From owner-freebsd-net Mon Oct 21 14:15:25 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8FF4437B404 for ; Mon, 21 Oct 2002 14:15:24 -0700 (PDT) Received: from InterJet.dellroad.org (adsl-63-194-81-26.dsl.snfc21.pacbell.net [63.194.81.26]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2521643E3B for ; Mon, 21 Oct 2002 14:15:23 -0700 (PDT) (envelope-from archie@dellroad.org) Received: from arch20m.dellroad.org (arch20m.dellroad.org [10.1.1.20]) by InterJet.dellroad.org (8.9.1a/8.9.1) with ESMTP id OAA51965; Mon, 21 Oct 2002 14:05:26 -0700 (PDT) Received: from arch20m.dellroad.org (localhost [127.0.0.1]) by arch20m.dellroad.org (8.12.6/8.12.6) with ESMTP id g9LL5QON059865; Mon, 21 Oct 2002 14:05:26 -0700 (PDT) (envelope-from archie@arch20m.dellroad.org) Received: (from archie@localhost) by arch20m.dellroad.org (8.12.6/8.12.6/Submit) id g9LL5PjY059864; Mon, 21 Oct 2002 14:05:25 -0700 (PDT) From: Archie Cobbs Message-Id: <200210212105.g9LL5PjY059864@arch20m.dellroad.org> Subject: Re: MPD PPTP tunneling intermittantly fails In-Reply-To: "from Leonard Chung at Oct 20, 2002 10:19:46 pm" To: Leonard Chung Date: Mon, 21 Oct 2002 14:05:25 -0700 (PDT) Cc: freebsd-net@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL88 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Leonard Chung writes: > Some additional info: from looking at an ethereal trace, I'm seeing source > quenches coming back to the machine VPN'ing in. Interestingly, ethereal also > reports an invalid checksum on a bunch of those packets. The strange thing > is, this machine has acted as a router/NAT for quite a while and so of all > the machines on the network, it's hardware is probably the most stable > (easily 150+ day uptimes). Not sure what that all means, probably worth further investigation. Don't know about Etherreal, but tcpdump had a bug where it would declare an invalid checksum on packets for which only the first portion was captured (due to a limited snap length). Etherreal may possibly have the same problem. -Archie __________________________________________________________________________ Archie Cobbs * Packet Design * http://www.packetdesign.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message