xref: /freebsd/sbin/dhclient/dhclient-script (revision d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf)
147c08596SBrooks Davis#!/bin/sh
247c08596SBrooks Davis#
347c08596SBrooks Davis# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $
447c08596SBrooks Davis#
547c08596SBrooks Davis# Copyright (c) 2003 Kenneth R Westerback <krw@openbsd.org>
647c08596SBrooks Davis#
747c08596SBrooks Davis# Permission to use, copy, modify, and distribute this software for any
847c08596SBrooks Davis# purpose with or without fee is hereby granted, provided that the above
947c08596SBrooks Davis# copyright notice and this permission notice appear in all copies.
1047c08596SBrooks Davis#
1147c08596SBrooks Davis# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
1247c08596SBrooks Davis# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1347c08596SBrooks Davis# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
1447c08596SBrooks Davis# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1547c08596SBrooks Davis# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1647c08596SBrooks Davis# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
1747c08596SBrooks Davis# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1847c08596SBrooks Davis#
1947c08596SBrooks Davis#
2047c08596SBrooks Davis
21b1f35e43SBrooks DavisARP=/usr/sbin/arp
228750adafSBrooks DavisHOSTNAME=/bin/hostname
2360932bc9SAndrew ThompsonIFCONFIG='/sbin/ifconfig -n'
248750adafSBrooks Davis
258750adafSBrooks DavisLOCALHOST=127.0.0.1
268750adafSBrooks Davis
278750adafSBrooks Davisif [ -x /usr/bin/logger ]; then
288750adafSBrooks Davis	LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
298750adafSBrooks Daviselse
308750adafSBrooks Davis	LOGGER=echo
318750adafSBrooks Davisfi
328750adafSBrooks Davis
3347c08596SBrooks Davis#
3447c08596SBrooks Davis# Helper functions that implement common actions.
3547c08596SBrooks Davis#
3647c08596SBrooks Davis
378750adafSBrooks Davischeck_hostname() {
388750adafSBrooks Davis	current_hostname=`$HOSTNAME`
398750adafSBrooks Davis	if [ -z "$current_hostname" ]; then
408750adafSBrooks Davis		$LOGGER "New Hostname ($interface): $new_host_name"
418750adafSBrooks Davis		$HOSTNAME $new_host_name
428750adafSBrooks Davis	elif [ "$current_hostname" = "$old_host_name" -a \
438750adafSBrooks Davis	       "$new_host_name" != "$old_host_name" ]; then
448750adafSBrooks Davis		$LOGGER "New Hostname ($interface): $new_host_name"
458750adafSBrooks Davis		$HOSTNAME $new_host_name
4647c08596SBrooks Davis	fi
4747c08596SBrooks Davis}
4847c08596SBrooks Davis
498750adafSBrooks Davisarp_flush() {
508750adafSBrooks Davis	arp -an -i $interface | \
518750adafSBrooks Davis		sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' | \
528750adafSBrooks Davis		sh >/dev/null 2>&1
538750adafSBrooks Davis}
548750adafSBrooks Davis
558750adafSBrooks Davisdelete_old_address() {
5660932bc9SAndrew Thompson	eval "$IFCONFIG $interface inet -alias $old_ip_address $medium"
578750adafSBrooks Davis}
588750adafSBrooks Davis
5947c08596SBrooks Davisadd_new_address() {
6060932bc9SAndrew Thompson	eval "$IFCONFIG $interface \
6147c08596SBrooks Davis		inet $new_ip_address \
6247c08596SBrooks Davis		netmask $new_subnet_mask \
6347c08596SBrooks Davis		broadcast $new_broadcast_address \
64001f040aSBrooks Davis		$medium"
6547c08596SBrooks Davis
668750adafSBrooks Davis	$LOGGER "New IP Address ($interface): $new_ip_address"
678750adafSBrooks Davis	$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
688750adafSBrooks Davis	$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
