From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: why is IP_MAX_MTU limited to 65520 bytes Date: Tue, 25 Aug 2009 16:30:03 -0700 (PDT) Message-ID: <20090825.163003.153087693.davem@davemloft.net> References: <1251242740.3169.69.camel@w-sridhar.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: sri@us.ibm.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:53958 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932389AbZHYX3v (ORCPT ); Tue, 25 Aug 2009 19:29:51 -0400 In-Reply-To: <1251242740.3169.69.camel@w-sridhar.beaverton.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Sridhar Samudrala Date: Tue, 25 Aug 2009 16:25:40 -0700 > Any reason why the maximum IP payload is limited to IP_MAX_MTU(0xFFF0) bytes > instead of the maximum possible value of 0xFFFF 0xffff is an odd value, IP fragments must be a multiple of 8 bytes, etc. etc.