Return-Path: X-Original-To: dnsop@ietfa.amsl.com Delivered-To: dnsop@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7366D1294D7 for ; Wed, 7 Nov 2018 14:35:56 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.901 X-Spam-Level: X-Spam-Status: No, score=-6.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jv9IUBv6vofI for ; Wed, 7 Nov 2018 14:35:54 -0800 (PST) Received: from mx.pao1.isc.org (mx.pao1.isc.org [IPv6:2001:4f8:0:2::2b]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 88AE91271FF for ; Wed, 7 Nov 2018 14:35:54 -0800 (PST) Received: from zmx1.isc.org (zmx1.isc.org [149.20.0.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx.pao1.isc.org (Postfix) with ESMTPS id E7DD93AB28B; Wed, 7 Nov 2018 22:33:52 +0000 (UTC) Received: from zmx1.isc.org (localhost [127.0.0.1]) by zmx1.isc.org (Postfix) with ESMTPS id D47D1160099; Wed, 7 Nov 2018 22:33:52 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by zmx1.isc.org (Postfix) with ESMTP id C0EF5160098; Wed, 7 Nov 2018 22:33:52 +0000 (UTC) Received: from zmx1.isc.org ([127.0.0.1]) by localhost (zmx1.isc.org [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id dJQbeAfhTT1p; Wed, 7 Nov 2018 22:33:52 +0000 (UTC) Received: from [172.30.42.67] (c27-253-115-14.carlnfd2.nsw.optusnet.com.au [27.253.115.14]) by zmx1.isc.org (Postfix) with ESMTPSA id 7AD07160052; Wed, 7 Nov 2018 22:33:50 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Mark Andrews In-Reply-To: <5BE329C8.8060101@redbarn.org> Date: Thu, 8 Nov 2018 09:33:47 +1100 Cc: Tony Finch , Matthew Pounsett , dnsop Content-Transfer-Encoding: quoted-printable Message-Id: <3F763222-22E6-460D-90E4-8F9C55B5580F@isc.org> References: <20181102121108.GE12840@besserwisser.org> <20181102211625.GB20885@besserwisser.org> <20181102214114.GA92689@isc.org> <5eb5e946-88e7-59f2-1a7d-1eec3e606b9b@nic.cz> <5BE329C8.8060101@redbarn.org> To: Paul Vixie X-Mailer: Apple Mail (2.3445.9.1) Archived-At: Subject: Re: [DNSOP] Any website publishers who use CDNs on the list? X-BeenThere: dnsop@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: IETF DNSOP WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Nov 2018 22:35:56 -0000 > On 8 Nov 2018, at 5:07 am, Paul Vixie wrote: >=20 >=20 >=20 > Tony Finch wrote: >> ... >>=20 >> And even if you can get the recursive server addresses, you should = still >> go through the name service switch to deal with names that aren't in = the >> DNS. >=20 > agreed. For A and AAAA, but not for HTTP, SRV and all the rest as there are no = alternative data sources for those values. >> The custom DNS stub resolvers that I know about (adns, ldns, = libevent) >> reimplement the libc resolver, with their own parsers for = /etc/resolv.conf >> and all the rest. >=20 > dns requests should almost universally go out via the open source = "getdns" API (https://getdnsapi.net/) at this point. if your code uses = one of the above methods, or getXbyY() in any form, please investigate. It really doesn=E2=80=99t matter which API you decide to use to lookup = HTTP or SRV. They all get the same data. > --=20 > P Vixie >=20 > _______________________________________________ > DNSOP mailing list > DNSOP@ietf.org > https://www.ietf.org/mailman/listinfo/dnsop --=20 Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org