network.subr revision 157706
137Srgrimes# 237Srgrimes# Copyright (c) 2003 The FreeBSD Project. All rights reserved. 337Srgrimes# 437Srgrimes# Redistribution and use in source and binary forms, with or without 537Srgrimes# modification, are permitted provided that the following conditions 637Srgrimes# are met: 737Srgrimes# 1. Redistributions of source code must retain the above copyright 837Srgrimes# notice, this list of conditions and the following disclaimer. 937Srgrimes# 2. Redistributions in binary form must reproduce the above copyright 1037Srgrimes# notice, this list of conditions and the following disclaimer in the 1137Srgrimes# documentation and/or other materials provided with the distribution. 1237Srgrimes# 1337Srgrimes# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 1437Srgrimes# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1537Srgrimes# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1637Srgrimes# ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 17# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23# SUCH DAMAGE. 24# 25# $FreeBSD: head/etc/network.subr 157706 2006-04-13 06:50:46Z brooks $ 26# 27 28# 29# Subroutines commonly used from network startup scripts. 30# Requires that rc.conf be loaded first. 31# 32 33# ifconfig_up if 34# Evaluate ifconfig(8) arguments for interface $if and 35# run ifconfig(8) with those arguments. It returns 0 if 36# arguments were found and executed or 1 if the interface 37# had no arguments. Pseudo arguments DHCP and WPA are handled 38# here. 39# 40ifconfig_up() 41{ 42 _cfg=1 43 44 ifconfig_args=`ifconfig_getargs $1` 45 if [ -n "${ifconfig_args}" ]; then 46 ifconfig $1 up 47 ifconfig $1 ${ifconfig_args} 48 _cfg=0 49 fi 50 51 if wpaif $1; then 52 if [ $_cfg -ne 0 ] ; then 53 ifconfig $1 up 54 fi 55 /etc/rc.d/wpa_supplicant start $1 56 _cfg=0 # XXX: not sure this should count 57 fi 58 59 if dhcpif $1; then 60 if [ $_cfg -ne 0 ] ; then 61 ifconfig $1 up 62 fi 63 if syncdhcpif $1; then 64 /etc/rc.d/dhclient start $1 65 fi 66 _cfg=0 67 fi 68 69 return $_cfg 70} 71 72# ifconfig_down if 73# Remove all inet entries from the $if interface. It returns 74# 0 if inet entries were found and removed. It returns 1 if 75# no entries were found or they could not be removed. 76# 77# XXX: should not be only inet 78# 79ifconfig_down() 80{ 81 [ -z "$1" ] && return 1 82 _ifs="^" 83 _cfg=1 84 85 inetList="`ifconfig $1 | grep 'inet ' | tr "\n" "$_ifs"`" 86 87 oldifs="$IFS" 88 IFS="$_ifs" 89 for _inet in $inetList ; do 90 # get rid of extraneous line 91 [ -z "$_inet" ] && break 92 93 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'` 94 95 IFS="$oldifs" 96 ifconfig $1 ${_inet} delete 97 IFS="$_ifs" 98 _cfg=0 99 done 100 IFS="$oldifs" 101 102 if wpaif $1; then 103 /etc/rc.d/wpa_supplicant stop $1 104 _cfg=0 105 fi 106 107 if dhcpif $1; then 108 /etc/rc.d/dhclient stop $1 109 _cfg=0 110 fi 111 112 ifconfig $1 down 113 114 return $_cfg 115} 116 117# get_if_var if var [default] 118# Return the value of the pseudo-hash corresponding to $if where 119# $var is a string containg the sub-string "IF" which will be 120# replaced with $if after the characters defined in _punct are 121# replaced with '_'. If the variable is unset, replace it with 122# $default if given. 