This is our old Q&A Site. Please post any new questions and answers at ask.wireshark.org.

Hello, I'm trying to implement a dissector for a modification of a message from the ICMPv6 protocol. The modification is basically using an 8-bit reserved field in the ARO (Address Registration Option) message and populating it with 3 new values (4 + 2 + 2 bits).

From this documentation link, I can see that Wireshark supports the following ARO related filters: icmpv6.opt.aro.eui64, icmpv6.opt.aro.registration_lifetime and icmpv6.opt.aro.status. What I'd like to do in my dissector is extend the existing ICMPv6 dissector by dissecting the three new values in the reserved 8-bit field, as well as adding three additional filters for each value.

My doubts are: Is it possible to accomplish this, possibly using a chained dissector or post-dissector? Can I edit/modify a tree created by another dissector, when I call it using third_party_dissector:call(tvb, pinfo, tree)? What is the best choice: the Lua API or Wireshark Generic Dissector plugin?

Best regards, and thanks in advance!

asked 17 Apr '13, 05:54

ojay's gravatar image

ojay
16347
accept rate: 0%

edited 17 Apr '13, 05:54

Be the first one to answer this question!
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×637
×431
×4

question asked: 17 Apr '13, 05:54

question was seen: 1,705 times

last updated: 17 Apr '13, 05:54

p​o​w​e​r​e​d by O​S​Q​A