From owner-freebsd-questions@FreeBSD.ORG Thu Dec 29 03:09:39 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C7E6C106566B for ; Thu, 29 Dec 2011 03:09:39 +0000 (UTC) (envelope-from kevin.wilcox@gmail.com) Received: from mail-pz0-f54.google.com (mail-pz0-f54.google.com [209.85.210.54]) by mx1.freebsd.org (Postfix) with ESMTP id 96D968FC12 for ; Thu, 29 Dec 2011 03:09:39 +0000 (UTC) Received: by dakp5 with SMTP id p5so12039162dak.13 for ; Wed, 28 Dec 2011 19:09:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=EjDeR3yRkz5aoEwqqgMGukB90T9ltOhb7m1uQWEJJ2E=; b=eowZqjm6NYXY8UGMzHYCCPebjTuRujMMKeStSxHWoUrpA7BN7FrUn1W0yB3hI2seZM H26UBW9o5XVgI8JjVaql6dx4v0u1iJin4x9/Ys+SIa4UQQ85J6GhDxBBkDPrz+qqU2m6 FnhSYpd/yodxJ+RRlR2pRzX/Wr8wKu0PJ4Kjg= MIME-Version: 1.0 Received: by 10.68.191.8 with SMTP id gu8mr80675115pbc.36.1325126750850; Wed, 28 Dec 2011 18:45:50 -0800 (PST) Received: by 10.68.2.104 with HTTP; Wed, 28 Dec 2011 18:45:50 -0800 (PST) Received: by 10.68.2.104 with HTTP; Wed, 28 Dec 2011 18:45:50 -0800 (PST) In-Reply-To: <20111229022538.GA38514@admin.sibptus.tomsk.ru> References: <20111228075422.GA18064@admin.sibptus.tomsk.ru> <4EFAE80D.9040900@my.gd> <20111228130734.GA23763@admin.sibptus.tomsk.ru> <4EFB1B4F.2090504@my.gd> <20111228175512.GB27286@admin.sibptus.tomsk.ru> <20111229022538.GA38514@admin.sibptus.tomsk.ru> Date: Wed, 28 Dec 2011 21:45:50 -0500 Message-ID: From: Kevin Wilcox To: Victor Sudakov Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: mutual forwarders in ISC BIND X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Dec 2011 03:09:40 -0000 On Dec 28, 2011 9:26 PM, "Victor Sudakov" wrote: > And the reason for the whole thread. One of the customers told me that > 8.8.8.8 is faster than our own DNS servers which are located on the > same 100 MBit/s LAN with them. I was shocked but it seems true, at > least for the answers which are not yet cached. That actually makes perfect sense. That's one of the Google DNS IP addresses and they see a LOT of traffic, they're probably going to have the majority of the domains your clients want to look up (assuming your clients are like mine and most of their lookups are general web traffic) already in cache - your servers will need to go through the whole lookup process. Still, after a day or two of use, I would think your servers would have the bulk of what they needed in their caches. You may want to enable logging to see which domains are being looked up (if it won't break any applicable laws or policies) and do some spot-checks to see why they may not be in your cache. kmw