123get_if_var() 124{ 125 if [ $# -ne 2 -a $# -ne 3 ]; then 126 err 3 'USAGE: get_if_var name var [default]' 127 fi 128 129 _if=$1 130 _punct=". - / +" 131 for _punct_c in $punct; do 132 _if=`ltr ${_if} ${_punct_c} '_'` 133 done 134 _var=$2 135 _default=$3 136 137 prefix=${_var%%IF*} 138 suffix=${_var##*IF} 139 eval echo \${${prefix}${_if}${suffix}-${_default}} 140} 141 142# _ifconfig_getargs if 143# Echos the arguments for the supplied interface to stdout. 144# returns 1 if empty. In general, ifconfig_getargs should be used 145# outside this file. 146_ifconfig_getargs() 147{ 148 _ifn=$1 149 if [ -z "$_ifn" ]; then 150 return 1 151 fi 152 153 get_if_var $_ifn ifconfig_IF "$ifconfig_DEFAULT" 154} 155 156# ifconfig_getargs if 157# Takes the result from _ifconfig_getargs and removes pseudo 158# args such as DHCP and WPA. 159ifconfig_getargs() 160{ 161 _tmpargs=`_ifconfig_getargs $1` 162 if [ $? -eq 1 ]; then 163 return 1 164 fi 165 _args= 166 167 for _arg in $_tmpargs; do 168 case $_arg in 169 [Dd][Hh][Cc][Pp]) ;; 170 [Nn][Oo][Aa][Uu][Tt][Oo]) ;; 171 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 172 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 173 [Ww][Pp][Aa]) ;; 174 *) 175 _args="$_args $_arg" 176 ;; 177 esac 178 done 179 180 echo $_args 181} 182 183# autoif 184# Returns 0 if the interface should be automaticly configured at 185# boot time and 1 otherwise. 186autoif() 187{ 188 _tmpargs=`_ifconfig_getargs $1` 189 for _arg in $_tmpargs; do 190 case $_arg in 191 [Nn][Oo][Aa][Uu][Tt][Oo]) 192 return 1 193 ;; 194 esac 195 done 196 return 0 197} 198 199# dhcpif if 200# Returns 0 if the interface is a DHCP interface and 1 otherwise. 201dhcpif() 202{ 203 _tmpargs=`_ifconfig_getargs $1` 204 for _arg in $_tmpargs; do 205 case $_arg in 206 [Dd][Hh][Cc][Pp]) 207 return 0 208 ;; 209 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 210 return 0 211 ;; 212 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 213 return 0 214 ;; 215 esac 216 done 217 return 1 218} 219 220# syncdhcpif 221# Returns 0 if the interface should be configured synchronously and 222# 1 otherwise. 223syncdhcpif() 224{ 225 _tmpargs=`_ifconfig_getargs $1` 226 for _arg in $_tmpargs; do 227 case $_arg in 228 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 229 return 1 230 ;; 231 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 232 return 0 233 ;; 234 esac 235 done 236 if checkyesno syncronous_dhclient; then 237 return 0 238 else 239 return 1 240 fi 241} 242 243# wpaif if 244# Returns 0 if the interface is a WPA interface and 1 otherwise. 245wpaif() 246{ 247 _tmpargs=`_ifconfig_getargs $1` 248 for _arg in $_tmpargs; do 249 case $_arg in 250 [Ww][Pp][Aa]) 251 return 0 252 ;; 253 esac 254 done 255 return 1 256} 257 258# ipv4_up if 259# add IPv4 addresses to the interface $if 260ipv4_up() 261{ 262 _if=$1 263 ifalias_up ${_if} 264 ipv4_addrs_common ${_if} alias 265} 266 267# ipv4_down if 268# remove IPv4 addresses from the interface $if 269ipv4_down() 270{ 271 _if=$1 272 ifalias_down ${_if} 273 ipv4_addrs_common ${_if} -alias 274} 275 276# ipv4_addrs_common if action 277# Evaluate the ifconfig_if_ipv4 arguments for interface $if 278# and use $action to add or remove IPv4 addresses from $if. 279ipv4_addrs_common() 280{ 281 _ret=1 282 _if=$1 283 _action=$2 284 285 # get ipv4-addresses 286 cidr_addr=`get_if_var $_if ipv4_addrs_IF` 287 288 for _cidr in ${cidr_addr}; do 289 _ipaddr=${_cidr%%/*} 290 _netmask="/"${_cidr##*/} 291 _range=${_ipaddr##*.