698750adafSBrooks Davis	$LOGGER "New Routers ($interface): $new_routers"
7047c08596SBrooks Davis}
7147c08596SBrooks Davis
7247c08596SBrooks Davisdelete_old_alias() {
7347c08596SBrooks Davis	if [ -n "$alias_ip_address" ]; then
7460932bc9SAndrew Thompson		$IFCONFIG $interface inet -alias $alias_ip_address > /dev/null 2>&1
757e82455eSBrooks Davis		#route delete $alias_ip_address $LOCALHOST > /dev/null 2>&1
7647c08596SBrooks Davis	fi
7747c08596SBrooks Davis}
7847c08596SBrooks Davis
7947c08596SBrooks Davisadd_new_alias() {
8047c08596SBrooks Davis	if [ -n "$alias_ip_address" ]; then
8160932bc9SAndrew Thompson		$IFCONFIG $interface inet alias $alias_ip_address netmask \
8247c08596SBrooks Davis		    $alias_subnet_mask
837e82455eSBrooks Davis		#route add $alias_ip_address $LOCALHOST
8447c08596SBrooks Davis	fi
8547c08596SBrooks Davis}
8647c08596SBrooks Davis
872fcc7370SEd Mastefill_classless_routes() {
882fcc7370SEd Maste	set $1
899f0d81baSEd Maste	while [ $# -ge 5 ]; do
902fcc7370SEd Maste		if [ $1 -eq 0 ]; then
912fcc7370SEd Maste			route="default"
922fcc7370SEd Maste		elif [ $1 -le 8 ]; then
932fcc7370SEd Maste			route="$2.0.0.0/$1"
942fcc7370SEd Maste			shift
952fcc7370SEd Maste		elif [ $1 -le 16 ]; then
962fcc7370SEd Maste			route="$2.$3.0.0/$1"
972fcc7370SEd Maste			shift; shift
982fcc7370SEd Maste		elif [ $1 -le 24 ]; then
992fcc7370SEd Maste			route="$2.$3.$4.0/$1"
1002fcc7370SEd Maste			shift; shift; shift
1012fcc7370SEd Maste		else
1022fcc7370SEd Maste			route="$2.$3.$4.$5/$1"
1032fcc7370SEd Maste			shift; shift; shift; shift
1042fcc7370SEd Maste		fi
1052fcc7370SEd Maste		shift
1062fcc7370SEd Maste		router="$1.$2.$3.$4"
1072fcc7370SEd Maste		classless_routes="$classless_routes $route $router"
1082fcc7370SEd Maste		shift; shift; shift; shift
1092fcc7370SEd Maste	done
1102fcc7370SEd Maste}
1112fcc7370SEd Maste
11247c08596SBrooks Davisdelete_old_routes() {
1137e82455eSBrooks Davis	#route delete "$old_ip_address" $LOCALHOST >/dev/null 2>&1
1142fcc7370SEd Maste	if [ -n "$old_classless_routes" ]; then
1152fcc7370SEd Maste		fill_classless_routes "$old_classless_routes"
1162fcc7370SEd Maste		set $classless_routes
1172fcc7370SEd Maste		while [ $# -gt 1 ]; do
1182fcc7370SEd Maste			route delete "$1" "$2"
1192fcc7370SEd Maste			shift; shift
1202fcc7370SEd Maste		done
1212fcc7370SEd Maste		return 0;
1222fcc7370SEd Maste	fi
1232fcc7370SEd Maste
124d5354256SBrooks Davis	# If we supported multiple default routes, we'd be removing each
125d5354256SBrooks Davis	# one here.  We don't so just delete the default route if it's
126d5354256SBrooks Davis	# through our interface.
127d5354256SBrooks Davis	if is_default_interface; then
128d5354256SBrooks Davis		route delete default >/dev/null 2>&1
1298750adafSBrooks Davis	fi
13047c08596SBrooks Davis
13147c08596SBrooks Davis	if [ -n "$old_static_routes" ]; then
13247c08596SBrooks Davis		set $old_static_routes
13347c08596SBrooks Davis		while [ $# -gt 1 ]; do
13447c08596SBrooks Davis			route delete "$1" "$2"
13547c08596SBrooks Davis			shift; shift
13647c08596SBrooks Davis		done
13747c08596SBrooks Davis	fi
13847c08596SBrooks Davis
1398750adafSBrooks Davis	arp_flush
14047c08596SBrooks Davis}
14147c08596SBrooks Davis
14247c08596SBrooks Davisadd_new_routes() {
1437e82455eSBrooks Davis	#route add $new_ip_address $LOCALHOST >/dev/null 2>&1
1442fcc7370SEd Maste
1452fcc7370SEd Maste	# RFC 3442: If the DHCP server returns both a Classless Static
1462fcc7370SEd Maste	# Routes option and a Router option, the DHCP client MUST ignore
1472fcc7370SEd Maste	# the Router option.
