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List:       quagga-dev
Subject:    [quagga-dev 8954] Re: [PATCH] ospf6d: account for IPv6 headers in
From:       "John W. O'Brien" <john () saltant ! com>
Date:       2011-11-26 15:20:55
Message-ID: 4ED103D7.8020808 () saltant ! com
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On 11/17/2011 01:05 PM, Dmitrij Tejblum wrote:
> John W. O'Brien wrote:
>> This patch accounts for the essential header only, and not for
>> permissible extra headers which can still induce fragmentation. A
>> complete resolution would require additional information from the
>> kernel which is not generally available.
> Yes, your fix looks correct. Actually, the very similar patch has been
> committed to the RE-testing-0.99 branch few months ago, but,
> unfortunately, it was not merged to master until now. I have just merged
> it.
> 
> (The 'release engineering process' we follow is described at
> http://sourceforge.net/apps/mediawiki/quagga/index.php?title=ReleaseEngineering

Dmitrij,

Yes, I agree that the accepted patch [1] appears, upon inspection, to be
functionally identical to the patch I proposed, though I have not had
(and probably will not have for a while) a chance to test it. I also
appreciate that ospf6_packet_max() provides a desirable decoupling
point, for when Quagga learns how to discover the presence of extra headers.

Cheers,
John

[1] quagga.git:
ospf6d: check MTU with message header size in mind
681b84e8f50a09ff871d9e6536e8d8afb115ce13

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