
174 Part Two • IPv6 Protocols
+------------------+--------+--------------+
| Unfragmentable |Fragment| second |
| Part | Header | fragment |
+------------------+--------+--------------+
o
o
o
+------------------+--------+----------+
| Unfragmentable |Fragment| last |
| Part | Header | fragment |
+------------------+--------+----------+
Each of the fragment-carrying packets has the same unfragmentable part,
with the Next Header field of the last header of that part set to 44, indicating
that the next header is a Fragment Header.
At the destination node, the process is reversed as fragment packets begin
arriving; if all the fragments have not been received within ...