diff --git a/openolt.proto b/openolt.proto
index 2d26d66..c9f6d98 100644
--- a/openolt.proto
+++ b/openolt.proto
@@ -32,6 +32,13 @@
         };
     }
 
+    rpc OnuPacketOut(OnuPacket) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/OnuPacketOut"
+          body: "*"
+        };
+    }
+
     rpc FlowAdd(Flow) returns (Empty) {
         option (google.api.http) = {
           post: "/v1/FlowAdd"
@@ -106,6 +113,12 @@
     bytes pkt = 3;
 }
 
+message OnuPacket {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    bytes pkt = 3;
+}
+
 message Classifier {
     fixed32 o_tpid = 1;
     fixed32 o_vid = 2;