diff --git a/p4src/checksum_diff.p4 b/p4src/checksum_diff.p4
index 5d5b3c9..7c02a5f 100644
--- a/p4src/checksum_diff.p4
+++ b/p4src/checksum_diff.p4
@@ -144,6 +144,13 @@ control MyIngress(inout headers hdr,
         standard_metadata.egress_spec = out_port;
 	}
 
+    action controller_reply(task_t task) {
+        meta.task = task;
+        meta.ingress_port = standard_metadata.ingress_port;
+        clone3(CloneType.I2E, 100, meta);
+    }
+
+
     action controller_debug_table_id(table_t table_id) {
         meta.table_id = table_id;
         controller_reply(TASK_DEBUG);