1 | #!/bin/sh |
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2 | # |
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3 | # init.ipv6-global |
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4 | # |
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5 | # |
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6 | # Taken from: init.ipv6-global |
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7 | # (P) & (C) 2001-2005 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: 2005-01-04 |
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15 | # |
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16 | # Calling parameters: |
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17 | # $1: action (currently supported: start|stop|showsysctl) |
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18 | # $2: position for start|stop (currently supported: pre|post) |
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19 | # |
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20 | # Called by hooks from /etc/[rc.d/]init.d/network |
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21 | # |
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22 | # Uses following information from /etc/sysconfig/network: |
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23 | # IPV6FORWARDING=yes|no: controls global IPv6 forwarding (default: no) |
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24 | # IPV6_AUTOCONF=yes|no: controls global automatic IPv6 configuration |
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25 | # (default: yes if IPV6FORWARDING=no, no if IPV6FORWARDING=yes) |
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26 | # IPV6_AUTOTUNNEL=yes|no: controls automatic IPv6 tunneling (default: no) |
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27 | # IPV6_DEFAULTGW=<ipv6address[%interface]> [optional] |
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28 | # IPV6_DEFAULTDEV=<interface> [optional] |
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29 | # |
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30 | |
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31 | |
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32 | |
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33 | . /etc/sysconfig/network |
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34 | |
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35 | cd /etc/sysconfig/network-scripts |
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36 | . /etc/sysconfig/network-scripts/network-functions |
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37 | |
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38 | # Get action and hook position |
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39 | ACTION="$1" |
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40 | POSITION="$2" |
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41 | |
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42 | [ -f /etc/sysconfig/network-scripts/network-functions-ipv6 ] || exit 1 |
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43 | . /etc/sysconfig/network-scripts/network-functions-ipv6 |
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44 | |
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45 | # Initialize IPv6, depending on caller option |
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46 | case $ACTION in |
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47 | start) |
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48 | case $POSITION in |
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49 | pre) |
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50 | # IPv6 test, module loaded, exit if system is not IPv6-ready |
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51 | ipv6_test || exit 1 |
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52 | |
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53 | |
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54 | if [ "$IPV6FORWARDING" = "yes" ]; then |
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55 | ipv6_global_forwarding=1 |
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56 | ipv6_global_auto=0 |
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57 | else |
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58 | ipv6_global_forwarding=0 |
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59 | if [ "$IPV6_AUTOCONF" = "no" ]; then |
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60 | ipv6_global_auto=0 |
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61 | else |
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62 | ipv6_global_auto=1 |
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63 | fi |
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64 | fi |
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65 | |
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66 | # Reset IPv6 sysctl switches for "all", "default" and still existing devices |
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67 | for i in /proc/sys/net/ipv6/conf/* ; do |
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68 | interface=${i##*/} |
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69 | # Host/Router behaviour for the interface |
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70 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.forwarding=$ipv6_global_forwarding >/dev/null 2>&1 |
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71 | |
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72 | # Autoconfiguration and redirect handling for Hosts |
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73 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.accept_ra=$ipv6_global_auto >/dev/null 2>&1 |
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74 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.accept_redirects=$ipv6_global_auto >/dev/null 2>&1 |
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75 | done |
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76 | ;; |
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77 | |
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78 | post) |
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79 | # IPv6 test, module loaded, exit if system is not IPv6-ready |
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80 | ipv6_test || exit 1 |
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81 | |
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82 | |
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83 | if [ "$IPV6_AUTOTUNNEL" = "yes" ]; then |
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84 | ipv6_enable_autotunnel |
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85 | # autotunnel interface doesn't require a MTU setup |
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86 | fi |
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87 | |
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88 | ## Add some routes which should never appear on the wire |
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89 | # Unreachable IPv4-only addresses, normally blocked by source address selection |
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90 | ipv6_exec_ip route add unreach ::ffff:0.0.0.0/96 |
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91 | # Unreachable IPv4-mapped addresses |
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92 | ipv6_exec_ip route add unreach ::0.0.0.0/96 |
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93 | # Unreachable 6to4: IPv4 multicast, reserved, limited broadcast |
