diff -rup busybox-1.01/.pc/udhcpscript.patch/examples/udhcp/simple.script busybox-1.01/examples/udhcp/simple.script
--- busybox-1.01/examples/udhcp/simple.script	1970-01-01 00:00:00.000000000 +0000
+++ busybox-1.01/examples/udhcp/simple.script	1970-01-01 00:00:00.000000000 +0000
@@ -1,40 +1,129 @@
 #!/bin/sh
+# slugos UDHCP client script
+#
+. /etc/default/functions
+
+echodns(){
+	local dns
+	if test $# -gt 0
+	then
+		for dns in "$@"
+		do
+			echo "nameserver $dns #dhcp:$interface"
+		done
+	fi
+}
 
-# udhcpc script edited by Tim Riker <Tim@Rikers.org>
+# Output the correct contents for resolv.conf based on
+# the current one and any new information
+mkresolv() {
+	local rmdomain
+	rmdomain=
+	# last search takes precedence, so a user
+	# specified search in resolv.conf is retained
+	test -n "$domain" && {
+		echo "search $domain #dhcp"
+		rmdomain='|search [^ ]* #dhcp'
+	}
+	# first nameserver takes precedence, use a user
+	# specified nameserver in preference then the
+	# new ones
+	egrep -v '^(nameserver [^ ]* #dhcp:.*'"$rmdomain"')$' "$1"
+	echodns $dns
+	egrep '^nameserver [^ ]* #dhcp:.*$' "$1" | egrep -v :"$interface"'$'
+}
+
+# checksum of a file (or stdin if -)
+md5strm() {
+	md5sum $1 2>/dev/null | sed -n 's/^\([0-9A-Za-z]*\).*$/\1/p'
+}
+
+# update resolv.conf for $interface using $domain and $dns
+updresolv() {
+	local md5old md5new resolv
+	md5old="$(md5strm /etc/resolv.conf)"
+	resolv="$(mkresolv /etc/resolv.conf)"
+	md5new="$(echo "$resolv" | md5strm -)"
+	test "$md5old" != "$md5new" && echo "$resolv" >/etc/resolv.conf
+}
+
+unroute() {
+	# called to deconfig the interface
+	while route del default gw 0.0.0.0 dev $interface 2>/dev/null
+	do
+		:
+	done
+}
+
+bind() {
+	local B N metric i olddomain resolv
+	B=
+	test -n "$broadcast" && B="broadcast $broadcast"
+	N=
+	test -n "$subnet" && N="netmask $subnet"
+	ifconfig "$interface" "$ip" $B $N up
+
+	# If given router information delete the old information and
+	# enter new stuff, routers get metrics incremented by 1
+	# between each (this is somewhat arbitrary)
+	if test -n "$router"
+	then
+		unroute
+		metric=0
+		for i in $router
+		do
+			route add default gw "$i" dev "$interface" metric $((metric++))
+		done
+	fi
 
-[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
+	olddomain=
+	test -r /etc/defaultdomain && olddomain="$(cat /etc/defaultdomain)"
+	if test -n "$domain" -a "$domain" != "$olddomain"
+	then
+		echo "$domain" >/etc/defaultdomain
+		# and update the kernel view too
+		echo "$domain" >/proc/sys/kernel/domainname
+	fi
 
-RESOLV_CONF="/etc/resolv.conf"
-[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
-[ -n "$subnet" ] && NETMASK="netmask $subnet"
+	updresolv
+}
 
 case "$1" in
-	deconfig)
-		/sbin/ifconfig $interface 0.0.0.0
-		;;
-
-	renew|bound)
-		/sbin/ifconfig $interface $ip $BROADCAST $NETMASK
-
-		if [ -n "$router" ] ; then
-			echo "deleting routers"
-			while route del default gw 0.0.0.0 dev $interface ; do
-				:
-			done
-
-			metric=0
-			for i in $router ; do
-				route add default gw $i dev $interface metric $((metric++))
-			done
+deconfig)
+	# Bring the interface up (without inet at this point)
+	# Remove the resolver information because deconfig is called
+	# on leasefail and we need to remove this interface at that
+	# point to ensure the machine remains visible on another
+	# interface!
+	domain=
+	dns=
+	unroute
+	updresolv
+	ifconfig "$interface" up;;
+
+renew|bound)
+	bind;;
+
+leasefail)
+	# Pull the values from the config data if (only only if) this
+	# is the config interface
+	if test "$interface" = "$(config iface)"
+	then
+		ip="$(config ip)"
+		if test -n "$ip"
+		then
+			router="$(config gateway)"
+			subnet="$(config netmask)"
+			broadcast="$(config broadcast)"
+			domain="$(config domain)"
+			dns="$(config dns)"
+
+			bind
 		fi
+	fi;;
 
-		echo -n > $RESOLV_CONF
-		[ -n "$domain" ] && echo search $domain >> $RESOLV_CONF
-		for i in $dns ; do
-			echo adding dns $i
-			echo nameserver $i >> $RESOLV_CONF
-		done
-		;;
+*)	echo "udhcpc: $*: unknown command" >&2
+	exit 1;;
 esac
 
 exit 0