IPv6??????

1
IPv6??????
2
IPv6?????

• IPv6??????40?????????(base header),???????????????
  (extension header),??????

???
????
???? 1
???? n
??

3
????
0 4 12
16 24 31
4
????

• ??(version) ?4??,?????,IPv6????6
• ???(priority) ?4????????????????????(flow)???IPv6?
  ??????,??????????????????????????8????,??????,????
  ?????????????,????07?????????????,?????815??????
  ????,????????????
• ???(flow label) ?24??? IPv6??????????,???????????
  ????????????????? ????0
• ?????(payload length) ?16??? ?????????,IPv6???????
  IPv6??????,????????
• ?????(next header) ?8???
• ????(hop limit)?8???

5
????