From owner-freebsd-stable@FreeBSD.ORG Fri Jul 17 20:49:11 2009 Return-Path: Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 28AF41065670 for ; Fri, 17 Jul 2009 20:49:11 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout022.mac.com (asmtpout022.mac.com [17.148.16.97]) by mx1.freebsd.org (Postfix) with ESMTP id 158448FC18 for ; Fri, 17 Jul 2009 20:49:11 +0000 (UTC) (envelope-from cswiger@mac.com) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from cswiger1.apple.com ([17.227.140.124]) by asmtp022.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KMY001UU1TYRM40@asmtp022.mac.com> for freebsd-stable@FreeBSD.ORG; Fri, 17 Jul 2009 13:49:10 -0700 (PDT) Message-id: <7090AD67-2082-4AFA-B130-C20A7DC970FA@mac.com> From: Chuck Swiger To: Peter Much In-reply-to: Date: Fri, 17 Jul 2009 13:49:10 -0700 References: X-Mailer: Apple Mail (2.935.3) Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Can an app crash from a single TCP packet lost in transmission? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Jul 2009 20:49:11 -0000 On Jul 17, 2009, at 12:12 PM, Peter Much wrote: [ ... ] > One other thing did happen between 03:51 and 03:52 - the DSL > internet connection did disconnect/reconnect and obtained a new > IP adress. Afterwards, a script does flush and reload an ipfw table() > with the new local adresses - and during this process one(!) packet > of the database session was dropped. Well, there you go: having your IP change is certainly going to break existing network connections; I don't believe there is anything which is going to move the existing connection state in a NAT translation layer or whatever over to the new IP. Presumably you can obtain a static IP and avoid such issues. -- -Chuck