Wireshark-bugs: [Wireshark-bugs] [Bug 7529] Request for ax.25 dissector

Date: Thu, 26 Jul 2012 03:17:19 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7529

--- Comment #7 from Tyson Key <tyson.key@xxxxxxxxx> 2012-07-26 03:17:18 PDT ---
Sorry to hear, Richard.

Thanks for the update regarding the status of the patches. I was uncertain,
since I didn't follow the entire thread prior to downloading them, and I
haven't been paying much attention to the state of AX.25 under Linux for a
while.

Tyson.

(In reply to comment #6)
> (In reply to comment #1)
> > Hi Folkert,
> > 
> > It's strange that you mention it. I found a patch that adds support for AX.25
> > at http://www.rns-stearn.demon.co.uk/ax25.wireshark.2010-04-10/ - but it needs
> > updating to work with the latest SVN revisions; and I believe that the
> > Wireshark developers have previously rejected it.
> > 
> > Tyson.
> 
> Hi Tyson
> 
> A correction, the Wireshark developers never "rejected" the patches, they were
> never formally offered.
> 
> If you apply the patches as per the README to the approprate source tree of
> Wireshark you will get a version of Wireshark with AX.25, NetROM, ...
> 
> The reason the patches were never offered is that there is an issue with the
> implementation of AX.25 in Linux.  The "AX.25" packet in Linux has an extra
> byte at the beginning, this in _not_ in the AX.25 spec and needs to be handled
> correctly, i.e. the AX.25 dissector must not see it.  In the patches mentioned
> above the extra byte is _not_ handled correctly, the correct handling is only
> partially there.  I was not going to offer the patches until I had resolved the
> issue.
> 
> Since I uploaded those patches life has become difficult, also I am no longer
> able to test as I do not have an active AX.25 system.  I will endevour to
> document where my efforts have got to and what I saw the next steps being and
> post that to this record so others can, hopefully, take the project onward.
> 
> Regards
>   Richard (G1SOG)

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