2 # Copyright (c) 2003 The FreeBSD Project. All rights reserved.
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions
7 # 1. Redistributions of source code must retain the above copyright
8 # notice, this list of conditions and the following disclaimer.
9 # 2. Redistributions in binary form must reproduce the above copyright
10 # notice, this list of conditions and the following disclaimer in the
11 # documentation and/or other materials provided with the distribution.
13 # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
14 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 # 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
29 # Subroutines commonly used from network startup scripts.
30 # Requires that rc.conf be loaded first.
34 # Bring up and configure an interface. If some configuration is
35 # applied, print the interface configuration.
43 [ -z "$ifn" ] && err 1 "ifn_start called without an interface"
45 ifscript_up ${ifn} && cfg=0
46 ifconfig_up ${ifn} && cfg=0
47 afexists inet && ipv4_up ${ifn} && cfg=0
48 afexists inet6 && ipv6_up ${ifn} && cfg=0
49 afexists ipx && ipx_up ${ifn} && cfg=0
50 childif_create ${ifn} && cfg=0
56 # Shutdown and de-configure an interface. If action is taken,
57 # print the interface name.
65 [ -z "$ifn" ] && err 1 "ifn_stop called without an interface"
67 afexists ipx && ipx_down ${ifn} && cfg=0
68 afexists inet6 && ipv6_down ${ifn} && cfg=0
69 afexists inet && ipv4_down ${ifn} && cfg=0
70 ifconfig_down ${ifn} && cfg=0
71 ifscript_down ${ifn} && cfg=0
72 childif_destroy ${ifn} && cfg=0
78 # Evaluate ifconfig(8) arguments for interface $if and
79 # run ifconfig(8) with those arguments. It returns 0 if
80 # arguments were found and executed or 1 if the interface
81 # had no arguments. Pseudo arguments DHCP and WPA are handled
86 local _cfg _ipv6_opts ifconfig_args
89 # Make sure lo0 always comes up.
90 if [ "$1" = "lo0" ]; then
95 ifconfig_args=`ifconfig_getargs $1`
96 if [ -n "${ifconfig_args}" ]; then
97 eval ifconfig $1 ${ifconfig_args}
102 if afexists inet6; then
103 if checkyesno ipv6_activate_all_interfaces; then
104 _ipv6_opts="-ifdisabled"
105 elif [ "$1" != "lo0" ]; then
106 _ipv6_opts="ifdisabled"
109 # backward compatibility: $ipv6_enable
111 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
112 if ! checkyesno ipv6_gateway_enable; then
113 _ipv6_opts="${_ipv6_opts} accept_rtadv"
118 case $ipv6_cpe_wanif in
120 _ipv6_opts="${_ipv6_opts} -no_radr accept_rtadv"
124 if [ -n "${_ipv6_opts}" ]; then
125 ifconfig $1 inet6 ${_ipv6_opts}
129 ifconfig_args=`ifconfig_getargs $1 ipv6`
130 if [ -n "${ifconfig_args}" ]; then
131 # backward compatibility: inet6 keyword
132 case "${ifconfig_args}" in
134 warn "\$ifconfig_$1_ipv6 needs " \
135 "\"inet6\" keyword for an IPv6 address."
136 ifconfig_args="inet6 ${ifconfig_args}"
139 ifconfig $1 inet6 -ifdisabled
140 eval ifconfig $1 ${ifconfig_args}
144 # backward compatiblity: $ipv6_ifconfig_IF
145 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF`
146 if [ -n "${ifconfig_args}" ]; then
147 warn "\$ipv6_ifconfig_$1 is obsolete." \
148 " Use ifconfig_$1_ipv6 instead."
149 ifconfig $1 inet6 -ifdisabled
150 eval ifconfig $1 inet6 ${ifconfig_args}
155 if [ ${_cfg} -eq 0 ]; then
160 /etc/rc.d/wpa_supplicant start $1
161 _cfg=0 # XXX: not sure this should count
165 if [ $_cfg -ne 0 ] ; then
168 if syncdhcpif $1; then
169 /etc/rc.d/dhclient start $1
178 # returns 1 if wpa_supplicant or dhclient was stopped or
179 # the interface exists.
