#ifndef _IP6T_MH_H#define _IP6T_MH_H/* MH matching stuff */structip6t_mh{u_int8_ttypes[2];/* MH type range */u_int8_tinvflags;/* Inverse flags */};/* Values for "invflags" field in struct ip6t_mh. */#define IP6T_MH_INV_TYPE 0x01 /* Invert the sense of type. */#define IP6T_MH_INV_MASK 0x01 /* All possible flags. */#endif /*_IP6T_MH_H*/