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#ifndef _IP6T_AH_H
#define _IP6T_AH_H

struct ip6t_ah
{
        u_int32_t spis[2];                      /* Security Parameter Index */
        u_int32_t hdrlen;                       /* Header Length */
        u_int8_t  hdrres;                       /* Test of the Reserved Filed */
        u_int8_t  invflags;                     /* Inverse flags */
};

#define IP6T_AH_SPI 0x01
#define IP6T_AH_LEN 0x02
#define IP6T_AH_RES 0x04

/* Values for "invflags" field in struct ip6t_ah. */
#define IP6T_AH_INV_SPI         0x01    /* Invert the sense of spi. */
#define IP6T_AH_INV_LEN         0x02    /* Invert the sense of length. */
#define IP6T_AH_INV_MASK        0x03    /* All possible flags. */

#define MASK_HOPOPTS    128
#define MASK_DSTOPTS    64
#define MASK_ROUTING    32
#define MASK_FRAGMENT   16
#define MASK_AH         8
#define MASK_ESP        4
#define MASK_NONE       2
#define MASK_PROTO      1

#endif /*_IP6T_AH_H*/