From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Lau Subject: Re: A problem about ICMP packet-too-big message handler Date: Tue, 27 Jan 2015 21:19:29 -0800 Message-ID: <20150128051929.GA3369592@devbig242.prn2.facebook.com> References: <54C78B8D.1070104@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: netdev , "David S. Miller" To: Yang Yingliang Return-path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:58674 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762573AbbA1FTs (ORCPT ); Wed, 28 Jan 2015 00:19:48 -0500 Content-Disposition: inline In-Reply-To: <54C78B8D.1070104@huawei.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, Jan 27, 2015 at 08:58:53PM +0800, Yang Yingliang wrote: > Hi, > > My kernel is 3.10 LTS. > > I got a problem here about handling ICMP packet-too-big message. > > Before sending a packet-too-big packet : The expires should be set by the host _receiving_ the icmpv6 too-big. Can you spell out some details of the outgoing icmpv6 too-big packet? like, the src/dst ip of the icmpv6 and the original ip packet that triggered the too-big.