1482fcc7370SEd Maste	#
1492fcc7370SEd Maste	# DHCP clients that support this option (Classless Static Routes)
1502fcc7370SEd Maste	# MUST NOT install the routes specified in the Static Routes
1512fcc7370SEd Maste	# option (option code 33) if both a Static Routes option and the
1522fcc7370SEd Maste	# Classless Static Routes option are provided.
1532fcc7370SEd Maste
1542fcc7370SEd Maste	if [ -n "$new_classless_routes" ]; then
1552fcc7370SEd Maste		fill_classless_routes "$new_classless_routes"
1562fcc7370SEd Maste		$LOGGER "New Classless Static Routes ($interface): $classless_routes"
1572fcc7370SEd Maste		set $classless_routes
1582fcc7370SEd Maste		while [ $# -gt 1 ]; do
1592fcc7370SEd Maste			if [ "0.0.0.0" = "$2" ]; then
1602fcc7370SEd Maste				route add "$1" -iface "$interface"
1612fcc7370SEd Maste			else
1622fcc7370SEd Maste				route add "$1" "$2"
1632fcc7370SEd Maste			fi
1642fcc7370SEd Maste			shift; shift
1652fcc7370SEd Maste		done
1662fcc7370SEd Maste		return
1672fcc7370SEd Maste	fi
1682fcc7370SEd Maste
16947c08596SBrooks Davis	for router in $new_routers; do
170d5354256SBrooks Davis		if is_default_interface; then
171d5354256SBrooks Davis
17247c08596SBrooks Davis			if [ "$new_ip_address" = "$router" ]; then
17347c08596SBrooks Davis				route add default -iface $router >/dev/null 2>&1
17447c08596SBrooks Davis			else
175fd6ecc18SKristof Provost				if [ "$new_subnet_mask" = "255.255.255.255" ]; then
176fd6ecc18SKristof Provost					route add "$router" -iface "$interface" >/dev/null 2>&1
177fd6ecc18SKristof Provost				fi
178fd6ecc18SKristof Provost
17947c08596SBrooks Davis				route add default $router >/dev/null 2>&1
18047c08596SBrooks Davis			fi
181d5354256SBrooks Davis		fi
18247c08596SBrooks Davis		# 2nd and subsequent default routers error out, so explicitly
18347c08596SBrooks Davis		# stop processing the list after the first one.
18447c08596SBrooks Davis		break
18547c08596SBrooks Davis	done
18647c08596SBrooks Davis
18747c08596SBrooks Davis	if [ -n "$new_static_routes" ]; then
1888750adafSBrooks Davis		$LOGGER "New Static Routes ($interface): $new_static_routes"
18947c08596SBrooks Davis		set $new_static_routes
19047c08596SBrooks Davis		while [ $# -gt 1 ]; do
19147c08596SBrooks Davis			route add $1 $2
19247c08596SBrooks Davis			shift; shift
19347c08596SBrooks Davis		done
19447c08596SBrooks Davis	fi
19547c08596SBrooks Davis}
19647c08596SBrooks Davis
19747c08596SBrooks Davisadd_new_resolv_conf() {
19847c08596SBrooks Davis	# XXX Old code did not create/update resolv.conf unless both
19947c08596SBrooks Davis	# $new_domain_name and $new_domain_name_servers were provided.  PR
20047c08596SBrooks Davis	# #3135 reported some ISP's only provide $new_domain_name_servers and
20147c08596SBrooks Davis	# thus broke the script. This code creates the resolv.conf if either
20247c08596SBrooks Davis	# are provided.