} 292 _ipnet=${_ipaddr%.*} 293 _iplow=${_range%-*} 294 _iphigh=${_range#*-} 295 296 # clear netmask when removing aliases 297 if [ "${_action}" = "-alias" ]; then 298 _netmask="" 299 fi 300 301 _ipcount=${_iplow} 302 while [ "${_ipcount}" -le "${_iphigh}" ]; do 303 eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}" 304 _ipcount=$((${_ipcount}+1)) 305 _ret=0 306 307 # only the first ipaddr in a subnet need the real netmask 308 if [ "${_action}" != "-alias" ]; then 309 _netmask="/32" 310 fi 311 done 312 done 313 return $_ret 314} 315 316# ifalias_up if 317# Configure aliases for network interface $if. 318# It returns 0 if at least one alias was configured or 319# 1 if there were none. 320# 321ifalias_up() 322{ 323 _ret=1 324 alias=0 325 while : ; do 326 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 327 if [ -n "${ifconfig_args}" ]; then 328 ifconfig $1 ${ifconfig_args} alias 329 alias=$((${alias} + 1)) 330 _ret=0 331 else 332 break 333 fi 334 done 335 return $_ret 336} 337 338#ifalias_down if 339# Remove aliases for network interface $if. 340# It returns 0 if at least one alias was removed or 341# 1 if there were none. 342# 343ifalias_down() 344{ 345 _ret=1 346 alias=0 347 while : ; do 348 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 349 if [ -n "${ifconfig_args}" ]; then 350 ifconfig $1 ${ifconfig_args} -alias 351 alias=$((${alias} + 1)) 352 _ret=0 353 else 354 break 355 fi 356 done 357 return $_ret 358} 359 360# ifscript_up if 361# Evaluate a startup script for the $if interface. 362# It returns 0 if a script was found and processed or 363# 1 if no script was found. 364# 365ifscript_up() 366{ 367 if [ -r /etc/start_if.$1 ]; then 368 . /etc/start_if.$1 369 return 0 370 fi 371 return 1 372} 373 374# ifscript_down if 375# Evaluate a shutdown script for the $if interface. 376# It returns 0 if a script was found and processed or 377# 1 if no script was found. 378# 379ifscript_down() 380{ 381 if [ -r /etc/stop_if.$1 ]; then 382 . /etc/stop_if.$1 383 return 0 384 fi 385 return 1 386} 387 388# Create cloneable interfaces. 389# 390clone_up() 391{ 392 _prefix= 393 _list= 394 for ifn in ${cloned_interfaces}; do 395 ifconfig ${ifn} create 396 if [ $? -eq 0 ]; then 397 _list="${_list}${_prefix}${ifn}" 398 [ -z "$_prefix" ] && _prefix=' ' 399 fi 400 done 401 debug "Cloned: ${_list}" 402} 403 404# Destroy cloned interfaces. Destroyed interfaces are echoed 405# to standard output. 406# 407clone_down() 408{ 409 _prefix= 410 _list= 411 for ifn in ${cloned_interfaces}; do 412 ifconfig ${ifn} destroy 413 if [ $? -eq 0 ]; then 414 _list="${_list}${_prefix}${ifn}" 415 [ -z "$_prefix" ] && _prefix=' ' 416 fi 417 done 418 debug "Destroyed clones: ${_list}" 419} 420 421gif_up() { 422 case ${gif_interfaces} in 423 [Nn][Oo] | '') 424 ;; 425 *) 426 for i in ${gif_interfaces}; do 427 peers=`get_if_var $i gifconfig_IF` 428 case ${peers} in 429 '') 430 continue 431 ;; 432 *) 433 ifconfig $i create >/dev/null 2>&1 434 ifconfig $i tunnel ${peers} 435 ifconfig $i up 436 ;; 437 esac 438 done 439 ;; 440 esac 441} 442 443# 444# ipx_up ifn 445# Configure any IPX addresses for interface $ifn. Returns 0 if IPX 446# arguments were found and configured; returns 1 otherwise. 