From owner-freebsd-net@FreeBSD.ORG Wed Oct 19 13:59:29 2005 Return-Path: X-Original-To: freebsd-net@freebsd.org 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 3BADE16A41F for ; Wed, 19 Oct 2005 13:59:29 +0000 (GMT) (envelope-from discussion-lists@linnet.org) Received: from thorn.pobox.com (thorn.pobox.com [208.210.124.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id D87EA43D46 for ; Wed, 19 Oct 2005 13:59:28 +0000 (GMT) (envelope-from discussion-lists@linnet.org) Received: from thorn (localhost [127.0.0.1]) by thorn.pobox.com (Postfix) with ESMTP id 32591E4; Wed, 19 Oct 2005 09:54:23 -0400 (EDT) Received: from mappit.local.linnet.org (212-74-113-67.static.dsl.as9105.com [212.74.113.67]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by thorn.sasl.smtp.pobox.com (Postfix) with ESMTP id F0C5E37F9; Wed, 19 Oct 2005 09:54:21 -0400 (EDT) Received: from lists by mappit.local.linnet.org with local (Exim 4.54 (FreeBSD)) id 1ESETV-000HAC-3Q; Wed, 19 Oct 2005 14:59:25 +0100 Date: Wed, 19 Oct 2005 14:59:25 +0100 From: Brian Candler To: Anton Bester Message-ID: <20051019135924.GA65967@uk.tiscali.com> References: <200510181954020250.00A66152@196.25.53.68> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200510181954020250.00A66152@196.25.53.68> User-Agent: Mutt/1.4.2.1i Cc: freebsd-net@freebsd.org Subject: Re: Bind 8 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: Wed, 19 Oct 2005 13:59:29 -0000 On Tue, Oct 18, 2005 at 07:54:02PM +0200, Anton Bester wrote: > The following is a tcpdump from the secondary when bind is running: You really want to use tcpdump -n. Otherwise, every packet seen will trigger a new reverse DNS lookup, which in turn will trigger your nameserver to make further lookups to other nameservers on the Internet. This may mask any underlying problem. Regards, Brian.