Index: abi/include/abi/ipc/ipc.h
===================================================================
--- abi/include/abi/ipc/ipc.h	(revision 897fd8f11ec6c9c4a63697b4ccc6ab67c8be92f2)
+++ abi/include/abi/ipc/ipc.h	(revision ee6f4342058a8205c52ba1e31e063a17c0cf6f18)
@@ -60,4 +60,7 @@
 #define IPC_CALL_NOTIF           (1 << 3)
 
+/** The call was automatically answered by the kernel due to error */
+#define IPC_CALL_AUTO_REPLY      (1 << 4)
+
 /**
  * Maximum buffer size allowed for IPC_M_DATA_WRITE and