--- a/ip/iproute.c	2005/05/05 18:56:30	1.1
+++ b/ip/iproute.c	2005/05/05 19:10:49
@@ -857,6 +857,11 @@
 		argc--; argv++;
 	}
 
+	if (!dst_ok) {
+		fprintf(stderr,"route must specify destination address \n");
+		return -1;
+	}
+
 	if (rtnl_open(&rth, 0) < 0)
 		exit(1);