Handbook of IPv4 to IPv6 Transition

76  n  Handbook of IPv4 to IPv6 Transition

At the destination, fragment packets are reassembled into their original, unfrag-

mented form, as illustrated in Figure 5.10. e following rules govern reassembly:

An original packet is reassembled only from fragment packets that have the

same source address, destination address, and fragment identification.

e unfragmentable part of the reassembled packet consists of all headers up

to, but not including, the Fragment header of the first fragment packet (that

n

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Original Packet:

+------------------+--------------+--------------+--//--+----------+

| Unfragmentable | First | Second | | Last |

| Part | Fragmen ...