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From: mike@BRL.ARPA (Mike Muuss)
Newsgroups: comp.unix.wizards
Subject: Re:  IP fragmentation, and how to avoid it
Message-ID: <7431@brl-adm.ARPA>
Date: Mon, 18-May-87 14:26:15 EDT
Article-I.D.: brl-adm.7431
Posted: Mon May 18 14:26:15 1987
Date-Received: Tue, 19-May-87 04:16:21 EDT
Sender: news@brl-adm.ARPA
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The problem is fixed by a change in the TCP Max Seg Size used on the
connection.  The algorithm for computing this in 4.2 BSD (and thus
the SUN OS's) is rather simplistic, resulting in exactly the sort of
difficulties you reported.

A long time ago, I posted a few lines of code that fix this problem.
Mike Karels improved them some more, and the correct behavior is now
standard in 4.3 BSD UNIX.  I'm certain it is a mater of time until
SUN "integrates" this code into their product.
	-Mike