1 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h
index e774a084436..7567b875248 100644
--- a/src/vnet/buffer.h
+++ b/src/vnet/buffer.h
@@ -126,8 +126,14 @@ typedef struct
 	     protocol and ports. */
 	  u32 flow_hash;
 
-	  /* next protocol */
-	  u32 save_protocol;
+	  union
+	  {
+	    /* next protocol */
+	    u32 save_protocol;
+
+	    /* Hint for transport protocols */
+	    u32 fib_index;
+	  };
 
 	  /* Rewrite length */
 	  u32 save_rewrite_length;