[1108] | 1 | #!/bin/sh |
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| 2 | # |
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| 3 | # ifup-ipv6 |
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| 4 | # |
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| 5 | # |
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| 6 | # Taken from: |
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| 7 | # (P) & (C) 2000-2006 by Peter Bieringer <pb@bieringer.de> |
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| 8 | # |
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| 9 | # You will find more information on the initscripts-ipv6 homepage at |
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| 10 | # http://www.deepspace6.net/projects/initscripts-ipv6.html |
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| 11 | # |
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| 12 | # RHL integration assistance by Pekka Savola <pekkas@netcore.fi> |
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| 13 | # |
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| 14 | # Version: 2006-07-20 |
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| 15 | # |
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| 16 | # Note: if called (like normally) by /etc/sysconfig/network-scripts/ifup |
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| 17 | # exit codes aren't handled by "ifup" |
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| 18 | # |
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| 19 | # Uses following information from "/etc/sysconfig/network": |
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| 20 | # IPV6_DEFAULTDEV=<device>: controls default route (optional) |
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| 21 | # IPV6_DEFAULTGW=<address>: controls default route (optional) |
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| 22 | # |
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| 23 | # Uses following information from "/etc/sysconfig/network-scripts/ifcfg-$1": |
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| 24 | # IPV6INIT=yes|no: controls IPv6 configuration for this interface |
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| 25 | # IPV6ADDR=<IPv6 address>[/<prefix length>]: specify primary static IPv6 address |
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| 26 | # IPV6ADDR_SECONDARIES="<IPv6 address>[/<prefix length>] ..." (optional) |
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| 27 | # IPV6_ROUTER=yes|no: controls IPv6 autoconfiguration (no: multi-homed interface without routing) |
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| 28 | # IPV6_AUTOCONF=yes|no: controls IPv6 autoconfiguration |
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| 29 | # defaults: |
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| 30 | # IPV6FORWARDING=yes: IPV6_AUTOCONF=no, IPV6_ROUTER=yes |
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| 31 | # IPV6FORWARDING=no: IPV6_AUTOCONF=yes |
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| 32 | # IPV6_MTU=<MTU for IPv6>: controls IPv6 MTU for this link (optional) |
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| 33 | # IPV6_PRIVACY="rfc3041": control IPv6 privacy (optional) |
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| 34 | # This script only supports "rfc3041" (if kernel supports it) |
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| 35 | # |
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| 36 | # Optional for 6to4 tunneling (hardwired name of tunnel device is "tun6to4"): |
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| 37 | # IPV6TO4INIT=yes|no: controls 6to4 tunneling setup |
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| 38 | # IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay (default: 192.88.99.1) |
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| 39 | # IPV6TO4_MTU=<MTU for IPv6>: controls IPv6 MTU for the 6to4 link (optional, default is MTU of interface - 20) |
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| 40 | # IPV6TO4_IPV4ADDR=<IPv4 address>: overwrite local IPv4 address (optional) |
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| 41 | # IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces |
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| 42 | # Example: IPV6TO4_ROUTING="eth0-:f101::1/64 eth1-:f102::1/64" |
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| 43 | # |
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| 44 | # Optional for 6to4 tunneling to trigger radvd: |
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| 45 | # IPV6_CONTROL_RADVD=yes|no: controls radvd triggering (optional) |
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| 46 | # IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" (optional) |
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| 47 | # IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd (optional, default is SIGHUP) |
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| 48 | # |
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| 49 | # Required version of radvd to use 6to4 prefix recalculation |
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| 50 | # 0.6.2p3 or newer supporting option "Base6to4Interface" |
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| 51 | # Required version of radvd to use dynamic ppp links |
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| 52 | # 0.7.0 + fixes or newer |
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| 53 | # |
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| 54 | |
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| 55 | |
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| 56 | . /etc/sysconfig/network |
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| 57 | |
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| 58 | cd /etc/sysconfig/network-scripts |
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[2573] | 59 | . /etc/sysconfig/network-scripts/network-functions |
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[1108] | 60 | |
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| 61 | CONFIG=$1 |
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| 62 | [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG |
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| 63 | source_config |
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| 64 | |
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| 65 | # IPv6 don't need aliases anymore, config is skipped |
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| 66 | REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'` |
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| 67 | [ "$DEVICE" != "$REALDEVICE" ] && exit 0 |
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| 68 | |
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| 69 | # Test whether IPv6 configuration is enabled for this interface, else stop |
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| 70 | [ "$IPV6INIT" = "yes" ] || exit 0 |
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| 71 | |
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| 72 | [ -f /etc/sysconfig/network-scripts/network-functions-ipv6 ] || exit 1 |
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| 73 | . /etc/sysconfig/network-scripts/network-functions-ipv6 |
