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Date:      Wed, 12 Jul 2000 11:52:30 -0500 (CDT)
From:      Jonathan Lemon <jlemon@flugsvamp.com>
To:        jpsp@rccn.net, isp@freebsd.org
Subject:   Re: Enable SACK
Message-ID:  <200007121652.LAA51172@prism.flugsvamp.com>
In-Reply-To: <local.mail.freebsd-isp/Pine.BSF.4.21.0007121729390.29263-100000@atlas.rccn.net>
References:  <local.mail.freebsd-isp/20000712092015.A17517@dan.emsphone.com>

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In article <local.mail.freebsd-isp/Pine.BSF.4.21.0007121729390.29263-100000@atlas.rccn.net> you write:
>
>On Wed, 12 Jul 2000, Dan Nelson wrote:
>
>> In the last episode (Jul 12), Joao Pagaime said:
>> > 
>> > How do I enable selective acknowledges (rfc2018/SACK) on a fBSD3.3 ?
>> > 
>> > I can't find anything interesting with "sysctl", nor in the LINT
>> > kernel configuration file, however there's a lot of references to it
>> > on the kernel source files.
>> > 	I enabled rfc1323 but I believe this doesn't directly activate
>> > elective acknowledges (at least rfc1323 states so).
>> 
>> FreeBSD doesn't support TCP SACK, unfortunately.  
>
>Why not?  Does anyone happen to know if there's any
>plans for supporting it in the future?

Yes, there are some patches for -stable which implement SACK;
these will be added as soon as the author feels comfortable
with them.
--
Jonathan


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