From owner-freebsd-net@FreeBSD.ORG Mon Jan 29 18:25:30 2007 Return-Path: X-Original-To: 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 F3C9316A401 for ; Mon, 29 Jan 2007 18:25:29 +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 7C3EF13C461 for ; Mon, 29 Jan 2007 18:25:29 +0000 (UTC) (envelope-from mav@alkar.net) Received: from [195.248.178.122] (account mav@alkar.net HELO [192.168.3.2]) by cmail.optima.ua (CommuniGate Pro SMTP 5.0.11) with ESMTPA id 20273000; Mon, 29 Jan 2007 20:25:28 +0200 Message-ID: <45BE3C17.3070606@alkar.net> Date: Mon, 29 Jan 2007 20:25:27 +0200 From: Alexander Motin User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.13) Gecko/20060414 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Nikos Vassiliadis References: <1169850194.00677461.1169839202@10.7.7.3> <1169882591.00677647.1169870401@10.7.7.3> <1170080583.00678976.1170067803@10.7.7.3> In-Reply-To: <1170080583.00678976.1170067803@10.7.7.3> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: net@freebsd.org Subject: Re: ng_pptpgre problems: tcp connections reset unexpectedly 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: Mon, 29 Jan 2007 18:25:30 -0000 Nikos Vassiliadis wrote: > I already have an mpd4 installation working, > but had some problems using pptp with it. I will try again with > the RC you just released. It is released now. And if you will have there any problems, they must be fixed before next release. So inform me. >>I do not use pptp actively, to say for sure, but you can try to play >>with such pptp options like delayed-ack, always-ack and windowing. > 4) >> delayed-ack disable >> always-ack enable >> windowing disable > > seem to work, sometimes it's not that easy to > reproduce the problem. >>Looking here I can see that it is your local machine (213.142.137.253) >>sent "R" - Reset request just after normal acknowledge packet. I don't >>see the reason for such it's behaviour. > > To complicate things a bit more sftp over the same the link works reliably > (different sockopts?). http fails, ftp fails but sftp works as usual. > > Eventually a read(2) fails: > 1794 fetch CALL read(0x3,0x8057730,0xd0) > 1794 fetch RET read -1 errno 60 Operation timed out Strange result IMHO for reading from TCP socket. I will try to investigate this. > It seems to work with disabled windowing. If you are interested in > tracking down this, I would be glad to help. I will try to look into it. If you will have some more interesting results send them to me. -- Alexander Motin mav@alkar.net Optima Telecom