For example: An IP header inside an ICMP message. In that case we have two IP Headers in one packet.
But can I limit the display filter (e.g. ip.dst) to only one of them, like in the columns dialog?
I think @cmaynard would like the same feature. :-)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10379
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Maybe Wireshark could be enhanced to make use of the occurrence specifier in display filters similar to when adding custom columns, perhaps even using the same syntax?
For example: ip.src#1 == 1.2.3.4
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3791
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Maybe it would be possible to extend the display filters somehow to be able to filter based on something like what tshark provides with its "-Eoccurrence=f|l|a" capabilities? Today, essentially Wireshark filters packets using "-Eoccurrence=a", but if that feature can be added to tshark, then at least in theory it could be added to Wireshark?
This doesn't solve your problem but is a start if you ask for an enhancement.
https://osqa-ask.wireshark.org/questi...
@bubbasnmp, the enhancements I proposed in the 2 bug reports you referenced, namely Bug 3791 and Bug 10379, never received any feedback, either positive or negative, so I don't know what the interest level is within the Wireshark community for such an enhancement. It would probably be better if someone interested in such a feature opens a new enhancement bug report specifically requesting this feature to be added; perhaps then it will garner more attention.
I think Bug 3791 describes the enhancement correct, as my problem occurs when we tunnel the traffic. So I Have voted for improvement.
Not sure it's what you want, but wouldn't you be able to use the "frame[POS] == hex-value" filter?
Asked: 2019-11-19 21:57:57 +0000
Seen: 1,406 times
Last updated: Jun 22
Display filter Layers added here: 6759: dfilter: Add syntax to match specific layers in the protocol stack
Discussion of nested (occurrences?) here: [Wireshark-dev] Filter expressions for recursive structures