From owner-freebsd-net@FreeBSD.ORG Fri Feb 2 15:01:11 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 0A7B916A40A for ; Fri, 2 Feb 2007 15:01:11 +0000 (UTC) (envelope-from mav@alkar.net) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id 85C5C13C491 for ; Fri, 2 Feb 2007 15:01:08 +0000 (UTC) (envelope-from mav@alkar.net) Received: from [212.86.226.11] (account mav@alkar.net [212.86.226.11] verified) by cmail.optima.ua (CommuniGate Pro SMTP 5.0.11) with ESMTPA id 20413501; Fri, 02 Feb 2007 17:01:07 +0200 Message-ID: <45C35232.6010002@alkar.net> Date: Fri, 02 Feb 2007 17:01:06 +0200 From: Alexander Motin User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.8b) Gecko/20051108 MIME-Version: 1.0 To: Dave Baukus References: <1170386588.00681186.1170374401@10.7.7.3> In-Reply-To: <1170386588.00681186.1170374401@10.7.7.3> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, nvass@teledomenet.gr Subject: Re: ETIMEDOUT bug 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: Fri, 02 Feb 2007 15:01:11 -0000 Dave Baukus wrote: > There is a bug tcp_output() for at least freeBSD6.1 > that causes a perfectly good TCP to be dropped by its > retransmit timer; the application receives ETIMEDOUT. > This ETIMEDOUT problem is easily recreated on any old machine > using a single slow ethernet device and the ttcp test utility. The same problem is noticed on PPTP links in discussion "ng_pptpgre problems: tcp connections reset unexpectedly". There ENOBUFS is initiated by congestion control of ng_pptpgre node. Other symptoms are the same. -- Alexander Motin mav@alkar.net Optima Telecom