IPv4 tunnels (if a tunnel is no longer up) + if route -A inet6 -n | grep sit0 | grep -v -q "^::"; then + # existing routes, do nothing + true + else + # basic tunnel device to down + echo "Bring down basic tunnel device 'sit0'" + # Switch off forwarding + forwarding_ipv6 off sit0 + + ifconfig sit0 down + fi + +} + + +##### static tunneling configuration + +function ifupdown_ipv6_tunnel_usage() { + echo "Usage: $0 interfacename IPv4-tunneladdress IPv6-route" } -## Configure tunnels up + +## Configure static tunnels up +# $1: Interface (not needed - dummy) +# $2: IPv4 address of foreign tunnel +# $3: IPv6 route through this tunnel function ifup_ipv6_tunnel() { device=$1 addressipv4tunnel=$2 routeipv6=$3 if [ -z $device ]; then - echo $"Missing option 'device'" - ifup_ipv6_tunnel_usage + echo "Missing option 'device'" + ifupdown_ipv6_tunnel_usage return 1 fi if [ -z $addressipv4tunnel ]; then - echo $"Missing option 'IPv4-tunneladdress'" - ifup_ipv6_tunnel_usage + echo "Missing option 'IPv4-tunneladdress'" + ifupdown_ipv6_tunnel_usage return 1 fi if [ -z $routeipv6 ]; then - echo $"Missing option 'IPv6-route'" - ifup_ipv6_tunnel_usage + echo "Missing option 'IPv6-route'" + ifupdown_ipv6_tunnel_usage return 1 fi - # Run IPv6 test + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x - # enable IPv6-over-IPv4 tunnels - if ifconfig sit0 | grep -q "UP "; then - # already up, do nothing - true - else - # basic tunnel device to up - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ] ; then - ifconfig sit0 up - fi - fi - - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - # Set up a tunnel + # enable general IPv6-over-IPv4 tunneling + ifup_ipv6_autotunnel + + # Set up a tunnel route -A inet6 add $routeipv6 gw ::$addressipv4tunnel dev sit0 - fi - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } -## Configure tunnels down +## Configure static tunnels down +# $1: Interface (not used - dummy) +# $2: IPv4 address of foreign tunnel +# $3: IPv6 route through this tunnel function ifdown_ipv6_tunnel() { device=$1 addressipv4tunnel=$2 routeipv6=$3 if [ -z $device ]; then - echo $"Missing option 'device'" - ifup_ipv6_tunnel_usage + echo "Missing option 'device'" + ifupdown_ipv6_tunnel_usage return 1 fi if [ -z $addressipv4tunnel ]; then - echo $"Missing option 'IPv4-tunneladdress'" - ifup_ipv6_tunnel_usage + echo "Missing option 'IPv4-tunneladdress'" + ifupdown_ipv6_tunnel_usage return 1 fi if [ -z $routeipv6 ]; then - echo $"Missing option 'IPv6-route'" - ifup_ipv6_tunnel_usage + echo "Missing option 'IPv6-route'" + ifupdown_ipv6_tunnel_usage return 1 fi - # Run IPv6 test + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - # Set up a tunnel + # Set up a tunnel route -A inet6 del $routeipv6 gw ::$addressipv4tunnel dev sit0 - fi - # disable IPv6-over-IPv4 tunnels (if tunnel is no longer up) - if route -A inet6 -n | grep sit0 | grep -v -q "^::"; then - # existing routes, do nothing - true - else - # basic tunnel device to down - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ] ; then - ifconfig sit0 down - fi - fi + # disable IPv6-over-IPv4 tunneling (if no longer a tunnel is up) + ifdown_ipv6_autotunnel - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } - -##### Interface configuration -# Display usage -function ifup_ipv6_usage() { - echo $"Usage: $0 interfacename IPv6-address IPv6-prefixlength" +##### Interface configuration +function ifupdown_ipv6_usage() { + echo "Usage: $0 interfacename IPv6-address [IPv6-prefixlength]" } -## Configure interfaces up +## Add an IPv6 address for given interface +# $1: Interface +# $2: IPv6 address +# $3: IPv6 prefix length (optional) function ifup_ipv6_real() { device=$1 address=$2 prefixlength=$3 if [ -z $device ]; then - echo $"Missing option 'device'" - ifup_ipv6_usage + echo "Missing option 'device'" + ifupdown_ipv6_usage return 1 fi + # Device "lo" need no IPv6 configuration + if [ "$device" = "lo" ]; then + return 0; + fi + if [ -z $address ]; then - echo $"Missing option 'IPv6-address'" - ifup_ipv6_usage + echo "Missing option 'IPv6-address'" + ifupdown_ipv6_usage return 1 fi - if [ -z $prefixlength ]; then - echo $"Missing option 'Prefixlength'" - ifup_ipv6_usage - return 1 + # Test status of interface + if ifconfig $device | grep -q "UP "; then + # Interface is up + true + else + # no IPv4 for this interface, interface is still down, do up ... + ifconfig $device up fi - # Run IPv6 test + # Extract address parts + prefixlength_implicit="`echo $address | awk -F/ '{ print $2 }'`" + address_implicit="`echo $address | awk -F/ '{ print $1 }'`" + + # Overwrite optional given one + if [ ! -z $prefixlength_implicit ]; then + prefixlength=$prefixlength_implicit + elif [ -z $prefixlength ]; then + prefixlength=128 + fi + + # Build IPv6 address + address="$address_implicit/$prefixlength" + + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - ifconfig $device add $address/$length || return 2 + # Only add, if address do not already exist + address_configured="`ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $3 }'`" + address_configured_type="`ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $4 }'`" + + if [ "$address_configured" = "$address" ]; then + true + else + ifconfig $device add $address || return 2 fi - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - route -A inet6 add $address/$prefixlength dev $device || return 2 - fi +# route -A inet6 add $address/$prefixlength dev $device || return 2 - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } -## Configure interfaces down +## Remove all IPv6 routes and addresses for given interface +# cleanup to prevent kernel crashes +# $1: Interface +function ifdown_ipv6_real_all() { + device=$1 + + if [ -z $device ]; then + echo "Missing option 'device'" + echo "Usage: ifdown_ipv6_real_all interfacename" + return 1 + fi + + # Get all IPv6 routes through given interface and remove them + route -A inet6 | grep $device | while read ipv6net nexthop flags metric ref use iface args; do + if [ "$device" = "$iface" ]; then + if echo $flags | grep -v -q "A"; then + # Only non addrconf (automatic installed) routes should be removed + ifdown_ipv6_route $ipv6net $nexthop $iface + fi + fi + done + + # Get all IPv6 addresses assigned to given interface and remove them + ifconfig $device | grep "inet6 addr:" | awk '{ print $3 }' | while read ipv6addr args; do + ifdown_ipv6_real $device $ipv6addr + done +} + +## Remove an IPv6 address on given interface +# $1: Interface +# $2: IPv6 address +# $3: IPv6 prefix length (optional) function ifdown_ipv6_real() { device=$1 address=$2 prefixlength=$3 if [ -z $device ]; then - echo $"Missing option 'device'" - ifup_ipv6_usage + echo "Missing option 'device'" + ifupdown_ipv6_usage return 1 fi + # Device "lo" need no IPv6 configuration + if [ "$device" = "lo" ]; then + return 0; + fi + if [ -z $address ]; then - echo $"Missing option 'IPv6-address'" - ifup_ipv6_usage + echo "Missing option 'IPv6-address'" + ifupdown_ipv6_usage return 1 fi - if [ -z $prefixlength ]; then - echo $"Missing option 'Prefixlength'" - ifup_ipv6_usage - return 1 + # Extract address parts + prefixlength_implicit="`echo $address | awk -F/ '{ print $2 }'`" + address_implicit="`echo $address | awk -F/ '{ print $1 }'`" + + # Overwrite optional given one + if [ ! -z $prefixlength_implicit ]; then + prefixlength=$prefixlength_implicit + elif [ -z $prefixlength ]; then + prefixlength=128 fi - # Run IPv6 test + # Build IPv6 address + address="$address_implicit/$prefixlength" + + # Run IPv6 test test_ipv6 || return - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set -x +# +# route -A inet6 del $address/$prefixlength dev $device || return 2 - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - route -A inet6 del $address/$prefixlength dev $device || return 2 - fi - if [ $[ $DEBUG_IPV6 & 2 ] = 0 ]; then - ifconfig $device del $address/$length || return 2 + # Only remove, if address exists and is not link-local (prevents from kernel crashing) + address_configured="`ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $3 }'`" + address_configured_type="`ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $4 }'`" + if [ ! -z "$address_configured" ]; then + if [ "$address_configured_type" = "Scope:Link" ]; then + true + else + ifconfig $device del $address || return 2 + fi + else + true fi - [ $[ $DEBUG_IPV6 & 1 ] = 0 ] || set +x } + |