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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: shmulik.hen@intel.com (Hen, Shmulik)
Cc: linux-net@vger.kernel.org ('LNML'),
	linux-kernel@vger.kernel.org ('LKML')
Subject: Re: change_mtu boundary checking error
Date: Tue, 17 Apr 2001 13:40:34 +0100 (BST)	[thread overview]
Message-ID: <E14pUmc-0002GY-00@the-village.bc.nu> (raw)
In-Reply-To: <07E6E3B8C072D211AC4100A0C9C5758302B271DB@hasmsx52.iil.intel.com> from "Hen, Shmulik" at Apr 17, 2001 05:29:05 AM

> Now, the high boundary seemed reasonable (ETH_FRAME_LEN - ETH_HLEN =
> ETH_DATA_LEN) which gives 1500, but why is the low boundary set to 68 ?
> According to my calculations, it should have been ETH_ZLEN - ETH_HLEN which
> gives 46.

The IPv4 minimum MTU is 68 bytes. Below that not all frames can be delivered


  reply	other threads:[~2001-04-17 12:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-17 12:29 Hen, Shmulik
2001-04-17 12:40 ` Alan Cox [this message]
2001-04-18  7:25 Hen, Shmulik
2001-04-18 12:22 ` Alan Cox

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