From owner-freebsd-net@FreeBSD.ORG Tue Mar 20 23:09:11 2007 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8F12716A402 for ; Tue, 20 Mar 2007 23:09:11 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from out5.smtp.messagingengine.com (out5.smtp.messagingengine.com [66.111.4.29]) by mx1.freebsd.org (Postfix) with ESMTP id 6846F13C45D for ; Tue, 20 Mar 2007 23:09:11 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from out1.internal (unknown [10.202.2.149]) by out1.messagingengine.com (Postfix) with ESMTP id E8A00209A8C; Tue, 20 Mar 2007 19:09:08 -0400 (EDT) Received: from heartbeat1.messagingengine.com ([10.202.2.160]) by out1.internal (MEProxy); Tue, 20 Mar 2007 19:09:08 -0400 X-Sasl-enc: /2fmfriXpw8IfU/K16ZcB+873gS5EGHQPneKfgkjAZyt 1174432151 Received: from [192.168.123.18] (82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254]) by mail.messagingengine.com (Postfix) with ESMTP id D8FDC2B9C0; Tue, 20 Mar 2007 19:09:10 -0400 (EDT) Message-ID: <46006994.5020008@FreeBSD.org> Date: Tue, 20 Mar 2007 23:09:08 +0000 From: "Bruce M. Simpson" User-Agent: Thunderbird 1.5.0.9 (X11/20070125) MIME-Version: 1.0 To: Jon Otterholm References: <460060A8.1080109@ide.resurscentrum.se> In-Reply-To: <460060A8.1080109@ide.resurscentrum.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org Subject: Re: ICMP-floods X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Mar 2007 23:09:11 -0000 I have a patch attached to http://wiki.freebsd.org/Networking to rate-limit ICMP which is generated by the forwarding path. It would be useful to find out if this offers symptomatic relief in this situation, although as Chuck points out, it is most likely being caused by a routing loop. Regards, BMS