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Re: [v6ops] Some stats on IPv6 fragments and EH filtering on the Internet

Jen Linkova <furry13@gmail.com> Tue, 05 November 2013 03:23 UTC

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References: <5278275C.50206@gont.com.ar> <alpine.DEB.2.02.1311050028410.26054@uplift.swm.pp.se> <52783535.9030200@si6networks.com> <20131105001243.53E28985D0D@rock.dv.isc.org> <527839C6.3000805@viagenie.ca> <2134F8430051B64F815C691A62D98318148100@XCH-BLV-504.nw.nos.boeing.com> <001F10BA-F1D4-4AFA-BC0B-E574739782FA@ecs.soton.ac.uk> <F4AB804C-2C8E-40EF-ACE9-0A901E4F5122@employees.org> <EMEW3|143bd43fa5d2a4711db6534159f9ff03pA41VQ03tjc|ecs.soton.ac.uk|001F10BA-F1D4-4AFA-BC0B-E574739782FA@ecs.soton.ac.uk> <CAFU7BASp6fBg4i3P9Ld6PNnuC8N0Syovj3zJebX8hBRZNFVJKQ@mail.gmail.com> <9DC9AFAD-CB63-46BC-B8E1-229F5EA64E6E@ecs.soton.ac.uk> <EMEW3|9997439ba011697baaae10f67ec99f9fpA42Mk03tjc|ecs.soton.ac.uk|9DC9AFAD-CB63-46BC-B8E1-229F5EA64E6E@ecs.soton.ac.uk> <52785CA4.1060600@si6networks.com>
From: Jen Linkova <furry13@gmail.com>
Date: Tue, 05 Nov 2013 04:23:02 +0100
Message-ID: <CAFU7BATbR693eBU0sXQBDkp_-hu_nNW2uxrWtLaO=nJ9KBg07w@mail.gmail.com>
To: Fernando Gont <fgont@si6networks.com>
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Subject: Re: [v6ops] Some stats on IPv6 fragments and EH filtering on the Internet
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-v6ops@ to minimize the noise

On Tue, Nov 5, 2013 at 3:49 AM, Fernando Gont <fgont@si6networks.com> wrote:
>>> It could be verified by checking the hop limit from the your machine
>>> to the server you are testing and then vary the hop limits of probe
>>> packets - so you can see when you stop receiving 'time exceeded’.
>>
>> Modifying traceroute itself to slip in some extension headers might be useful?  Much as you can check DSCP rewrites, for example.
>
> FWIW, I'm in the process of updating the toolkit to support this sort of
> thing.. Should have something along these lines shortly.

It would be interesting to do such measurements using Atlas but AFAIR
it does not have an option to send packets with extension headers..
Just curious - have you contacted RIPE Atlas guys? I could ask them if
you think it makes sense.


-- 
SY, Jen Linkova aka Furry

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