In the IP, TCP or UDP headers is the "Checksum" field, which has two parts to
it. For the IP checksum this is:-
Header checksum: 0xbbd5 [correct]
[Good: True]
[Bad : False]
with similar for the TCP and UDP checksums.
Is there any difference from a logical point of view when using a display
filter to find packets with bad IP checksums between these two expressions:-
ip.checksum_bad == 1
or
ip.checksum_good == 0
As a checksum can only be correct or bad, surely both of these filters are the
same?
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