text: #ifndef _IP6T_FRAG_H
  #define _IP6T_FRAG_H
  
  struct ip6t_frag
  {
  	u_int32_t ids[2];			/* Security Parameter Index */
  	u_int32_t hdrlen;			/* Header Length */
  	u_int8_t  flags;			/*  */
  	u_int8_t  invflags;			/* Inverse flags */
  };
  
  #define IP6T_FRAG_IDS 		0x01
  #define IP6T_FRAG_LEN 		0x02
  #define IP6T_FRAG_RES 		0x04
  #define IP6T_FRAG_FST 		0x08
  #define IP6T_FRAG_MF  		0x10
  #define IP6T_FRAG_NMF  		0x20
  
  /* Values for "invflags" field in struct ip6t_frag. */
  #define IP6T_FRAG_INV_IDS	0x01	/* Invert the sense of ids. */
  #define IP6T_FRAG_INV_LEN	0x02	/* Invert the sense of length. */
  #define IP6T_FRAG_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_FRAG_H*/
  