diff -drupN a/include/uapi/asm-generic/socket.h b/include/uapi/asm-generic/socket.h --- a/include/uapi/asm-generic/socket.h 2018-08-06 17:23:04.000000000 +0300 +++ b/include/uapi/asm-generic/socket.h 2022-06-12 05:28:14.000000000 +0300 @@ -92,4 +92,6 @@ #define SO_CNX_ADVICE 53 +#define SO_COOKIE 57 + #endif /* __ASM_GENERIC_SOCKET_H */