20347c08596SBrooks Davis
204f1bacaa5SBrooks Davis	local tmpres=/var/run/resolv.conf.${interface}
20590158aeeSWes Peters	rm -f $tmpres
20647c08596SBrooks Davis
207409139f0SJean-Sébastien Pédron	if [ -n "$new_domain_search" ]; then
208409139f0SJean-Sébastien Pédron		echo "search $new_domain_search" >>$tmpres
209409139f0SJean-Sébastien Pédron	elif [ -n "$new_domain_name" ]; then
21090158aeeSWes Peters		echo "search $new_domain_name" >>$tmpres
21147c08596SBrooks Davis	fi
21247c08596SBrooks Davis
21347c08596SBrooks Davis	if [ -n "$new_domain_name_servers" ]; then
21447c08596SBrooks Davis		for nameserver in $new_domain_name_servers; do
21590158aeeSWes Peters			echo "nameserver $nameserver" >>$tmpres
21647c08596SBrooks Davis		done
21747c08596SBrooks Davis	fi
21847c08596SBrooks Davis
21990158aeeSWes Peters	if [ -f $tmpres ]; then
22047c08596SBrooks Davis		if [ -f /etc/resolv.conf.tail ]; then
22190158aeeSWes Peters			cat /etc/resolv.conf.tail >>$tmpres
22247c08596SBrooks Davis		fi
22347c08596SBrooks Davis
2249201145dSHajimu UMEMOTO		case $resolvconf_enable in
2259201145dSHajimu UMEMOTO		# "no", "false", "off", or "0"
2269201145dSHajimu UMEMOTO		[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
227dd415a50SBrooks Davis			# When resolv.conf is not changed actually, we don't
228dd415a50SBrooks Davis			# need to update it.
229dd415a50SBrooks Davis			# If /usr is not mounted yet, we cannot use cmp, then
230dd415a50SBrooks Davis			# the following test fails.  In such case, we simply
231dd415a50SBrooks Davis			# ignore an error and do update resolv.conf.
23290158aeeSWes Peters			if cmp -s $tmpres /etc/resolv.conf; then
23390158aeeSWes Peters				rm -f $tmpres
234dd415a50SBrooks Davis				return 0
235dd415a50SBrooks Davis			fi 2>/dev/null
236dd415a50SBrooks Davis
2379201145dSHajimu UMEMOTO			# In case (e.g. during OpenBSD installs)
2389201145dSHajimu UMEMOTO			# /etc/resolv.conf is a symbolic link, take
2399201145dSHajimu UMEMOTO			# care to preserve the link and write the new
2409201145dSHajimu UMEMOTO			# data in the correct location.
24147c08596SBrooks Davis
24247c08596SBrooks Davis			if [ -f /etc/resolv.conf ]; then
24347c08596SBrooks Davis				cat /etc/resolv.conf > /etc/resolv.conf.save
24447c08596SBrooks Davis			fi
24590158aeeSWes Peters			cat $tmpres > /etc/resolv.conf
24647c08596SBrooks Davis
24747c08596SBrooks Davis			# Try to ensure correct ownership and permissions.
24847c08596SBrooks Davis			chown -RL root:wheel /etc/resolv.conf
24947c08596SBrooks Davis			chmod -RL 644 /etc/resolv.conf
2509201145dSHajimu UMEMOTO			;;
2519201145dSHajimu UMEMOTO
2529201145dSHajimu UMEMOTO		*)
2539201145dSHajimu UMEMOTO			/sbin/resolvconf -a ${interface} < $tmpres
2549201145dSHajimu UMEMOTO			;;
2559201145dSHajimu UMEMOTO		esac
2569201145dSHajimu UMEMOTO
2579201145dSHajimu UMEMOTO		rm -f $tmpres
25847c08596SBrooks Davis
25947c08596SBrooks Davis		return 0
26047c08596SBrooks Davis	fi
26147c08596SBrooks Davis
26247c08596SBrooks Davis	return 1
26347c08596SBrooks Davis}
26447c08596SBrooks Davis
265d6790d5aSBrooks Davis# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
266d6790d5aSBrooks Davisexit_with_hooks() {
267d6790d5aSBrooks Davis	exit_status=$1
268d6790d5aSBrooks Davis	if [ -f /etc/dhclient-exit-hooks ]; then
269d6790d5aSBrooks Davis		. /etc/dhclient-exit-hooks
270d6790d5aSBrooks Davis	fi
271d6790d5aSBrooks Davis	# probably should do something with exit status of the local script
272d6790d5aSBrooks Davis	exit $exit_status
273d6790d5aSBrooks Davis}
274d6790d5aSBrooks Davis
275d5354256SBrooks Davis# Get the interface with the current ipv4 default route on it using only
276d5354256SBrooks Davis# commands that are available prior to /usr being mounted.
