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Re: [v6ops] Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)

Fernando Gont <fgont@si6networks.com> Tue, 11 June 2013 11:51 UTC

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Date: Tue, 11 Jun 2013 13:50:46 +0200
From: Fernando Gont <fgont@si6networks.com>
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To: Jared Mauch <jared@puck.nether.net>
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Cc: 6man@ietf.org, IPv6 Ops WG <v6ops@ietf.org>
Subject: Re: [v6ops] Limiting the size of the IPv6 header chain (draft-ietf-6man-oversized-header-chain)
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On 06/11/2013 11:50 AM, Jared Mauch wrote:
> 
> On Jun 11, 2013, at 12:23 AM, cb.list6 <cb.list6@gmail.com> wrote:
> 
>> I believe Warren's data hints at the idea that the packets will vanish if they don't fit a very specific profile.  
> 
> Very likely…
> 
> Anything beyond the ability of my device to filter poses a security risk.  

That's why we're considering limiting the size of the IPv6 header chain.



> Example from 2008 of operators turning off header processing:
> 
> http://www.gossamer-threads.com/lists/nsp/juniper/15066

I only skimmed through the that thread... but it seems unlreated to this
issue -- that thread seems to be about filtering RHT0, which has/had
known security issues such as being useful for amplification attacks.

Cheers,
-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492

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