--- zzzz-none-000/linux-4.4.271/include/uapi/linux/if_pppox.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/uapi/linux/if_pppox.h	2023-04-19 10:22:30.000000000 +0000
@@ -47,6 +47,7 @@
  */
 struct pptp_addr {
 	__u16		call_id;
+	__u16		pad;
 	struct in_addr	sin_addr;
 };