187 /etc/rc.d/wpa_supplicant stop $1
192 /etc/rc.d/dhclient stop $1
204 # get_if_var if var [default]
205 # Return the value of the pseudo-hash corresponding to $if where
206 # $var is a string containg the sub-string "IF" which will be
207 # replaced with $if after the characters defined in _punct are
208 # replaced with '_'. If the variable is unset, replace it with
212 local _if _punct _punct_c _var _default prefix suffix
214 if [ $# -ne 2 -a $# -ne 3 ]; then
215 err 3 'USAGE: get_if_var name var [default]'
220 for _punct_c in $_punct; do
221 _if=`ltr ${_if} ${_punct_c} '_'`
228 eval echo \${${prefix}${_if}${suffix}-${_default}}
231 # _ifconfig_getargs if [af]
232 # Prints the arguments for the supplied interface to stdout.
233 # Returns 1 if empty. In general, ifconfig_getargs should be used
241 if [ -z "$_ifn" ]; then
245 get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT"
248 # ifconfig_getargs if [af]
249 # Takes the result from _ifconfig_getargs and removes pseudo
250 # args such as DHCP and WPA.
253 local _tmpargs _arg _args
254 _tmpargs=`_ifconfig_getargs $1 $2`
255 if [ $? -eq 1 ]; then
260 for _arg in $_tmpargs; do
263 [Nn][Oo][Aa][Uu][Tt][Oo]) ;;
264 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
265 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
277 # Returns 0 if the interface should be automatically configured at
278 # boot time and 1 otherwise.
282 _tmpargs=`_ifconfig_getargs $1`
284 for _arg in $_tmpargs; do
286 [Nn][Oo][Aa][Uu][Tt][Oo])
296 # Returns 0 if the interface is a DHCP interface and 1 otherwise.
300 _tmpargs=`_ifconfig_getargs $1`
306 for _arg in $_tmpargs; do
311 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
314 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
324 # Returns 0 if the interface should be configured synchronously and
329 _tmpargs=`_ifconfig_getargs $1`
335 for _arg in $_tmpargs; do
337 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
340 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
346 checkyesno synchronous_dhclient
350 # Returns 0 if the interface is a WPA interface and 1 otherwise.
354 _tmpargs=`_ifconfig_getargs $1`
356 for _arg in $_tmpargs; do
368 # Returns 0 if the address family is enabled in the kernel
377 check_kern_features ${_af}
380 ${SYSCTL_N} net.ipx > /dev/null 2>&1
383 if [ -x /sbin/atmconfig ]; then
384 /sbin/atmconfig diag list > /dev/null 2>&1
390 err 1 "afexists(): Unsupported address family: $_af"
396 # Returns 0 if the interface has no af configuration and 1 otherwise.
423 # Returns 0 if the interface should be configured for IPv6 and
430 if ! afexists inet6; then
434 # lo0 is always IPv6-enabled
441 case "${ipv6_network_interfaces}" in
442 $_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo])
443 # True if $ifconfig_IF_ipv6 is defined.
444 _tmpargs=`_ifconfig_getargs $_if ipv6`
445 if [ -n "${_tmpargs}" ]; then
449 # backward compatibility: True if $ipv6_ifconfig_IF is defined.
450 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
451 if [ -n "${_tmpargs}" ]; then
461 # Returns 0 if the interface should be configured for IPv6 with
462 # Stateless Address Configuration; 1 otherwise.
465 local _if _tmpargs _arg
480 if ! ipv6if $_if; then
483 if checkyesno ipv6_gateway_enable; then
486 _tmpargs=`get_if_var $_if ipv6_prefix_IF`
487 if [ -n "${_tmpargs}" ]; then
490 # backward compatibility: $ipv6_enable
492 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
493 if checkyesno ipv6_gateway_enable; then
501 _tmpargs=`_ifconfig_getargs $_if ipv6`
502 for _arg in $_tmpargs; do
510 # backward compatibility: $ipv6_ifconfig_IF
511 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
512 for _arg in $_tmpargs; do
524 # Returns 0 if the interface exists and 1 otherwise.
