cleaner version of the udhcp script

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7222 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 7 insertions, 5 deletions

diff --git a/package/base-files/files/usr/share/udhcpc/default.script b/package/base-files/files/usr/share/udhcpc/default.script
index f2099204e3..76ba746e28 100755
--- a/package/base-files/files/usr/share/udhcpc/default.script
+++ b/package/base-files/files/usr/share/udhcpc/default.script
@@ -28,15 +28,17 @@ case "$1" in
 		netmask ${subnet:-255.255.255.0} \
 		broadcast ${broadcast:-+}
 
-		if [ "$router" != "$(route -n | grep '^0.0.0.0' | grep $interface | awk '{ print $2 }')" ] ; then
-			echo "deleting routers"
-			while route del default gw 0.0.0.0 dev $interface >&- 2>&- ; do :; done
-					
+		[ "$router"] && {
 			for i in $router ; do
 				echo "adding router $i"
 				route add default gw $i dev $interface
+				valid="$valid|$i"
+
 			done
-		fi
+
+			echo "deleting old routes"
+			$(route -n | awk '/^0.0.0.0\W{9}('$valid')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}')
+		}
 		
 		[ -n "$dns" ] && {
 			echo -n > $RESOLV_CONF