--- zzzz-none-000/linux-4.4.271/include/linux/ipv6.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/linux/ipv6.h	2023-04-19 10:22:30.000000000 +0000
@@ -5,6 +5,7 @@
 
 #define ipv6_optlen(p)  (((p)->hdrlen+1) << 3)
 #define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
+
 /*
  * This structure contains configuration options per IPv6 link.
  */