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| 74 | |
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| 75 | |
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| 76 | # IPv6 test, module loaded, exit if system is not IPv6-ready |
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| 77 | ipv6_test || exit 1 |
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| 78 | |
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| 79 | # Test device status |
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| 80 | ipv6_test_device_status $DEVICE |
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| 81 | if [ $? != 0 -a $? != 11 ]; then |
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| 82 | # device doesn't exist or other problem occurs |
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| 83 | exit 1 |
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| 84 | fi |
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| 85 | |
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| 86 | # Setup IPv6 address on specified interface |
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| 87 | if [ -n "$IPV6ADDR" ]; then |
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| 88 | ipv6_add_addr_on_device $DEVICE $IPV6ADDR || exit 1 |
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| 89 | fi |
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| 90 | |
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| 91 | # Get current global IPv6 forwarding |
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| 92 | ipv6_global_forwarding_current="`ipv6_exec_sysctl -n net.ipv6.conf.all.forwarding`" |
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| 93 | |
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| 94 | # Set some proc switches depending on defines |
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| 95 | if [ "$IPV6FORWARDING" = "yes" ]; then |
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| 96 | # Global forwarding should be enabled |
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| 97 | |
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| 98 | # Check, if global IPv6 forwarding was already set by global script |
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| 99 | if [ $ipv6_global_forwarding_current -ne 1 ]; then |
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| 100 | echo $"Global IPv6 forwarding is enabled in configuration, but not currently enabled in kernel" |
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| 101 | echo $"Please restart network with '/sbin/service network restart'" |
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| 102 | fi |
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| 103 | |
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| 104 | ipv6_local_forwarding=1 |
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| 105 | ipv6_local_auto=0 |
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| 106 | if [ "$IPV6_ROUTER" = "no" ]; then |
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| 107 | ipv6_local_forwarding=0 |
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| 108 | fi |
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| 109 | if [ "$IPV6_AUTOCONF" = "yes" ]; then |
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| 110 | ipv6_local_auto=1 |
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| 111 | fi |
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| 112 | else |
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| 113 | # Global forwarding should be disabled |
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| 114 | |
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| 115 | # Check, if global IPv6 forwarding was already set by global script |
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| 116 | if [ $ipv6_global_forwarding_current -ne 0 ]; then |
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| 117 | echo $"Global IPv6 forwarding is disabled in configuration, but not currently disabled in kernel" |
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| 118 | echo $"Please restart network with '/sbin/service network restart'" |
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| 119 | fi |
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| 120 | |
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| 121 | ipv6_local_forwarding=0 |
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| 122 | ipv6_local_auto=1 |
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| 123 | if [ "$IPV6_AUTOCONF" = "no" ]; then |
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| 124 | ipv6_local_auto=0 |
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| 125 | fi |
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| 126 | fi |
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| 127 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.forwarding=$ipv6_local_forwarding >/dev/null 2>&1 |
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| 128 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_ra=$ipv6_local_auto >/dev/null 2>&1 |
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| 129 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_redirects=$ipv6_local_auto >/dev/null 2>&1 |
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| 130 | |
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| 131 | # Set IPv6 MTU, if given |
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| 132 | if [ -n "$IPV6_MTU" ]; then |
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| 133 | ipv6_set_mtu $DEVICE $IPV6_MTU |
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| 134 | fi |
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| 135 | |
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| 136 | # Setup additional IPv6 addresses from list, if given |
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| 137 | if [ -n "$IPV6ADDR_SECONDARIES" ]; then |
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| 138 | for ipv6addr in $IPV6ADDR_SECONDARIES; do |
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| 139 | ipv6_add_addr_on_device $DEVICE $ipv6addr |
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| 140 | done |
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| 141 | fi |
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| 142 | |
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| 143 | # Enable IPv6 RFC3041 privacy extensions if desired |
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| 144 | if [ "$IPV6_PRIVACY" = "rfc3041" ]; then |
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| 145 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.use_tempaddr=2 >/dev/null 2>&1 |
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| 146 | if [ $? -ne 0 ]; then |
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| 147 | echo $"Cannot enable IPv6 privacy method '$IPV6_PRIVACY', not supported by kernel" |
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| 148 | fi |
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| 149 | fi |
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| 150 | |
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| 151 | # Setup default IPv6 route, check are done by function |
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| 152 | if [ -n "$IPV6_DEFAULTDEV" -o -n "$IPV6_DEFAULTGW" ]; then |
