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From: Pekka Pietikainen <pp@netppl.fi>
To: Carlos Velasco <carlosev@newipnet.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4.20 Broken Path MTU Discovery?
Date: Mon, 3 Feb 2003 02:23:02 +0200	[thread overview]
Message-ID: <20030203002302.GA32336@netppl.fi> (raw)
In-Reply-To: <200302030108240978.2B66BB7E@192.168.128.16>

On Mon, Feb 03, 2003 at 01:08:24AM +0100, Carlos Velasco wrote:
> *Info added*
> 
> This issue is not shown when MTU in router is 600 or bigger.
> If I set router MTU to 500 the problem is as show below.
See /proc/sys/net/ipv4/route/min_pmtu, which defaults to 552. 

And there's a perfectly good reason to have a minimum value,
guess what happens if someone starts spoofing fragmentation needed
packets that suggest a MTU of 68 bytes would be appropriate?

  reply	other threads:[~2003-02-03  0:13 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-02-02 18:58 2.4.20 Broken Path MTU Discovery? Carlos Velasco
2003-02-03  0:08 ` Carlos Velasco
2003-02-03  0:23   ` Pekka Pietikainen [this message]
     [not found] <200302021958160177.2A4B5622@192.168.128.16.suse.lists.linux.kernel>
2003-02-03  0:29 ` Andi Kleen
     [not found]   ` <1044279732.20152.6.camel@irongate.swansea.linux.org.uk>
2003-02-03 14:45     ` Carlos Velasco
2003-02-04  6:54       ` David S. Miller

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