527 [ -z "$1" ] && return 1
528 ifconfig -n $1 > /dev/null 2>&1
532 # add IPv4 addresses to the interface $if
539 # Add 127.0.0.1/8 to lo0 unless otherwise specified.
540 if [ "${_if}" = "lo0" ]; then
541 ifconfig_args=`get_if_var ${_if} ifconfig_IF`
542 if [ -z "${ifconfig_args}" ]; then
543 ifconfig ${_if} inet 127.0.0.1/8 alias
546 ifalias_up ${_if} inet && _ret=0
547 ipv4_addrs_common ${_if} alias && _ret=0
553 # add IPv6 addresses to the interface $if
560 if ! ipv6if $_if; then
564 ifalias_up ${_if} inet6 && _ret=0
565 ipv6_prefix_hostid_addr_common ${_if} alias && _ret=0
566 ipv6_accept_rtadv_up ${_if} && _ret=0
569 sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
576 # remove IPv4 addresses from the interface $if
579 local _if _ifs _ret inetList oldifs _inet
584 inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
588 for _inet in $inetList ; do
589 # get rid of extraneous line
590 [ -z "$_inet" ] && break
592 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
595 ifconfig ${_if} ${_inet} delete
601 ifalias_down ${_if} inet && _ret=0
602 ipv4_addrs_common ${_if} -alias && _ret=0
608 # remove IPv6 addresses from the interface $if
611 local _if _ifs _ret inetList oldifs _inet6
616 if ! ipv6if $_if; then
620 ipv6_accept_rtadv_down ${_if} && _ret=0
621 ipv6_prefix_hostid_addr_common ${_if} -alias && _ret=0
622 ifalias_down ${_if} inet6 && _ret=0
624 inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`"
628 for _inet6 in $inetList ; do
629 # get rid of extraneous line
630 [ -z "$_inet6" ] && break
632 _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'`
635 ifconfig ${_if} ${_inet6} -alias
644 # ipv4_addrs_common if action
645 # Evaluate the ifconfig_if_ipv4 arguments for interface $if and
646 # use $action to add or remove IPv4 addresses from $if.
649 local _ret _if _action _cidr _cidr_addr
650 local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount
656 cidr_addr=`get_if_var $_if ipv4_addrs_IF`
658 for _cidr in ${cidr_addr}; do
660 _netmask="/"${_cidr##*/}
661 _range=${_ipaddr##*.}
666 # clear netmask when removing aliases
667 if [ "${_action}" = "-alias" ]; then
672 while [ "${_ipcount}" -le "${_iphigh}" ]; do
673 eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}"
674 _ipcount=$((${_ipcount}+1))
677 # only the first ipaddr in a subnet need the real netmask
678 if [ "${_action}" != "-alias" ]; then
688 # Configure aliases for network interface $if.
689 # It returns 0 if at least one alias was configured or
690 # 1 if there were none.
699 _ret=`ifalias_ipv4_up "$1"`
702 _ret=`ifalias_ipv6_up "$1"`
710 # Helper function for ifalias_up(). Handles IPv4.
714 local _ret alias ifconfig_args
717 # ifconfig_IF_aliasN which starts with "inet"
720 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
721 case "${ifconfig_args}" in
723 ifconfig $1 ${ifconfig_args} alias && _ret=0
731 warn "\$ifconfig_$1_alias${alias} needs " \
732 "\"inet\" keyword for an IPv4 address."
733 ifconfig $1 ${ifconfig_args} alias && _ret=0
736 alias=$((${alias} + 1))
743 # Helper function for ifalias_up(). Handles IPv6.