277d5354256SBrooks Davisis_default_interface()
278d5354256SBrooks Davis{
2799761cdd8SBrooks Davis	routeget="`route -n get -inet default`"
280d5354256SBrooks Davis	oldifs="$IFS"
281d5354256SBrooks Davis	IFS="
282d5354256SBrooks Davis"
283d5354256SBrooks Davis	defif=
284d5354256SBrooks Davis	for line in $routeget ; do
285d5354256SBrooks Davis		case $line in
286d5354256SBrooks Davis		*interface:*)
287d5354256SBrooks Davis			defif=${line##*: }
288d5354256SBrooks Davis			;;
289d5354256SBrooks Davis		esac
290d5354256SBrooks Davis	done
291d5354256SBrooks Davis	IFS=${oldifs}
292d5354256SBrooks Davis
293d5354256SBrooks Davis	if [ -z "$defif" -o "$defif" = "$interface" ]; then
294d5354256SBrooks Davis		return 0
295d5354256SBrooks Davis	else
296d5354256SBrooks Davis		return 1
297d5354256SBrooks Davis	fi
298d5354256SBrooks Davis}
299d5354256SBrooks Davis
30047c08596SBrooks Davis#
30147c08596SBrooks Davis# Start of active code.
30247c08596SBrooks Davis#
30347c08596SBrooks Davis
304d5fedb6eSBrooks Davis# Invoke the local dhcp client enter hooks, if they exist.
305d5fedb6eSBrooks Davisif [ -f /etc/dhclient-enter-hooks ]; then
306d5fedb6eSBrooks Davis	exit_status=0
307d5fedb6eSBrooks Davis	. /etc/dhclient-enter-hooks
308d5fedb6eSBrooks Davis	# allow the local script to abort processing of this state
309d5fedb6eSBrooks Davis	# local script must set exit_status variable to nonzero.
310d5fedb6eSBrooks Davis	if [ $exit_status -ne 0 ]; then
311d5fedb6eSBrooks Davis		exit $exit_status
312d5fedb6eSBrooks Davis	fi
313d5fedb6eSBrooks Davisfi
314d5fedb6eSBrooks Davis
3159201145dSHajimu UMEMOTO: ${resolvconf_enable="YES"}
3169201145dSHajimu UMEMOTO
31747c08596SBrooks Daviscase $reason in
31847c08596SBrooks DavisMEDIUM)
31960932bc9SAndrew Thompson	eval "$IFCONFIG $interface $medium"
32047c08596SBrooks Davis	sleep 1
32147c08596SBrooks Davis	;;
32247c08596SBrooks Davis
32347c08596SBrooks DavisPREINIT)
32447c08596SBrooks Davis	delete_old_alias
325*e2dc8d78SAlexander V. Chernikov	eval "$IFCONFIG $interface up"
32647c08596SBrooks Davis	;;
32747c08596SBrooks Davis
32847c08596SBrooks DavisARPCHECK|ARPSEND)
32947c08596SBrooks Davis	;;
33047c08596SBrooks Davis
33147c08596SBrooks DavisBOUND|RENEW|REBIND|REBOOT)
3328750adafSBrooks Davis	check_hostname
33347c08596SBrooks Davis	if [ -n "$old_ip_address" ]; then
33447c08596SBrooks Davis		if [ "$old_ip_address" != "$alias_ip_address" ]; then
33547c08596SBrooks Davis			delete_old_alias
33647c08596SBrooks Davis		fi
33747c08596SBrooks Davis		if [ "$old_ip_address" != "$new_ip_address" ]; then
33847c08596SBrooks Davis			delete_old_address
33947c08596SBrooks Davis			delete_old_routes
34047c08596SBrooks Davis		fi
34147c08596SBrooks Davis	fi
34247c08596SBrooks Davis	if [ "$reason" = BOUND ] || \
34347c08596SBrooks Davis	   [ "$reason" = REBOOT ] || \
34447c08596SBrooks Davis	   [ -z "$old_ip_address" ] || \
