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Re: Broken PMTUD in FreeBSD?
From: Phil Dibowitz <webmaster () ipom com>
Date: Tue, 11 Jun 2002 23:48:48 -0700

I thought I'd update the list:

Mike Silbersack, a FreeBSD developer, had the following to say to me and the freebsd-net list:
> I did some quick investigation last night, and agree with Phil that this
> is a bug.  When the syncache was implemented, only a subset of the normal
> tcp output code was copied over for the purpose of sending syn-acks.  One
> part of the code that was not moved over was the part that determines when
> the DF and tos bits are set.
>
> I also agree with Mikael that this isn't an important issue, given that
> syn-ack packets are quite tiny.  Nonetheless, I will commit a fix in the
> next few days.  However, it's too late to MFC it in time for 4.6-release.

So it will be fixed, and it was a bug. Thanks to everyone who responded, and thanks to Mike for the quick response.

Phil
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Insanity Palace of Metallica
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