747 local _ret alias ifconfig_args
750 # ifconfig_IF_aliasN which starts with "inet6"
753 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
754 case "${ifconfig_args}" in
756 ifconfig $1 ${ifconfig_args} alias && _ret=0
762 alias=$((${alias} + 1))
765 # backward compatibility: ipv6_ifconfig_IF_aliasN.
768 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
769 case "${ifconfig_args}" in
774 ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0
775 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
776 " Use ifconfig_$1_aliasN instead."
779 alias=$((${alias} + 1))
786 # Remove aliases for network interface $if.
787 # It returns 0 if at least one alias was removed or
788 # 1 if there were none.
797 _ret=`ifalias_ipv4_down "$1"`
800 _ret=`ifalias_ipv6_down "$1"`
807 # ifalias_ipv4_down if
808 # Helper function for ifalias_down(). Handles IPv4.
812 local _ret alias ifconfig_args
815 # ifconfig_IF_aliasN which starts with "inet"
818 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
819 case "${ifconfig_args}" in
821 ifconfig $1 ${ifconfig_args} -alias && _ret=0
827 alias=$((${alias} + 1))
833 # ifalias_ipv6_down if
834 # Helper function for ifalias_down(). Handles IPv6.
838 local _ret alias ifconfig_args
841 # ifconfig_IF_aliasN which starts with "inet6"
844 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
845 case "${ifconfig_args}" in
847 ifconfig $1 ${ifconfig_args} -alias && _ret=0
853 alias=$((${alias} + 1))
856 # backward compatibility: ipv6_ifconfig_IF_aliasN.
859 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
860 case "${ifconfig_args}" in
865 ifconfig $1 inet6 ${ifconfig_args} -alias && _ret=0
866 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
867 " Use ifconfig_$1_aliasN instead."
870 alias=$((${alias} + 1))
876 # ipv6_prefix_hostid_addr_common if action
877 # Add or remove IPv6 prefix + hostid addr on the interface $if
879 ipv6_prefix_hostid_addr_common()
881 local _if _action prefix laddr hostid j address
884 prefix=`get_if_var ${_if} ipv6_prefix_IF`
886 if [ -n "${prefix}" ]; then
887 laddr=`network6_getladdr ${_if}`
888 hostid=${laddr#fe80::}
891 for j in ${prefix}; do
892 address=$j\:${hostid}
893 ifconfig ${_if} inet6 ${address} prefixlen 64 ${_action}
895 # if I am a router, add subnet router
896 # anycast address (RFC 2373).
897 if checkyesno ipv6_gateway_enable; then
898 ifconfig ${_if} inet6 $j:: prefixlen 64 \
905 # ipv6_accept_rtadv_up if
906 # Enable accepting Router Advertisement and send Router
907 # Solicitation message
908 ipv6_accept_rtadv_up()
910 if ipv6_autoconfif $1; then
911 ifconfig $1 inet6 accept_rtadv up
912 if ! checkyesno rtsold_enable; then
913 rtsol ${rtsol_flags} $1
918 # ipv6_accept_rtadv_down if
919 # Disable accepting Router Advertisement
920 ipv6_accept_rtadv_down()
922 if ipv6_autoconfif $1; then
923 ifconfig $1 inet6 -accept_rtadv
928 # Evaluate a startup script for the $if interface.
929 # It returns 0 if a script was found and processed or
930 # 1 if no script was found.
934 if [ -r /etc/start_if.$1 ]; then
943 # Evaluate a shutdown script for the $if interface.
944 # It returns 0 if a script was found and processed or
945 # 1 if no script was found.
949 if [ -r /etc/stop_if.$1 ]; then
958 # Create cloneable interfaces.
962 local _prefix _list ifn
967 for ifn in ${cloned_interfaces}; do
968 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF`
969 if [ $? -eq 0 ]; then
970 _list="${_list}${_prefix}${ifn}"
971 [ -z "$_prefix" ] && _prefix=' '
974 debug "Cloned: ${_list}"
978 # Destroy cloned interfaces. Destroyed interfaces are echoed to
983 local _prefix _list ifn
987 for ifn in ${cloned_interfaces}; do
988 ifconfig -n ${ifn} destroy
989 if [ $? -eq 0 ]; then
990 _list="${_list}${_prefix}${ifn}"
991 [ -z "$_prefix" ] && _prefix=' '
994 debug "Destroyed clones: ${_list}"
998 # Create and configure child interfaces. Return 0 if child
999 # interfaces are created.