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94 | ipv6_exec_ip route add unreach 2002:e000::/19 |
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95 | # Unreachable 6to4: IPv4 loopback |
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96 | ipv6_exec_ip route add unreach 2002:7f00::/24 |
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97 | # Unreachable 6to4: IPv4 private (RFC 1918) |
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98 | ipv6_exec_ip route add unreach 2002:0a00::/24 |
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99 | ipv6_exec_ip route add unreach 2002:ac10::/28 |
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100 | ipv6_exec_ip route add unreach 2002:c0a8::/32 |
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101 | # Unreachable 6to4: IPv4 private (APIPA / DHCP link-local) |
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102 | ipv6_exec_ip route add unreach 2002:a9fe::/32 |
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103 | # Unreachable IPv6: 6bone test addresses |
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104 | ipv6_exec_ip route add unreach 3ffe:ffff::/32 |
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105 | |
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106 | # Set default route for autotunnel, if specified |
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107 | if [ "$IPV6_DEFAULTDEV" = "sit0" -a "$IPV6_AUTOTUNNEL" = "yes" ]; then |
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108 | if [ -n "$IPV6_DEFAULTGW" ]; then |
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109 | ipv6_set_default_route $IPV6_DEFAULTGW $IPV6_DEFAULTDEV sit0 |
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110 | elif [ -n "$IPV6_DEFAULTDEV" ]; then |
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111 | ipv6_set_default_route "" $IPV6_DEFAULTDEV sit0 |
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112 | fi |
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113 | fi |
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114 | ;; |
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115 | |
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116 | *) |
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117 | echo "Usage: $0 $1 {pre|post}" |
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118 | ;; |
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119 | |
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120 | esac |
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121 | ;; |
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122 | |
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123 | stop) |
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124 | case $POSITION in |
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125 | pre) |
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126 | # IPv6 test, no module loaded, exit if system is not IPv6-ready |
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127 | ipv6_test testonly || exit 0 |
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128 | |
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129 | |
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130 | ;; |
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131 | |
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132 | post) |
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133 | # IPv6 test, no module loaded, exit if system is not IPv6-ready |
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134 | ipv6_test testonly || exit 0 |
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135 | |
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136 | |
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137 | for i in /proc/sys/net/ipv6/conf/* ; do |
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138 | interface=${i##*/} |
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139 | # Assume Host behaviour |
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140 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.forwarding=0 >/dev/null 2>&1 |
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141 | |
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142 | # Disable autoconfiguration and redirects |
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143 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.accept_ra=0 >/dev/null 2>&1 |
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144 | ipv6_exec_sysctl -w net.ipv6.conf.$interface.accept_redirects=0 >/dev/null 2>&1 |
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145 | done |
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146 | |
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147 | # Cleanup still existing tunnel devices |
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148 | ipv6_cleanup_tunnel_devices |
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149 | |
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150 | # Shut down generic tunnel interface now |
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151 | ipv6_exec_ip link set sit0 down |
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152 | ;; |
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153 | |
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154 | *) |
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155 | echo "Usage: $0 $1 {pre|post}" |
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156 | ;; |
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157 | |
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158 | esac |
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159 | ;; |
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160 | |
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161 | restart|reload) |
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162 | # do nothing, will be handled by main script |
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163 | ;; |
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164 | |
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165 | showsysctl) |
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166 | # Run only basic tests, no module is loaded, if not ok, skip IPv6 initialization |
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167 | ipv6_test testonly || exit 0 |
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168 | |
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169 | # Show sysctl switches |
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170 | sysctl net.ipv6.conf.default |awk -F '.' '{ print gensub(" =.*","","G",$5) }' | while read switch; do |
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171 | for i in /proc/sys/net/ipv6/conf/* ; do |
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172 | interface=${i##*/} |
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173 | sysctl net.ipv6.conf.$interface.$switch |
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174 | done |
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175 | echo |
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176 | done |
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177 | ;; |
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178 | |
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179 | *) |
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180 | echo $"Usage: $0 {start|stop|reload|restart|showsysctl}" |
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181 | exit 1 |
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182 | ;; |
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183 | esac |
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