--- functions-ipv4.old	2009-06-13 00:48:15 +0400
+++ functions-ipv4	2009-10-18 00:27:57 +0400
@@ -157,7 +157,10 @@
 		while read FIRST REST; do
 			# If 'dev' is not specified, add current dev.
 			SUFFIX=''
-			echo "$FIRST $REST" | egrep -q '[[:space:]]dev[[:space:]]' || SUFFIX="dev $NAME"
+			if ! echo " $FIRST $REST" | 
+			     egrep -q '[[:space:]](throw|unreachable|prohibit|blackhole)[[:space:]]'; then
+				echo "$FIRST $REST" | egrep -q '[[:space:]]dev[[:space:]]' || SUFFIX="dev $NAME"
+			fi
 			# If operation is not specified, use 'append'.
 			case "$FIRST" in
 				add|change|append|replace)