diff --git a/src/vnet/vxlan/vxlan.h b/src/vnet/vxlan/vxlan.h
index 48c6146..129bb43 100644
--- a/src/vnet/vxlan/vxlan.h
+++ b/src/vnet/vxlan/vxlan.h
@@ -189,6 +189,12 @@
   /* Record used instances */
   uword *instance_used;
   u32 flow_id_start;
+
+  /* cache for last 8 vxlan tunnel */
+#ifdef CLIB_HAVE_VEC512
+  vtep4_cache_t vtep4_u512;
+#endif
+
 } vxlan_main_t;
 
 extern vxlan_main_t vxlan_main;