6 u_int32_t spis[2]; /* Security Parameter Index */
7 u_int32_t hdrlen; /* Header Length */
8 u_int8_t hdrres; /* Test of the Reserved Filed */
9 u_int8_t invflags; /* Inverse flags */
12 #define IP6T_AH_SPI 0x01
13 #define IP6T_AH_LEN 0x02
14 #define IP6T_AH_RES 0x04
16 /* Values for "invflags" field in struct ip6t_ah. */
17 #define IP6T_AH_INV_SPI 0x01 /* Invert the sense of spi. */
18 #define IP6T_AH_INV_LEN 0x02 /* Invert the sense of length. */
19 #define IP6T_AH_INV_MASK 0x03 /* All possible flags. */