1003 local cfg child child_vlans child_wlans create_args debug_flags ifn i
1007 # Create wireless interfaces
1008 child_wlans=`get_if_var $ifn wlans_IF`
1010 for child in ${child_wlans}; do
1011 create_args="wlandev $ifn `get_if_var $child create_args_IF`"
1012 debug_flags="`get_if_var $child wlandebug_IF`"
1014 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
1015 ifconfig $child create ${create_args} && cfg=0
1016 if [ -n "${debug_flags}" ]; then
1017 wlandebug -i $child ${debug_flags}
1020 i=`ifconfig wlan create ${create_args}`
1021 if [ -n "${debug_flags}" ]; then
1022 wlandebug -i $i ${debug_flags}
1024 ifconfig $i name $child && cfg=0
1026 if autoif $child; then
1031 # Create vlan interfaces
1032 child_vlans=`get_if_var $ifn vlans_IF`
1034 if [ -n "${child_vlans}" ]; then
1038 for child in ${child_vlans}; do
1039 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
1040 child="${ifn}.${child}"
1041 create_args=`get_if_var $child create_args_IF`
1042 ifconfig $child create ${create_args} && cfg=0
1044 create_args="vlandev $ifn `get_if_var $child create_args_IF`"
1045 if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then
1046 ifconfig $child create ${create_args} && cfg=0
1048 i=`ifconfig vlan create ${create_args}`
1049 ifconfig $i name $child && cfg=0
1052 if autoif $child; then
1061 # Destroy child interfaces.
1065 local cfg child child_vlans child_wlans ifn
1068 child_wlans=`get_if_var $ifn wlans_IF`
1069 for child in ${child_wlans}; do
1070 if ! ifexists $child; then
1073 ifconfig -n $child destroy && cfg=0
1076 child_vlans=`get_if_var $ifn vlans_IF`
1077 for child in ${child_vlans}; do
1078 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
1079 child="${ifn}.${child}"
1081 if ! ifexists $child; then
1084 ifconfig -n $child destroy && cfg=0
1091 # Create netgraph nodes.
1095 ngctl -f - 2> /dev/null <<EOF
1102 # Create netgraph nodes.
1108 ng_mkpeer $* | while read line; do
1109 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'`
1110 if [ -n "${t}" ]; then
1118 # Create gif(4) tunnel interfaces.
1123 for i in ${gif_interfaces}; do
1124 peers=`get_if_var $i gifconfig_IF`
1130 if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
1131 ifconfig $i create >/dev/null 2>&1
1133 gif=`ifconfig gif create`
1134 ifconfig $gif name $i
1136 ifconfig $i tunnel ${peers}
1144 # Configure Fast EtherChannel for interface $ifn. Returns 0 if
1145 # FEC arguments were found and configured; returns !0 otherwise.
1148 local req_iface iface bogus
1151 ngctl shutdown ${req_iface}: > /dev/null 2>&1
1155 iface=`ng_create_one fec dummy fec`
1156 if [ -z "${iface}" ]; then
1159 if [ "${iface}" = "${req_iface}" ]; then
1162 bogus="${bogus} ${iface}"
1165 for iface in ${bogus}; do
1166 ngctl shutdown ${iface}:
1171 # Create Fast EtherChannel interfaces.
1176 for i in ${fec_interfaces}; do
1178 for j in `get_if_var $i fecconfig_IF`; do
1184 ngctl msg ${i}: add_iface "\"${j}\""
1192 # Configure any IPX addresses for interface $ifn. Returns 0 if
1193 # IPX arguments were found and configured; returns 1 otherwise.
