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Date:      Fri, 25 Jun 1999 10:23:48 -0500
From:      Dan Nelson <dnelson@emsphone.com>
To:        "Seo Boon, Ng" <seong@staff.singnet.com.sg>
Cc:        freebsd-isp@FreeBSD.ORG, questions@FreeBSD.ORG
Subject:   Re: Questions: FreeBSD TCP/IP stack
Message-ID:  <19990625102348.A82810@dan.emsphone.com>
In-Reply-To: <Pine.OSF.4.05.9906252247550.12007-100000@singapura.singnet.com.sg>; from "Seo Boon, Ng" on Fri Jun 25 22:56:55 GMT 1999
References:  <Pine.OSF.4.05.9906252247550.12007-100000@singapura.singnet.com.sg>

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In the last episode (Jun 25), Seo Boon, Ng said:
> 
> Does FreeBSD-XXX RELEASE TCP/IP stack implement SACK(rfc2018) and
> TCPLW(in rfc1323)?
> 
> If yes, could somebody points me to any documentation on how to
> modify these parameters? Thanks in advance.

rfc1323 is supported, and is enabled by default.  Edit /etc/rc.conf and
set tcp_extensions="YES"to make sure.

Luigi Rizzo has patches to enable SACK on 2.1.0 at
http://www.iet.unipi.it/~luigi/sack.html.  I updated his patches to
work on 2.2 and 3.0.  The 2.2 patches apply cleanly to 2.2.8 (I emailed
them to soemone who says they work).  3.* has changed enough that my
patches no longer apply cleanly to 3.2.

	-Dan Nelson
	dnelson@emsphone.com


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