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Date:      Fri, 9 Feb 1996 10:31:18 -0500
From:      "Garrett A. Wollman" <wollman@lcs.mit.edu>
To:        "Adam David" <adam@veda.is>
Cc:        freebsd-current@freebsd.org
Subject:   Re: TCP/IP interoperability problem, workaround
Message-ID:  <9602091531.AA03657@halloran-eldar.lcs.mit.edu>
In-Reply-To: <199602090000.AAA03653@veda.is>
References:  <9602082045.AA28752@halloran-eldar.lcs.mit.edu> <199602090000.AAA03653@veda.is>

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<<On Fri, 9 Feb 1996 00:00:05 +0000 (GMT), "Adam David" <adam@veda.is> said:

> Okay, that makes good sense. Now, there is a high likelihood of there
> still being vast numbers of such broken gateways out there...

Actually, these have become quite rare in most parts of the world.
(Nowadays you would buy a dedicated router or run FreeBSD where five
years ago you might still use PCROUTE or the MIT C Gateway.)
Particularly since Windows 95 does MTU discovery and has no way to
turn it off...

> Or as a third option, might it be possible or even desirable to implement a
> fallback mechanism whereby if Path MTU Discovery fails due to a non-compliant
> gateway

There is no way to distinguish this case from `the other host is not
responding'.

-GAWollman

--
Garrett A. Wollman   | Shashish is simple, it's discreet, it's brief. ... 
wollman@lcs.mit.edu  | Shashish is the bonding of hearts in spite of distance.
Opinions not those of| It is a bond more powerful than absence.  We like people
MIT, LCS, ANA, or NSA| who like Shashish.  - Claude McKenzie + Florent Vollant



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