447# 448ipx_up() 449{ 450 ifn="$1" 451 ifconfig_args=`get_if_var $ifn ifconfig_IF_ipx` 452 if [ -n "${ifconfig_args}" ]; then 453 ifconfig ${ifn} ${ifconfig_args} 454 return 0 455 fi 456 return 1 457} 458 459# ipx_down ifn 460# Remove IPX addresses for interface $ifn. Returns 0 if IPX 461# addresses were found and unconfigured. It returns 1, otherwise. 462# 463ipx_down() 464{ 465 [ -z "$1" ] && return 1 466 _ifs="^" 467 _ret=1 468 469 ipxList="`ifconfig $1 | grep 'ipx ' | tr "\n" "$_ifs"`" 470 471 oldifs="$IFS" 472 IFS="$_ifs" 473 for _ipx in $ipxList ; do 474 # get rid of extraneous line 475 [ -z "$_ipx" ] && break 476 477 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'` 478 479 IFS="$oldifs" 480 ifconfig $1 ${_ipx} delete 481 IFS="$_ifs" 482 _ret=0 483 done 484 IFS="$oldifs" 485 486 return $_ret 487} 488 489# ifnet_rename 490# Rename all requested interfaces. 491# 492ifnet_rename() 493{ 494 495 _ifn_list="`ifconfig -l`" 496 [ -z "$_ifn_list" ] && return 0 497 for _if in ${_ifn_list} ; do 498 _ifname=`get_if_var $_if ifconfig_IF_name` 499 if [ ! -z "$_ifname" ]; then 500 ifconfig $_if name $_ifname 501 fi 502 done 503 return 0 504} 505 506# 507# list_net_interfaces type 508# List all network interfaces. The type of interface returned 509# can be controlled by the type argument. The type 510# argument can be any of the following: 511# nodhcp - all interfaces, excluding DHCP configured interfaces 512# dhcp - list only DHCP configured interfaces 513# If no argument is specified all network interfaces are output. 514# Note that the list will include cloned interfaces if applicable. 515# Cloned interfaces must already exist to have a chance to appear 516# in the list if ${network_interfaces} is set to `auto'. 517# 518list_net_interfaces() 519{ 520 type=$1 521 522 # Get a list of ALL the interfaces and make lo0 first if it's there. 523 # 524 case ${network_interfaces} in 525 [Aa][Uu][Tt][Oo]) 526 _prefix='' 527 _autolist="`ifconfig -l`" 528 _lo= 529 for _if in ${_autolist} ; do 530 if autoif $_if; then 531 if [ "$_if" = "lo0" ]; then 532 _lo="lo0 " 533 else 534 _tmplist="${_tmplist}${_prefix}${_if}" 535 [ -z "$_prefix" ] && _prefix=' ' 536 fi 537 fi 538 done 539 _tmplist="${_lo}${_tmplist}" 540 ;; 541 *) 542 _tmplist="${network_interfaces} ${cloned_interfaces}" 543 ;; 544 esac 545 546 if [ -z "$type" ]; then 547 echo $_tmplist 548 return 0 549 fi 550 551 # Separate out dhcp and non-dhcp interfaces 552 # 553 _aprefix= 554 _bprefix= 555 for _if in ${_tmplist} ; do 556 if dhcpif $_if; then 557 _dhcplist="${_dhcplist}${_aprefix}${_if}" 558 [ -z "$_aprefix" ] && _aprefix=' ' 559 elif [ -n "`_ifconfig_getargs $_if`" ]; then 560 _nodhcplist="${_nodhcplist}${_bprefix}${_if}" 561 [ -z "$_bprefix" ] && _bprefix=' ' 562 fi 563 done 564 565 case "$type" in 566 nodhcp) 567 echo $_nodhcplist 568 ;; 569 dhcp) 570 echo $_dhcplist 571 ;; 572 esac 573 return 0 574} 575 576hexdigit() 577{ 578 if [ $1 -lt 10 ]; then 579 echo $1 580 else 581 case $1 in 582 10) echo a ;; 583 11) echo b ;; 584 12) echo c ;; 585 13) echo d ;; 586 14) echo e ;; 587 15) echo f ;; 588 esac 589 fi 590} 591 