icmp6_hdr

type icmp6_hdr = record

  icmp6_type: uint8_t;

  icmp6_code: uint8_t;

  icmp6_cksum: uint16_t;

  icmp6_dataun: record

    case LongInt of

      0: (

          icmp6_un_data32: array [0..0] of uint32_t;

        );

      1: (

          icmp6_un_data16: array [0..1] of uint16_t;

        );

      2: (

          icmp6_un_data8: array [0..3] of uint8_t;

        );

  end;

end;