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| 153 | ipv6_set_default_route "$IPV6_DEFAULTGW" "$IPV6_DEFAULTDEV" "$DEVICE" |
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| 154 | fi |
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| 155 | |
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| 156 | # Setup additional static IPv6 routes on specified interface, if given |
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| 157 | if [ -f /etc/sysconfig/static-routes-ipv6 ]; then |
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| 158 | LC_ALL=C grep -w "^$DEVICE" /etc/sysconfig/static-routes-ipv6 | while read device args; do |
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| 159 | ipv6_add_route $args $DEVICE |
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| 160 | done |
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| 161 | fi |
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| 162 | |
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| 163 | # Setup additional static IPv6 routes (newer config style) |
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| 164 | if [ -f "/etc/sysconfig/network-scripts/route6-$DEVICE" ]; then |
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| 165 | cat "/etc/sysconfig/network-scripts/route6-$DEVICE" | sed 's/#.*//g' | grep -v '^[[:space:]]*$' | while read line; do |
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| 166 | ipv6_exec_ip -6 route add $line |
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| 167 | done |
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| 168 | fi |
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| 169 | |
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| 170 | # Setup of 6to4, if configured |
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| 171 | if [ "$IPV6TO4INIT" = "yes" ]; then |
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| 172 | valid6to4config="yes" |
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| 173 | |
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| 174 | # Test device status of 6to4 tunnel |
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| 175 | ipv6_test_device_status tun6to4 |
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| 176 | if [ $? = 0 ]; then |
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| 177 | # device is already up |
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| 178 | echo $"Device 'tun6to4' (from '$DEVICE') is already up, shutdown first" |
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| 179 | exit 1 |
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| 180 | fi |
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| 181 | |
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| 182 | # Get IPv4 address for global 6to4 prefix calculation |
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| 183 | if [ -n "$IPV6TO4_IPV4ADDR" ]; then |
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| 184 | # Take special configured from config file (precedence 1) |
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| 185 | ipv4addr="$IPV6TO4_IPV4ADDR" |
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| 186 | |
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| 187 | # Get local IPv4 address from interface |
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| 188 | ipv4addrlocal="`ipv6_get_ipv4addr_of_device $DEVICE`" |
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| 189 | if [ -z "$ipv4addrlocal" ]; then |
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| 190 | # Take configured from config file |
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| 191 | ipv4addrlocal="$IPADDR" |
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| 192 | fi |
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| 193 | else |
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| 194 | # Get IPv4 address from interface first (has precedence 2) |
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| 195 | ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`" |
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| 196 | if [ -z "$ipv4addr" ]; then |
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| 197 | # Take configured from config file (precedence 3) |
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| 198 | ipv4addr="$IPADDR" |
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| 199 | fi |
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| 200 | ipv4addrlocal="$ipv4addr" |
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| 201 | fi |
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| 202 | |
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| 203 | if [ -n "$ipv4addr" ]; then |
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| 204 | if ! ipv6_test_ipv4_addr_global_usable $ipv4addr; then |
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| 205 | echo $"Given IPv4 address '$ipv4addr' is not globally usable" |
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| 206 | valid6to4config="no" |
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| 207 | fi |
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| 208 | if [ -z "$IPV6TO4_RELAY" ]; then |
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| 209 | IPV6TO4_RELAY="192.88.99.1" |
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| 210 | fi |
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| 211 | |
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| 212 | # Check/generate relay address |
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| 213 | ipv6to4_relay="`ipv6_create_6to4_relay_address $IPV6TO4_RELAY`" |
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| 214 | if [ $? -ne 0 ]; then |
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| 215 | valid6to4config="no" |
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| 216 | fi |
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| 217 | else |
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| 218 | echo $"IPv6to4 configuration needs an IPv4 address on related interface or otherwise specified" |
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| 219 | valid6to4config="no" |
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| 220 | fi |
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| 221 | |
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| 222 | # Setup 6to4 tunnel (hardwired name is "tun6to4"), if config is valid |
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| 223 | if [ "$valid6to4config" = "yes" ]; then |
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| 224 | # Get MTU of master device |
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| 225 | ipv4mtu="`ipv6_exec_ip link show dev $DEVICE | grep -w "mtu" | awk '{ print $5 }'`" |
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| 226 | if [ -n "$ipv4mtu" ]; then |
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| 227 | # IPv6 tunnel MTU is IPv4 MTU minus 20 for IPv4 header |
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| 228 | tunnelmtu=$[ $ipv4mtu - 20 ] |
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| 229 | fi |
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| 230 | |
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| 231 | if [ -n "$IPV6TO4_MTU" ]; then |