34547c08596SBrooks Davis	   [ "$old_ip_address" != "$new_ip_address" ]; then
34647c08596SBrooks Davis		add_new_address
34747c08596SBrooks Davis		add_new_routes
34847c08596SBrooks Davis	fi
34947c08596SBrooks Davis	if [ "$new_ip_address" != "$alias_ip_address" ]; then
35047c08596SBrooks Davis		add_new_alias
35147c08596SBrooks Davis	fi
352d5354256SBrooks Davis	if is_default_interface; then
35347c08596SBrooks Davis		add_new_resolv_conf
354d5354256SBrooks Davis	fi
35547c08596SBrooks Davis	;;
35647c08596SBrooks Davis
35747c08596SBrooks DavisEXPIRE|FAIL)
35847c08596SBrooks Davis	delete_old_alias
35947c08596SBrooks Davis	if [ -n "$old_ip_address" ]; then
36047c08596SBrooks Davis		delete_old_address
36147c08596SBrooks Davis		delete_old_routes
36247c08596SBrooks Davis	fi
363b1f35e43SBrooks Davis	if [ -x $ARP ]; then
364b1f35e43SBrooks Davis		$ARP -d -a -i $interface
365b1f35e43SBrooks Davis	fi
36647c08596SBrooks Davis	# XXX Why add alias we just deleted above?
36747c08596SBrooks Davis	add_new_alias
368d5354256SBrooks Davis	if is_default_interface; then
3699201145dSHajimu UMEMOTO		case $resolvconf_enable in
3709201145dSHajimu UMEMOTO		# "no", "false", "off", or "0"
3719201145dSHajimu UMEMOTO		[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
37247c08596SBrooks Davis			if [ -f /etc/resolv.conf.save ]; then
37347c08596SBrooks Davis				cat /etc/resolv.conf.save > /etc/resolv.conf
37447c08596SBrooks Davis			fi
3759201145dSHajimu UMEMOTO			;;
3769201145dSHajimu UMEMOTO		*)
3779201145dSHajimu UMEMOTO			/sbin/resolvconf -d ${interface}
3789201145dSHajimu UMEMOTO			;;
3799201145dSHajimu UMEMOTO		esac
380d5354256SBrooks Davis	fi
38147c08596SBrooks Davis	;;
38247c08596SBrooks Davis
38347c08596SBrooks DavisTIMEOUT)
38447c08596SBrooks Davis	delete_old_alias
38547c08596SBrooks Davis	add_new_address
38647c08596SBrooks Davis	sleep 1
38747c08596SBrooks Davis	if [ -n "$new_routers" ]; then
3888750adafSBrooks Davis		$LOGGER "New Routers ($interface): $new_routers"
38947c08596SBrooks Davis		set "$new_routers"
390b0864f3aSBrooks Davis		if ping -q -c 1 -t 1 "$1"; then
39147c08596SBrooks Davis			if [ "$new_ip_address" != "$alias_ip_address" ]; then
39247c08596SBrooks Davis				add_new_alias
39347c08596SBrooks Davis			fi
39447c08596SBrooks Davis			add_new_routes
395d5354256SBrooks Davis			if ! is_default_interface; then
396d5354256SBrooks Davis				exit_with_hooks 0
397d5354256SBrooks Davis			fi
39847c08596SBrooks Davis			if add_new_resolv_conf; then
399d6790d5aSBrooks Davis				exit_with_hooks 0
40047c08596SBrooks Davis			fi
40147c08596SBrooks Davis		fi
40247c08596SBrooks Davis	fi
40360932bc9SAndrew Thompson	eval "$IFCONFIG $interface inet -alias $new_ip_address $medium"
40447c08596SBrooks Davis	delete_old_routes
405d6790d5aSBrooks Davis	exit_with_hooks 1
40647c08596SBrooks Davis	;;
40747c08596SBrooks Davisesac
40847c08596SBrooks Davis
409d6790d5aSBrooks Davisexit_with_hooks 0
410