Re: Preparing to Write Dissector for New IPv6 Destination Option

[Hadriel Kaplan <hadrielk () yahoo com>]

Try the attached.

There is one caveat: it won’t work correctly if you have a IPv6 Destination Options Header with the PDM option but also 
other option types in that same header.

Also, I have no idea if I did the time scaling correctly.

BTW, there’s a bug in the draft: page 8 says for the Options Length field "This field MUST be set to 16.” But really 
the field must be set to 12, since that’s the length of the PDM option.

-hadriel

Attachment: pdm.lua
Description:

> > On Jul 6, 2015, at 9:15 AM, Nalini Elkins <nalini.elkins () insidethestack com> wrote:
> >
> > Hello All,
> >
> > Please let me know if I should post this to the user's list.
> >
> > My proposal for a new IPv6 Destination Option was recently adopted by the IP Performance Metrics Working Group of 
> > the IETF.  It is at: 
> > http://datatracker.ietf.org/doc/draft-ietf-ippm-6man-pdm-option/   
> >
> > I have started implementation of this on FreeBSD.  Of course, one of the steps in this process is to write a 
> > Wireshark dissector!
> >
> > I have started with an LUA implementation.  (See attached)  I am having some problems as this is my first time with 
> > LUA.  
> >
> > The first problem is that I do not seem to be pointing to the payload of the IPv6 Destination Option correctly.  
> > The parsing should be for the field ipv6.opt.experimental.  But, I am not able to make this work.  I would 
> > appreciate any help.
> >
> > A PCAP is also attached.
> > Thanks,
> >
> > Nalini Elkins
> > Inside Products, Inc.
> > (831) 659-8360
> > www.insidethestack.com
> > <pdmIPSec.pcapng><pdmOriginal.lua>___________________________________________________________________________
>
>
>
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