From owner-freebsd-net@FreeBSD.ORG Wed Feb 13 02:42:55 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A6F3C16A41B; Wed, 13 Feb 2008 02:42:55 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.delphij.net (delphij-pt.tunnel.tserv2.fmt.ipv6.he.net [IPv6:2001:470:1f03:2c9::2]) by mx1.freebsd.org (Postfix) with ESMTP id 4BF5313C461; Wed, 13 Feb 2008 02:42:55 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.geekcn.org (unknown [202.108.54.204]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by tarsier.delphij.net (Postfix) with ESMTP id 1A74828479; Wed, 13 Feb 2008 10:42:54 +0800 (CST) Received: from localhost (unknown [202.108.54.204]) by tarsier.geekcn.org (Postfix) with ESMTP id BAEA6EB1773; Wed, 13 Feb 2008 10:42:53 +0800 (CST) X-Virus-Scanned: amavisd-new at geekcn.org Received: from tarsier.geekcn.org ([202.108.54.204]) by localhost (mail.geekcn.org [202.108.54.204]) (amavisd-new, port 10024) with ESMTP id lb4Kf1uKRF88; Wed, 13 Feb 2008 10:42:47 +0800 (CST) Received: from charlie.delphij.net (71.5.7.139.ptr.us.xo.net [71.5.7.139]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTP id B6893EB094A; Wed, 13 Feb 2008 10:42:43 +0800 (CST) DomainKey-Signature: a=rsa-sha1; s=default; d=delphij.net; c=nofws; q=dns; h=message-id:date:from:reply-to:organization:user-agent: mime-version:to:cc:subject:references:in-reply-to: x-enigmail-version:openpgp:content-type:content-transfer-encoding; b=XexOuIX9uI5eGKgxkil/pmfEduYZ6P3eKp0LSuOxZefVvZMwnVFlO1mOLMkh2mwTp FhGvdcaU+5+LMMx3LwM4A== Message-ID: <47B2591D.4000703@delphij.net> Date: Tue, 12 Feb 2008 18:42:37 -0800 From: Xin LI Organization: The FreeBSD Project User-Agent: Thunderbird 2.0.0.9 (X11/20080122) MIME-Version: 1.0 To: Edwin Groothuis References: <47B2488D.70707@delphij.net> <20080213015144.GA3957@k7.mavetju> In-Reply-To: <20080213015144.GA3957@k7.mavetju> X-Enigmail-Version: 0.95.5 OpenPGP: id=18EDEBA0; url=http://www.delphij.net/delphij.asc Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, d@delphij.net, ume@FreeBSD.org Subject: Re: Strange resolver behavior X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: d@delphij.net List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2008 02:42:55 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Edwin Groothuis wrote: > On Tue, Feb 12, 2008 at 05:31:57PM -0800, Xin LI wrote: >> Received 127 bytes from 127.0.0.1#53 in 0 ms >> [delphij@charlie] ~> host ps_other.a.shifen.com >> ps_other.a.shifen.com has address 202.108.22.46 >> Host ps_other.a.shifen.com not found: 3(NXDOMAIN) > > 12:49:45.620015 IP 10.251.1.18.51852 > 202.108.22.102.53: 18450 MX? ps_other.a.shifen.com. (39) > 12:49:46.086227 IP 202.108.22.102.53 > 10.251.1.18.51852: 18450 NotImp*- 0/0/0 (39) > > That's the one it is complaining about, not about the hostname > itself. > > Yes, the warning/error message could be a little bit smarter. Em... That's fine I think, it does not seem to be the MX to cause the problem, though. I have tried to visit 'dict.baidu.com' in Firefox and it told me that the name can not resolve. tcpdump indicates that the server has respond the A RR but resolver still queries AAAA... Cheers, - -- Xin LI http://www.delphij.net/ FreeBSD - The Power to Serve! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHslkdi+vbBBjt66ARAl96AJwLMp5QrJyAcbx5DidtMRx1EGiQWQCgtmCi GysiPCyVFIHMnPoKNd26jlU= =x1FG -----END PGP SIGNATURE-----