ip6_hdr

type ip6_hdr = record

  ip6_ctlun: record

    case LongInt of

      0: (

          ip6_un1: record

            ip6_un1_flow: uint32_t;

            ip6_un1_plen: uint16_t;

            ip6_un1_nxt: uint8_t;

            ip6_un1_hlim: uint8_t;

          end;

        );

      1: (

          ip6_un2_vfc: uint8_t;

        );

  end;

  ip6_src: in6_addr;

  ip6_dst: in6_addr;

end;