March 2018
Intermediate to advanced
626 pages
17h 32m
English
book
Network Analysis Using Wireshark 2 Cookbook - Second Edition
by Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Content preview from Network Analysis Using Wireshark 2 Cookbook - Second Edition
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IPv6 fragmentation
As mentioned in an earlier section, fragmentation is the process of dividing the packet into smaller fragments to fit the lowest MTU along the path. The way packet fragmentation is handled by IPv6 is completely different from IPv4. The following are a couple of the primary differences in how IPv6 handles the fragmentation:
- While in IPv4 any router is allowed to fragment the packet (assuming DF bit is not set), IPv6 only allows the source of the IPv6 packet to fragment and none of the transit nodes can fragment an IPv6 packet.
- In IPv4, the fragment details are carried as part of IPv4 header, but in IPv6 a new extension header is defined and this header will be included only in fragmented packets.
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