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| 232 | if [ $IPV6TO4_MTU -gt $tunnelmtu ]; then |
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| 233 | echo $"Warning: configured MTU '$IPV6TO4_MTU' for 6to4 exceeds maximum limit of '$tunnelmtu', ignored" |
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| 234 | else |
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| 235 | tunnelmtu=$IPV6TO4_MTU |
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| 236 | fi |
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| 237 | fi |
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| 238 | |
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| 239 | ipv6_add_6to4_tunnel tun6to4 $ipv4addr "" $tunnelmtu $ipv4addrlocal || exit 1 |
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| 240 | |
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| 241 | # Add route to for compatible addresses (removed later again) |
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| 242 | ipv6_add_route "::/96" "::" tun6to4 |
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| 243 | |
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| 244 | # Add default route, if device matches |
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| 245 | if [ "$IPV6_DEFAULTDEV" = "tun6to4" ]; then |
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| 246 | if [ -n "$IPV6_DEFAULTGW" ]; then |
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| 247 | echo $"Warning: interface 'tun6to4' does not support 'IPV6_DEFAULTGW', ignored" |
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| 248 | fi |
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| 249 | ipv6_set_default_route $ipv6to4_relay tun6to4 |
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| 250 | fi |
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| 251 | |
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| 252 | # Add static routes |
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| 253 | if [ -f /etc/sysconfig/static-routes-ipv6 ]; then |
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| 254 | LC_ALL=C grep -w "^tun6to4" /etc/sysconfig/static-routes-ipv6 | while read device network gateway; do |
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| 255 | if [ -z "$network" ]; then |
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| 256 | continue |
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| 257 | fi |
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| 258 | if [ -z "$gateway" ]; then |
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| 259 | gateway="$ipv6to4_relay" |
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| 260 | fi |
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| 261 | ipv6_add_route $network $gateway tun6to4 |
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| 262 | done |
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| 263 | fi |
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| 264 | |
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| 265 | # Setup additional static IPv6 routes (newer config style) |
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| 266 | if [ -f "/etc/sysconfig/network-scripts/route6-tun6to4" ]; then |
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| 267 | cat "/etc/sysconfig/network-scripts/route6-tun6to4" | sed 's/#.*//g' | LC_ALL=C grep -v '^[[:space:]]*$' | while read line; do |
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| 268 | if echo "$line" | LC_ALL=C grep -vq 'via'; then |
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| 269 | # Add gateway if missing |
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| 270 | line="$line via $ipv6to4_relay" |
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| 271 | fi |
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| 272 | ipv6_exec_ip -6 route add $line |
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| 273 | done |
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| 274 | fi |
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| 275 | |
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| 276 | # Cleanup autmatically generated autotunnel (not needed for 6to4) |
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| 277 | ipv6_del_route "::/96" "::" tun6to4 |
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| 278 | ipv6_del_addr_on_device tun6to4 "::$ipv4addrlocal/128" |
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| 279 | |
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| 280 | if [ "$IPV6_CONTROL_RADVD" = "yes" ]; then |
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| 281 | # RADVD is in use, so forwarding of IPv6 packets should be enabled, display warning |
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| 282 | if [ $ipv6_global_forwarding_current -ne 1 ]; then |
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| 283 | echo $"Using 6to4 and RADVD IPv6 forwarding usually should be enabled, but it isn't" |
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| 284 | fi |
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| 285 | |
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| 286 | if [ -n "$IPV6TO4_ROUTING" ]; then |
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| 287 | ipv6to4prefix="`ipv6_create_6to4_prefix $ipv4addr`" |
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| 288 | if [ -n "$ipv6to4prefix" ]; then |
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| 289 | # Add route to local networks |
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| 290 | for devsuf in $IPV6TO4_ROUTING; do |
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| 291 | dev="`echo $devsuf | awk -F- '{ print $1 }'`" |
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| 292 | suf="`echo $devsuf | awk -F- '{ print $2 }'`" |
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| 293 | ipv6_add_addr_on_device ${dev} ${ipv6to4prefix}${suf} |
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| 294 | done |
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| 295 | else |
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| 296 | echo $"Error occurred while calculating the IPv6to4 prefix" |
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| 297 | fi |
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| 298 | else |
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| 299 | echo $"radvd control enabled, but config is not complete" |
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| 300 | fi |
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| 301 | |
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| 302 | # Control running radvd |
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| 303 | ipv6_trigger_radvd up "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE |
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| 304 | fi |
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| 305 | else |
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| 306 | echo $"6to4 configuration is not valid" |
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| 307 | exit 1 |
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| 308 | fi |
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| 309 | fi |
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| 310 | |
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