0   1   2   3  4   5   6   7   8   9   a  b  c  d  e  f    0123456789abcdef
00: 04 1a 86 10 98 8f 65 4c 34 03 80 01 ff ff ff ff    ??????eL4???????
10: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ??????????????