592hexprint() 593{ 594 val=$1 595 str='' 596 597 dig=`hexdigit $((${val} & 15))` 598 str=${dig}${str} 599 val=$((${val} >> 4)) 600 while [ ${val} -gt 0 ]; do 601 dig=`hexdigit $((${val} & 15))` 602 str=${dig}${str} 603 val=$((${val} >> 4)) 604 done 605 606 echo ${str} 607} 608 609# Setup the interfaces for IPv6 610network6_interface_setup() 611{ 612 interfaces=$* 613 rtsol_interfaces='' 614 case ${ipv6_gateway_enable} in 615 [Yy][Ee][Ss]) 616 rtsol_available=no 617 ;; 618 *) 619 rtsol_available=yes 620 ;; 621 esac 622 for i in $interfaces; do 623 rtsol_interface=yes 624 prefix=`get_if_var $i ipv6_prefix_IF` 625 if [ -n "${prefix}" ]; then 626 rtsol_available=no 627 rtsol_interface=no 628 laddr=`network6_getladdr $i` 629 hostid=`expr "${laddr}" : 'fe80::\(.*\)%\(.*\)'` 630 for j in ${prefix}; do 631 address=$j\:${hostid} 632 ifconfig $i inet6 ${address} prefixlen 64 alias 633 634 case ${ipv6_gateway_enable} in 635 [Yy][Ee][Ss]) 636 # subnet-router anycast address 637 # (rfc2373) 638 ifconfig $i inet6 $j:: prefixlen 64 \ 639 alias anycast 640 ;; 641 esac 642 done 643 fi 644 ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF` 645 if [ -n "${ipv6_ifconfig}" ]; then 646 rtsol_available=no 647 rtsol_interface=no 648 ifconfig $i inet6 ${ipv6_ifconfig} alias 649 fi 650 651 if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ] 652 then 653 case ${i} in 654 lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*) 655 ;; 656 *) 657 rtsol_interfaces="${rtsol_interfaces} ${i}" 658 ;; 659 esac 660 else 661 ifconfig $i inet6 662 fi 663 done 664 665 if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then 666 # Act as endhost - automatically configured. 667 # You can configure only single interface, as 668 # specification assumes that autoconfigured host has 669 # single interface only. 670 sysctl net.inet6.ip6.accept_rtadv=1 671 set ${rtsol_interfaces} 672 ifconfig $1 up 673 rtsol ${rtsol_flags} $1 674 fi 675 676 for i in $interfaces; do 677 alias=0 678 while : ; do 679 ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF_alias${alias}` 680 if [ -z "${ipv6_ifconfig}" ]; then 681 break; 682 fi 683 ifconfig $i inet6 ${ipv6_ifconfig} alias 684 alias=$((${alias} + 1)) 685 done 686 done 687} 688 689# Setup IPv6 to IPv4 mapping 690network6_stf_setup() 691{ 692 case ${stf_interface_ipv4addr} in 693 [Nn][Oo] | '') 694 ;; 695 *) 696 # assign IPv6 addr and interface route for 6to4 interface 697 stf_prefixlen=$((16+${stf_interface_ipv4plen:-0})) 698 OIFS="$IFS" 699 IFS=".$IFS" 700 set ${stf_interface_ipv4addr} 701 IFS="$OIFS" 702 hexfrag1=`hexprint $(($1*256 + $2))` 703 hexfrag2=`hexprint $(($3*256 + $4))` 704 ipv4_in_hexformat="${hexfrag1}:${hexfrag2}" 705 case ${stf_interface_ipv6_ifid} in 706 [Aa][Uu][Tt][Oo] | '') 707 for i in ${ipv6_network_interfaces}; do 708 laddr=`network6_getladdr ${i}` 709 case ${laddr} in 710 '') 711 ;; 712 *) 713 break 714 ;; 715 esac 716 done 717 stf_interface_ipv6_ifid=`expr "${laddr}" : \ 718 'fe80::\(.*\)%\(.