--- zzzz-none-000/linux-4.4.271/include/uapi/linux/ip.h 2021-06-03 06:22:09.000000000 +0000 +++ hawkeye-5590-750/linux-4.4.271/include/uapi/linux/ip.h 2023-04-19 10:22:30.000000000 +0000 @@ -102,7 +102,7 @@ __be32 saddr; __be32 daddr; /*The options start here. */ -}; +} __attribute__((packed, aligned(2))); struct ip_auth_hdr {