u_int8_t ip6f_reserved; /* reserved field */
u_int16_t ip6f_offlg; /* offset, reserved, and flag */
u_int32_t ip6f_ident; /* identification */
u_int8_t ip6f_reserved; /* reserved field */
u_int16_t ip6f_offlg; /* offset, reserved, and flag */
u_int32_t ip6f_ident; /* identification */