diff -Naur iproute2-original/lib/ll_map.c iproute2-patched/lib/ll_map.c
--- iproute2-original/lib/ll_map.c	2008-08-05 19:15:56.000000000 +0000
+++ iproute2-patched/lib/ll_map.c	2008-08-05 22:22:36.000000000 +0000
@@ -23,6 +23,7 @@
 #include "ll_map.h"
 
 extern unsigned int if_nametoindex (const char *);
+static int ifacecache=0;
 
 struct idxmap
 {
@@ -160,6 +161,10 @@
 
 int ll_init_map(struct rtnl_handle *rth)
 {
+	if (ifacecache == 1)
+	    return 0;
+	ifacecache = 1;
+
 	if (rtnl_wilddump_request(rth, AF_UNSPEC, RTM_GETLINK) < 0) {
 		perror("Cannot send dump request");
 		exit(1);