netbsd revision 1.1.1.1.2.2
1 #!/bin/sh 2 3 make_resolv_conf() { 4 if [ "x$new_domain_name" != x ] && [ x"$new_domain_name_servers" != x ]; then 5 cat /dev/null > /etc/resolv.conf.dhclient 6 if [ "x$new_domain_search" != x ]; then 7 echo search $new_domain_search >> /etc/resolv.conf.dhclient 8 elif [ "x$new_domain_name" != x ]; then 9 # Note that the DHCP 'Domain Name Option' is really just a domain 10 # name, and that this practice of using the domain name option as 11 # a search path is both nonstandard and deprecated. 12 echo search $new_domain_name >> /etc/resolv.conf.dhclient 13 fi 14 for nameserver in $new_domain_name_servers; do 15 echo nameserver $nameserver >>/etc/resolv.conf.dhclient 16 done 17 18 mv /etc/resolv.conf.dhclient /etc/resolv.conf 19 elif [ "x${new_dhcp6_name_servers}" != x ] ; then 20 cat /dev/null > /etc/resolv.conf.dhclient6 21 chmod 644 /etc/resolv.conf.dhclient6 22 23 if [ "x${new_dhcp6_domain_search}" != x ] ; then 24 echo search ${new_dhcp6_domain_search} >> /etc/resolv.conf.dhclient6 25 fi 26 for nameserver in ${new_dhcp6_name_servers} ; do 27 # If the nameserver has a link-local address 28 # add a <zone_id> (interface name) to it. 29 case $nameserver in 30 fe80:*) zone_id="%$interface";; 31 FE80:*) zone_id="%$interface";; 32 *) zone_id="";; 33 esac 34 echo nameserver ${nameserver}$zone_id >> /etc/resolv.conf.dhclient6 35 done 36 37 mv /etc/resolv.conf.dhclient6 /etc/resolv.conf 38 fi 39 } 40 41 # Must be used on exit. Invokes the local dhcp client exit hooks, if any. 42 exit_with_hooks() { 43 exit_status=$1 44 if [ -f /etc/dhclient-exit-hooks ]; then 45 . /etc/dhclient-exit-hooks 46 fi 47 # probably should do something with exit status of the local script 48 exit $exit_status 49 } 50 51 # This function was largely borrowed from dhclient-script that 52 # ships with Centos, authored by Jiri Popelka and David Cantrell 53 # of Redhat. Thanks guys. 54 add_ipv6_addr_with_DAD() { 55 ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} alias 56 57 if [ ${dad_wait_time} -le 0 ] 58 then 59 # if we're not waiting for DAD, assume we're good 60 return 0 61 fi 62 63 # Repeatedly test whether newly added address passed 64 # duplicate address detection (DAD) 65 for i in $(seq 1 ${dad_wait_time}); do 66 sleep 1 # give the DAD some time 67 68 addr=$(ifconfig ${interface} \ 69 | grep "${new_ip6_address} prefixlen ${new_ip6_prefixlen}") 70 71 # tentative flag == DAD is still not complete 72 tentative=$(echo "${addr}" | grep tentative) 73 # dadfailed flag == address is already in use somewhere else 74 dadfailed=$(echo "${addr}" | grep duplicated) 75 76 if [ -n "${dadfailed}" ] ; then 77 # dad failed, remove the address 78 ifconfig ${interface} inet6 ${new_ip6_address}/${new_ip6_prefixlen} -alias 79 exit_with_hooks 3 80 fi 81 82 if [ -z "${tentative}" ] ; then 83 if [ -n "${addr}" ]; then 84 # DAD is over 85 return 0 86 else 87 # address was auto-removed (or not added at all) 88 exit_with_hooks 3 89 fi 90 fi 91 done 92 93 return 0 94 } 95 96 # Invoke the local dhcp client enter hooks, if they exist. 97 if [ -f /etc/dhclient-enter-hooks ]; then 98 exit_status=0 99 . /etc/dhclient-enter-hooks 100 # allow the local script to abort processing of this state 101 # local script must set exit_status variable to nonzero. 102 if [ $exit_status -ne 0 ]; then 103 exit $exit_status 104 fi 105 fi 106 107 if [ x$new_network_number != x ]; then 108 echo New Network Number: $new_network_number 109 fi 110 111 if [ x$new_broadcast_address != x ]; then 112 echo New Broadcast Address: $new_broadcast_address 113 new_broadcast_arg="broadcast $new_broadcast_address" 114 fi 115 if [ x$old_broadcast_address != x ]; then 116 old_broadcast_arg="broadcast $old_broadcast_address" 117 fi 118 if [ x$new_subnet_mask != x ]; then 119 new_netmask_arg="netmask $new_subnet_mask" 120 fi 121 if [ x$old_subnet_mask != x ]; then 122 old_netmask_arg="netmask $old_subnet_mask" 123 fi 124 if [ x$alias_subnet_mask != x ]; then 125 alias_subnet_arg="netmask $alias_subnet_mask" 126 fi 127 if [ x$new_interface_mtu != x ]; then 128 mtu_arg="mtu $new_interface_mtu" 129 fi 130 if [ x$IF_METRIC != x ]; then 131 metric_arg="metric $IF_METRIC" 132 fi 133 134 if [ x$reason = xMEDIUM ]; then 135 eval "ifconfig $interface $medium" 136 eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1 137 sleep 1 138 exit_with_hooks 0 139 fi 140 141 ### 142 ### DHCPv4 Handlers 143 ### 144 145 if [ x$reason = xPREINIT ]; then 146 if [ x$alias_ip_address != x ]; then 147 ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 148 route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 149 fi 150 ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \ 151 broadcast 255.255.255.255 up 152 exit_with_hooks 0 153 fi 154 155 if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then 156 exit_with_hooks 0 157 fi 158 159 if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \ 160 [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then 161 current_hostname=`hostname` 162 if [ x$current_hostname = x ] || \ 163 [ x$current_hostname = x$old_host_name ]; then 164 if [ x$current_hostname = x ] || \ 165 [ x$new_host_name != x$old_host_name ]; then 166 hostname $new_host_name 167 fi 168 fi 169 170 if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \ 171 [ x$alias_ip_address != x$old_ip_address ]; then 172 ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 173 route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 174 fi 175 if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ] 176 then 177 eval "ifconfig $interface inet -alias $old_ip_address $medium" 178 route delete $old_ip_address 127.1 >/dev/null 2>&1 179 for router in $old_routers; do 180 route delete default $router >/dev/null 2>&1 181 done 182 if [ "$old_static_routes" != "" ]; then 183 set $old_static_routes 184 while [ $# -gt 1 ]; do 185 route delete $1 $2 186 shift; shift 187 done 188 fi 189 arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' |sh 190 fi 191 if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \ 192 [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then 193 eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \ 194 $new_broadcast_arg $mtu_arg $metric_arg $medium" 195 route add $new_ip_address 127.1 >/dev/null 2>&1 196 for router in $new_routers; do 197 route add default $router >/dev/null 2>&1 198 done 199 if [ "$new_static_routes" != "" ]; then 200 set $new_static_routes 201 while [ $# -gt 1 ]; do 202 route add $1 $2 203 shift; shift 204 done 205 fi 206 else 207 # we haven't changed the address, have we changed other options 208 # that we wish to update? 209 if [ x$new_routers != x ] && [ x$new_routers != x$old_routers ] ; then 210 # if we've changed routers delete the old and add the new. 211 $LOGGER "New Routers: $new_routers" 212 for router in $old_routers; do 213 route delete default $router >/dev/null 2>&1 214 done 215 for router in $new_routers; do 216 route add default $router >/dev/null 2>&1 217 done 218 fi 219 fi 220 if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ]; 221 then 222 ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg 223 route add $alias_ip_address 127.0.0.1 224 fi 225 make_resolv_conf 226 exit_with_hooks 0 227 fi 228 229 if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \ 230 || [ x$reason = xSTOP ]; then 231 if [ x$alias_ip_address != x ]; then 232 ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 233 route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 234 fi 235 if [ x$old_ip_address != x ]; then 236 eval "ifconfig $interface inet -alias $old_ip_address $medium" 237 route delete $old_ip_address 127.1 >/dev/null 2>&1 238 for router in $old_routers; do 239 route delete default $router >/dev/null 2>&1 240 done 241 if [ "$old_static_routes" != "" ]; then 242 set $old_static_routes 243 while [ $# -gt 1 ]; do 244 route delete $1 $2 245 shift; shift 246 done 247 fi 248 arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' \ 249 |sh >/dev/null 2>&1 250 fi 251 if [ x$alias_ip_address != x ]; then 252 ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg 253 route add $alias_ip_address 127.0.0.1 254 fi 255 exit_with_hooks 0 256 fi 257 258 if [ x$reason = xTIMEOUT ]; then 259 if [ x$alias_ip_address != x ]; then 260 ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 261 route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 262 fi 263 eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \ 264 $new_broadcast_arg $mtu_arg $metric_arg $medium" 265 sleep 1 266 if [ "$new_routers" != "" ]; then 267 set $new_routers 268 if ping -q -c 1 -w 1 $1; then 269 if [ x$new_ip_address != x$alias_ip_address ] && \ 270 [ x$alias_ip_address != x ]; then 271 ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg 272 route add $alias_ip_address 127.0.0.1 273 fi 274 route add $new_ip_address 127.1 >/dev/null 2>&1 275 for router in $new_routers; do 276 route add default $router >/dev/null 2>&1 277 done 278 set $new_static_routes 279 while [ $# -gt 1 ]; do 280 route add $0 $1 281 shift; shift 282 done 283 make_resolv_conf 284 exit_with_hooks 0 285 fi 286 fi 287 eval "ifconfig $interface inet -alias $new_ip_address $medium" 288 for router in $old_routers; do 289 route delete default $router >/dev/null 2>&1 290 done 291 if [ "$old_static_routes" != "" ]; then 292 set $old_static_routes 293 while [ $# -gt 1 ]; do 294 route delete $1 $2 295 shift; shift 296 done 297 fi 298 arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' \ 299 |sh >/dev/null 2>&1 300 exit_with_hooks 1 301 fi 302 303 ### 304 ### DHCPv6 Handlers 305 ### 306 307 if [ ${reason} = PREINIT6 ] ; then 308 # Ensure interface is up. 309 ifconfig ${interface} up 310 311 # XXX: Remove any stale addresses from aborted clients. 312 313 # We need to give the kernel some time to active interface 314 interface_up_wait_time=5 315 for i in $(seq 0 ${interface_up_wait_time}) 316 do 317 ifconfig ${interface} | grep inactive >/dev/null 2>&1 318 if [ $? -ne 0 ]; then 319 break; 320 fi 321 sleep 1 322 done 323 324 # Wait for duplicate address detection for this interface if the 325 # --dad-wait-time parameter has been specified and is greater than 326 # zero. 327 if [ ${dad_wait_time} -gt 0 ]; then 328 # Check if any IPv6 address on this interface is marked as 329 # tentative. 330 ifconfig ${interface} | grep inet6 | grep tentative \ 331 >/dev/null 2>&1 332 if [ $? -eq 0 ]; then 333 # Wait for duplicate address detection to complete or for 334 # the timeout specified as --dad-wait-time. 335 for i in $(seq 0 $dad_wait_time) 336 do 337 # We're going to poll for the tentative flag every second. 338 sleep 1 339 ifconfig ${interface} | grep inet6 | grep tentative \ 340 >/dev/null 2>&1 341 if [ $? -ne 0 ]; then 342 break; 343 fi 344 done 345 fi 346 fi 347 348 exit_with_hooks 0 349 fi 350 351 if [ x${old_ip6_prefix} != x ] || [ x${new_ip6_prefix} != x ] ; then 352 echo Prefix ${reason} old=${old_ip6_prefix} new=${new_ip6_prefix} 353 354 exit_with_hooks 0 355 fi 356 357 if [ ${reason} = BOUND6 ] ; then 358 if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then 359 exit_with_hooks 2; 360 fi 361 362 # Add address to interface, check for DAD if dad_wait_time > 0 363 add_ipv6_addr_with_DAD 364 365 # Check for nameserver options. 366 make_resolv_conf 367 368 exit_with_hooks 0 369 fi 370 371 if [ ${reason} = RENEW6 ] || [ ${reason} = REBIND6 ] ; then 372 # Make sure nothing has moved around on us. 373 374 # Nameservers/domains/etc. 375 if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] || 376 [ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ] ; then 377 make_resolv_conf 378 fi 379 380 exit_with_hooks 0 381 fi 382 383 if [ ${reason} = DEPREF6 ] ; then 384 if [ x${new_ip6_prefixlen} = x ] ; then 385 exit_with_hooks 2; 386 fi 387 388 # XXX: 389 # There doesn't appear to be a way to update an addr to indicate 390 # preference. 391 392 exit_with_hooks 0 393 fi 394 395 if [ ${reason} = EXPIRE6 -o ${reason} = RELEASE6 -o ${reason} = STOP6 ] ; then 396 if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then 397 exit_with_hooks 2; 398 fi 399 400 ifconfig ${interface} inet6 -alias ${old_ip6_address}/${old_ip6_prefixlen} 401 402 exit_with_hooks 0 403 fi 404 405 exit_with_hooks 0 406
Indexes created Mon Mar 23 00:23:30 UTC 2026