diff -Nur iproute2-3.4.0.orig/configure iproute2-3.4.0/configure
--- iproute2-3.4.0.orig/configure	2012-05-21 16:12:19.000000000 -0500
+++ iproute2-3.4.0/configure	2012-05-23 19:15:58.548350916 -0500
@@ -149,7 +149,7 @@
 check_ipt_lib_dir()
 {
 	IPT_LIB_DIR=""
-	for dir in /lib /usr/lib /usr/local/lib
+	for dir in /lib64 /usr/lib64 /usr/local/lib64
 	do
 		for file in $dir/{xtables,iptables}/lib*t_*so ; do
 			if [ -f $file ]; then