Index: iproute2-2.6.29/ip/link_gre.c
===================================================================
--- iproute2-2.6.29.orig/ip/link_gre.c	2009-06-22 11:10:24.212963299 +0400
+++ iproute2-2.6.29/ip/link_gre.c	2009-06-22 11:10:33.940691491 +0400
@@ -12,6 +12,7 @@
 
 #include <string.h>
 #include <net/if.h>
+#include <linux/ip.h>
 #include <linux/if_tunnel.h>
 #include <sys/types.h>
 #include <sys/socket.h>