*\)'` 719 case ${stf_interface_ipv6_ifid} in 720 '') 721 stf_interface_ipv6_ifid=0:0:0:1 722 ;; 723 esac 724 ;; 725 esac 726 ifconfig stf0 create >/dev/null 2>&1 727 ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \ 728 prefixlen ${stf_prefixlen} 729 # disallow packets to malicious 6to4 prefix 730 route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject 731 route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject 732 route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject 733 route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject 734 ;; 735 esac 736} 737 738# Setup static routes 739network6_static_routes_setup() 740{ 741 # Set up any static routes. 742 case ${ipv6_defaultrouter} in 743 [Nn][Oo] | '') 744 ;; 745 *) 746 ipv6_static_routes="default ${ipv6_static_routes}" 747 ipv6_route_default="default ${ipv6_defaultrouter}" 748 ;; 749 esac 750 case ${ipv6_static_routes} in 751 [Nn][Oo] | '') 752 ;; 753 *) 754 for i in ${ipv6_static_routes}; do 755 ipv6_route_args=`get_if_var $i ipv6_route_IF` 756 route add -inet6 ${ipv6_route_args} 757 done 758 ;; 759 esac 760} 761 762# Setup faith 763network6_faith_setup() 764{ 765 case ${ipv6_faith_prefix} in 766 [Nn][Oo] | '') 767 ;; 768 *) 769 sysctl net.inet6.ip6.keepfaith=1 770 ifconfig faith0 create >/dev/null 2>&1 771 ifconfig faith0 up 772 for prefix in ${ipv6_faith_prefix}; do 773 prefixlen=`expr "${prefix}" : ".*/\(.*\)"` 774 case ${prefixlen} in 775 '') 776 prefixlen=96 777 ;; 778 *) 779 prefix=`expr "${prefix}" : \ 780 "\(.*\)/${prefixlen}"` 781 ;; 782 esac 783 route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1 784 route change -inet6 ${prefix} -prefixlen ${prefixlen} \ 785 -ifp faith0 786 done 787 ;; 788 esac 789} 790 791# Install the "default interface" to kernel, which will be used 792# as the default route when there's no router. 793network6_default_interface_setup() 794{ 795 # Choose IPv6 default interface if it is not clearly specified. 796 case ${ipv6_default_interface} in 797 '') 798 for i in ${ipv6_network_interfaces}; do 799 case $i in 800 lo0|faith[0-9]*) 801 continue 802 ;; 803 esac 804 laddr=`network6_getladdr $i exclude_tentative` 805 case ${laddr} in 806 '') 807 ;; 808 *) 809 ipv6_default_interface=$i 810 break 811 ;; 812 esac 813 done 814 ;; 815 esac 816 817 # Disallow unicast packets without outgoing scope identifiers, 818 # or route such packets to a "default" interface, if it is specified. 819 route add -inet6 fe80:: -prefixlen 10 ::1 -reject 820 case ${ipv6_default_interface} in 821 [Nn][Oo] | '') 822 route add -inet6 ff02:: -prefixlen 16 ::1 -reject 823 ;; 824 *) 825 laddr=`network6_getladdr ${ipv6_default_interface}` 826 route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \ 827 -cloning 828 829 # Disable installing the default interface with the 830 # case net.inet6.ip6.forwarding=0 and 831 # net.inet6.ip6.accept_rtadv=0, due to avoid conflict 832 # between the default router list and the manual 833 # configured default route. 834 case ${ipv6_gateway_enable} in 835 [Yy][Ee][Ss]) 836 ;; 837 *) 838 if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ] 839 then 840 ndp -I ${ipv6_default_interface} 841 fi 842 ;; 843 esac 844 ;; 845 esac 846} 847 848network6_getladdr() 849{ 850 ifconfig $1 2>/dev/null | while read proto addr rest; do 851 case ${proto} in 852 inet6) 853 case ${addr} in 854 fe80::*) 855 if [ -z "$2" ]; then 856 echo ${addr} 857 return 858 fi 859 case ${rest} in 860 *tentative*) 861 continue 862 ;; 863 *) 864 echo ${addr} 865 return 866 esac 867 esac 868 esac 869 done 870} 871