From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Yongjun Subject: Re: [PATCH] Fix bug of update IPv4 PMTU when received ICMP Fragmentation Needed message Date: Mon, 04 Jun 2007 13:38:41 +0800 Message-ID: <4663A561.7070300@cn.fujitsu.com> References: <46635F39.2090009@cn.fujitsu.com> <20070604025528.GA27750@gondor.apana.org.au> <46638F2D.90608@cn.fujitsu.com> <20070604041406.GA28263@gondor.apana.org.au> <466395F1.7060003@cn.fujitsu.com> <20070604045506.GA28580@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Herbert Xu Return-path: Received: from [222.73.24.84] ([222.73.24.84]:58652 "EHLO song.cn.fujitsu.com" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751824AbXFDFo5 (ORCPT ); Mon, 4 Jun 2007 01:44:57 -0400 In-Reply-To: <20070604045506.GA28580@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org I know, I misunderstand the iph->tot_len, the ICMP payload is not contained a valid ipv4 packet. I do this under IPv6, it has no problem because IPv6 does not check this. ^_^ Thank you very much. > But this is not the old_mtu field that we were talking about. The > old_mtu field comes from iph->tot_len which is the length of field > in the *original* IP header. We're certainly not allowed touch that > field. > > Cheers, > -- A new email address of FJWAN is launched from Apr.1 2007. The updated address is: yjwei@cn.fujitsu.com -------------------------------------------------- Wei Yongjun Development Dept.I Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST) 8/F., Civil Defense Building, No.189 Guangzhou Road, Nanjing, 210029, China TEL: +86+25-86630523-858 COINS: 79955-858 FAX: +86+25-83317685 MAIL: yjwei@cn.fujitsu.com --------------------------------------------------