1 | #!/bin/sh |
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2 | # |
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3 | # ifdown-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) 2000-2004 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 2005-09-22 |
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15 | # |
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16 | # Note: if called as (like normally) by /etc/sysconfig/network-scripts/ifdown |
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17 | # exit codes aren't handled by "ifdown" |
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18 | # |
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19 | # Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1: |
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20 | # DEVICE=<device> |
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21 | # IPV6INIT=yes|no: controls IPv6 configuration for this interface |
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22 | # |
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23 | # Optional for 6to4 tunneling: |
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24 | # IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay [default: 192.88.99.1] |
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25 | # IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup internal interfaces |
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26 | # |
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27 | # Optional for 6to4 tunneling links to trigger radvd: |
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28 | # IPV6_CONTROL_RADVD=yes|no: controls radvd triggering [optional] |
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29 | # IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" [optional] |
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30 | # IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd [optional, default is SIGHUP] |
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31 | # |
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32 | # Required version of radvd to use 6to4 prefix recalculation |
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33 | # 0.6.2p3 or newer supporting option "Base6to4Interface" |
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34 | # Required version of radvd to use dynamic ppp links |
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35 | # 0.7.0 + fixes or newer |
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36 | # |
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37 | |
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38 | |
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39 | . /etc/sysconfig/network |
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40 | |
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41 | cd /etc/sysconfig/network-scripts |
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42 | . ./network-functions |
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43 | |
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44 | CONFIG=$1 |
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45 | [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG |
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46 | source_config |
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47 | |
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48 | # IPv6 don't need aliases anymore, config is skipped |
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49 | REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'` |
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50 | [ "$DEVICE" != "$REALDEVICE" ] && exit 0 |
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51 | |
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52 | [ -f /etc/sysconfig/network-scripts/network-functions-ipv6 ] || exit 1 |
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53 | . /etc/sysconfig/network-scripts/network-functions-ipv6 |
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54 | |
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55 | |
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56 | # IPv6 test, no module loaded, exit if system is not IPv6-ready |
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57 | ipv6_test testonly || exit 0 |
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58 | |
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59 | # Test device status |
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60 | ipv6_test_device_status $DEVICE |
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61 | if [ $? != 0 -a $? != 11 ]; then |
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62 | # device doesn't exist or other problem occurs |
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63 | exit 1 |
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64 | fi |
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65 | |
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66 | # Switch some sysctls to secure mode |
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67 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.forwarding=0 >/dev/null 2>&1 |
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68 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_ra=0 >/dev/null 2>&1 |
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69 | ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_redirects=0 >/dev/null 2>&1 |
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70 | |
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71 | # Test status of tun6to4 device |
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72 | ipv6_test_device_status tun6to4 |
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73 | if [ $? = 0 -o $? = 11 ]; then |
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74 | # Device exists |
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75 | valid6to4config="yes" |
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76 | |
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77 | if [ -z "$IPV6TO4_RELAY" ]; then |
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78 | IPV6TO4_RELAY="192.88.99.1" |
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79 | fi |
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80 | |
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81 | # Get IPv4 address from interface |
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82 | if [ -n "$IPV6TO4_IPV4ADDR" ]; then |
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83 | # Take special configured from config file (precedence 1) |
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84 | ipv4addr="$IPV6TO4_IPV4ADDR" |
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85 | |
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86 | # Get IPv4 address from interface first |
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87 | ipv4addrlocal="`ipv6_get_ipv4addr_of_device $DEVICE`" |
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88 | if [ -z "$ipv4addrlocal" ]; then |
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89 | # Take configured from config file |
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90 | ipv4addrlocal="$IPADDR" |
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91 | fi |
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92 | else |
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93 | # Get IPv4 address from interface first (has precedence 2) |
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94 | ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`" |
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95 | if [ -z "$ipv4addr" ]; then |
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96 | # Take configured from config file (precedence 3) |
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97 | ipv4addr="$IPADDR" |
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98 | fi |
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99 | ipv4addrlocal="$ipv4addr" |
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100 | fi |
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101 | |
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102 | # Get local IPv4 address of dedicated tunnel |
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103 | ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`" |
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104 | |
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105 | if [ -z "$ipv4addrlocal" -o -z "$ipv4addr6to4local" ]; then |
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106 | # no IPv4 addresses given, 6to4 sure not configured |
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107 | valid6to4config="no" |
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108 | else |
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109 | # Check against configured 6to4 tunnel to see if this interface was used before |
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110 | if [ "$ipv4addrlocal" != "$ipv4addr6to4local" ]; then |
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111 | # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup |
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112 | valid6to4config="no" |
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113 | fi |
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114 | fi |
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115 | |
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116 | fi |
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117 | |
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118 | # Shutdown of 6to4, if configured |
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119 | if [ "$valid6to4config" = "yes" ]; then |
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120 | if [ -n "$IPV6TO4_ROUTING" ]; then |
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121 | # Delete routes to local networks |
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122 | for devsuf in $IPV6TO4_ROUTING; do |
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123 | dev="`echo $devsuf | awk -F- '{ print $1 }'`" |
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124 | ipv6_cleanup_6to4_device $dev |
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125 | done |
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126 | fi |
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127 | |
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128 | # Delete all configured 6to4 address |
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129 | ipv6_cleanup_6to4_tunnels tun6to4 |
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130 | |
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131 | # Control running radvd |
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132 | ipv6_trigger_radvd down "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE |
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133 | fi |
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134 | |
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135 | # Delete all current configured IPv6 addresses on this interface |
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136 | ipv6_cleanup_device $DEVICE |
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