From owner-freebsd-stable@FreeBSD.ORG Wed Sep 20 07:08:23 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7F5B616A407 for ; Wed, 20 Sep 2006 07:08:23 +0000 (UTC) (envelope-from pinoyskull@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.230]) by mx1.FreeBSD.org (Postfix) with ESMTP id D708C43D46 for ; Wed, 20 Sep 2006 07:08:22 +0000 (GMT) (envelope-from pinoyskull@gmail.com) Received: by wx-out-0506.google.com with SMTP id i27so153160wxd for ; Wed, 20 Sep 2006 00:08:22 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:user-agent:mime-version:to:subject:references:in-reply-to:content-type; b=kcNdSWzW7lnCo+4+4LnOA9SVIMsf6LaHvdOfYCbolkWm0fupN/UXUTOUA3z8tUpUQmLqlI8Lf1vGlzHGjTVql22Qb47fcAPlx5XiCkldAoW+KQPtNHbzebPooWfMN1kZ6CBvubCxleORW4IclMedzNoihF20cEp1kEI6oVCULFg= Received: by 10.70.78.8 with SMTP id a8mr24096210wxb; Wed, 20 Sep 2006 00:08:22 -0700 (PDT) Received: from ?202.70.97.6? ( [202.70.97.6]) by mx.gmail.com with ESMTP id g3sm471078wra.2006.09.20.00.08.21; Wed, 20 Sep 2006 00:08:22 -0700 (PDT) Message-ID: <4510E8D5.3080401@gmail.com> Date: Wed, 20 Sep 2006 15:08:05 +0800 From: pinoyskull User-Agent: Thunderbird 1.5.0.5 (X11/20060728) MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: <450F8777.7080407@gmail.com> <20060919083955.GB87657@e-Gitt.NET> <45102E4E.80600@FreeBSD.org> <20060919141948.gxpxiuyyskc8w0k8@webmail.1command.com> <4510C99D.2010806@FreeBSD.org> In-Reply-To: <4510C99D.2010806@FreeBSD.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: bind round robin 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: Wed, 20 Sep 2006 07:08:23 -0000 Doug Barton wrote: > Chris H. wrote: > >> Greetings all, >> ... >> Quoting Doug Barton : >> >> >>> Oliver Brandmueller wrote: >>> >>>> DNS round robin is not about redundancy, the only thing you could have >>>> that way is a kind of load balancing (not the most sophisticated way, >>>> though). Whenever one of the servers fails, around half of the requests >>>> still goes there and then times out/gets conn refused or whatever the >>>> problem is. Prioritizing is not easily possible. Probably it helps if >>>> you add one of the IPs more often to the set, but I never tried that and >>>> did not read the docs on this topic, so before breaking your zone first >>>> read the specs, if this works! >>>> >>> Just replying to this bit first, in BIND it does not work to specify >>> the same IP address multiple times for the same hostname. The server >>> will collapse the duplicates into one unique entry when it reads the >>> zone. I am not aware of any other authoritative name server for which >>> this would work either. >>> >> While this /might/ hold true in some/certain situations. >> > > Under the circumstances that Oliver suggested, what I said holds true > in every situation (assuming you are using BIND). The example you > pasted, while colorful, is not actually an example of what Oliver > suggested. If you would like me to write out an example I will, but: > A) This subject is already off topic, and > B) It would more usefully be left as an exercise for the reader. > > >> I /can/ say after 3.5 yrs. of doing exactly this, >> > > Bzzzzzzzzzzzt. See above. > > >> that it does not collapse the namespace into a single IP<-->name. >> > > It might also be useful to note here that nothing about DNS is > (automatically) bi-directional in the manner you imply here. > > I do concur with your suggestion to move this thread to a list that is > focused on DNS, however .... > > Doug > > thanks for the reply guys, although our dns server is runnung freebsd, my problem specifically is DNS, ill try posting my problem to the right mailing list, thanks again.