#pragma once enum { XT_LENGTH_INVERT = 1 << 0, /* IP header plus payload */ XT_LENGTH_LAYER3 = 1 << 1, /* Strip IP header: */ XT_LENGTH_LAYER4 = 1 << 2, /* Strip TCP/UDP/etc. header */ XT_LENGTH_LAYER5 = 1 << 3, /* TCP/UDP/SCTP payload */ XT_LENGTH_LAYER7 = 1 << 4, }; struct xt_length_mtinfo2 { u_int32_t min, max; u_int16_t flags; };