1201 ifconfig_args=`_ifconfig_getargs $ifn ipx`
1202 if [ -n "${ifconfig_args}" ]; then
1203 ifconfig ${ifn} ${ifconfig_args}
1211 # Remove IPX addresses for interface $ifn. Returns 0 if IPX
1212 # addresses were found and unconfigured. It returns 1, otherwise.
1216 local _if _ifs _ret ipxList oldifs _ipx
1220 ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`"
1224 for _ipx in $ipxList ; do
1225 # get rid of extraneous line
1226 [ -z "$_ipx" ] && break
1228 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
1231 ifconfig ${_if} ${_ipx} delete
1241 # Rename all requested interfaces.
1248 for _if in `ifconfig -l`; do
1249 _ifname=`get_if_var $_if ifconfig_IF_name`
1250 if [ ! -z "$_ifname" ]; then
1251 ifconfig $_if name $_ifname
1258 # list_net_interfaces type
1259 # List all network interfaces. The type of interface returned
1260 # can be controlled by the type argument. The type
1261 # argument can be any of the following:
1262 # nodhcp - all interfaces, excluding DHCP configured interfaces
1263 # dhcp - list only DHCP configured interfaces
1264 # noautoconf - all interfaces, excluding IPv6 Stateless
1265 # Address Autoconf configured interfaces
1266 # autoconf - list only IPv6 Stateless Address Autoconf
1267 # configured interfaces
1268 # If no argument is specified all network interfaces are output.
1269 # Note that the list will include cloned interfaces if applicable.
1270 # Cloned interfaces must already exist to have a chance to appear
1271 # in the list if ${network_interfaces} is set to `auto'.
1273 list_net_interfaces()
1275 local type _tmplist _list _autolist _lo _if
1278 # Get a list of ALL the interfaces and make lo0 first if it's there.
1281 case ${network_interfaces} in
1283 _autolist="`ifconfig -l`"
1285 for _if in ${_autolist} ; do
1286 if autoif $_if; then
1287 if [ "$_if" = "lo0" ]; then
1290 _tmplist="${_tmplist} ${_if}"
1294 _tmplist="${_lo}${_tmplist# }"
1297 _tmplist="${network_interfaces} ${cloned_interfaces}"
1299 # lo0 is effectively mandatory, so help prevent foot-shooting
1302 lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing
1303 *) _tmplist="lo0 ${_tmplist}" ;;
1311 for _if in ${_tmplist} ; do
1312 if ! dhcpif $_if && \
1313 [ -n "`_ifconfig_getargs $_if`" ]; then
1314 _list="${_list# } ${_if}"
1319 for _if in ${_tmplist} ; do
1320 if dhcpif $_if; then
1321 _list="${_list# } ${_if}"
1326 for _if in ${_tmplist} ; do
1327 if ! ipv6_autoconfif $_if && \
1328 [ -n "`_ifconfig_getargs $_if ipv6`" ]; then
1329 _list="${_list# } ${_if}"
1334 for _if in ${_tmplist} ; do
1335 if ipv6_autoconfif $_if; then
1336 _list="${_list# } ${_if}"
1350 # get_default_if -address_family
1351 # Get the interface of the default route for the given address family.
1352 # The -address_family argument must be suitable passing to route(8).
1356 local routeget oldifs defif line
1361 for line in `route -n get $1 default 2>/dev/null`; do
1374 # Echo decimal number $arg (single digit) in hexadecimal format.
1381 # Echo decimal number $arg (multiple digits) in hexadecimal format.
1387 is_wired_interface()
1391 case `ifconfig $1 2>/dev/null` in
1392 *media:?Ethernet*) media=Ethernet ;;
1395 test "$media" = "Ethernet"
1398 # network6_getladdr if [flag]
1399 # Echo link-local address from $if if any.
1400 # If flag is defined, tentative ones will be excluded.
1403 local proto addr rest
1404 ifconfig $1 2>/dev/null | while read proto addr rest; do
1409 if [ -z "$2" ]; then