From owner-freebsd-net  Wed Jan  1  4:45: 7 2003
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Date: Wed, 1 Jan 2003 04:45:06 -0800 (PST)
From: Rostislav Krasny <rosti_bsd@yahoo.com>
Subject: Re: PPPoE and troubles with TCP 
To: Eli Dart <dart@nersc.gov>
Cc: freeBSD-net@freebsd.org
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X-Loop: FreeBSD.org

I make few further testings...

According to http://uptime.netcraft.net/up/graph?site=www.ssh.com
the host www.ssh.com uses NetBSD or OpenBSD operating system. When my
box is configured according to the following expression:

net.inet.tcp.rfc1323 == 1

(that is the default for FreeBSD 4.7-RELEASE), I have the same trouble
with www.netbsd.org like the trouble that I have with www.ssh.com.
According to http://uptime.netcraft.net/up/graph?site=www.openbsd.org
the host www.openbsd.com uses Solaris operating system. This is why I
have no problem with http://www.openbsd.org/
So, the problem with www.ssh.com looks like a bug in NetBSD's or/and
OpenBSD's implementation of the TCP protocol. And also, one of the
following configurations of my box:

MRU == MTU == 1484 (or smaller)
or
net.inet.tcp.rfc1323 == 0

solves the problem with http://www.netbsd.org/ too.

I think that cooperation with NetBSD or/and OpenBSD team(s) would be
helpful and efficient for localization of the problem.

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