IETF Logo Mail Archive

Re: [DNSOP] Special-use TLDs in resolvers

Vladimír Čunát <vladimir.cunat+ietf@nic.cz> Fri, 16 August 2019 13:26 UTC

Return-Path: <vladimir.cunat+ietf@nic.cz>
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 2CE05120133 for <dnsop@ietfa.amsl.com>; Fri, 16 Aug 2019 06:26:18 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.997
X-Spam-Level:
X-Spam-Status: No, score=-6.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FROM_EXCESS_BASE64=0.001, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=nic.cz
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 SRidoQ7UPpZR for <dnsop@ietfa.amsl.com>; Fri, 16 Aug 2019 06:26:16 -0700 (PDT)
Received: from mail.nic.cz (mail.nic.cz [217.31.204.67]) (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 C36C012004A for <dnsop@ietf.org>; Fri, 16 Aug 2019 06:26:15 -0700 (PDT)
Received: from [IPv6:2001:1488:fffe:6:bf77:b9e5:aacf:6dcf] (unknown [IPv6:2001:1488:fffe:6:bf77:b9e5:aacf:6dcf]) by mail.nic.cz (Postfix) with ESMTPSA id AE630140CDE; Fri, 16 Aug 2019 15:26:13 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=nic.cz; s=default; t=1565961973; bh=1eJRHDCMBH9pMD21RY8Mz7gbsv7vjKTlCy3QRNH8+Us=; h=To:From:Date; b=MomXESFHyf6ptXE81iCJSLoO0pPB+PrJ7PEjwsYMg1phDtpqgILi3A69Mpr2R1Ccl 7nQni/lABakOwde2b5+NUPpIWrLgwN8rzAzB4N81wiCi2L5yewZdJMra7JYd2Q+rXP rzOFb309MBvS7LwmJBfS+kNwVljCavtQv/ethJ3I=
Cc: Ted Lemon <mellon@fugue.com>
References: <a6f528a1-01d0-3bd5-1a7f-96ff4e9bcd85@nic.cz> <47719B4A-2925-4C98-AA64-E74154681D6E@fugue.com>
To: dnsop@ietf.org
From: Vladimír Čunát <vladimir.cunat+ietf@nic.cz>
Openpgp: preference=signencrypt
Autocrypt: addr=vladimir.cunat+ietf@nic.cz; prefer-encrypt=mutual; keydata= mQINBFgDknYBEADHEQwLBlfqbVCzq7qYcBFFTc1WCAFtqiKehOrsITnKusZw4nhYwlKQxcum gj01xJOhbfHBCBeGlDydYqemKg4IfY2nwSyPwZZYMJn7L7AGrCeytr4VMvDJ7o7qDZjjim4i fv+GUwdk3plXx6oMF4nctesI8aAOuLUHAn0PfrGfNhWoaglOKgdOI6DGjhI/aGkvy+jrI/+X sdMV+3f1RuEOfI+Yu4SXFjJyhAmqEOBRxxdHqKreIIpz3Lg38yWwiVGfwgQT+nFIz9BpHH3l Wg1uS8xM3ezceBmRYV8zT9PvbeZ57BlaTR6rLae5RYwV397PSLBqqLkB5H0TDRUFBnwBsUob LebYHmJCOydvyNv5AFkLmLZ7O4j2jFo1WPSMt3ThM6wRwqrnB4Gi+6onyrZfE1DnVZMqbxZ3 VXa+E4S5YwrfCLUErGEn+d40OtoRZmQXhRPVAsdjimMj9oFM9RoxSgUrDg6Ia3n0IrKFb++z HAFbqkR5g4qzXiOMEG621GYEex2sDEKz/PD4CVKlNI9eld4ToH592kAwzJmd+sAi+Rfos0NE zxuFd0ekAOeWoURo0zoYTSWPlMOmFMvcpH6LP3leJmY7x4z/b1ng/+7UnKonVALVPFbRbElO kIfAtLKcUEofwV1jr7DyYGPalJtiDJPomB041ZHCj2RxyXY/oQARAQABtDBWbGFkaW3DrXIg xIx1bsOhdCAod29yaykgPHZsYWRpbWlyLmN1bmF0QG5pYy5jej6JAlQEEwEIAD4CGyMFCQlm AYAFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AWIQS2AGRgtgqA54IGJEnnR98flXWjqgUCWg3w 3gAKCRDnR98flXWjqmD6D/96U4cDZBrHQ5LhqybocZr/N2IS5Wr2SLLB4k2F5/W/wbL05gq6 Ha9/2TMqXoxRkhug+EAHFHxylPR43yN9rz0pjBXHrra87FAPHMqq/qqrOEUdhkytEqa6WIho aoEkdhaMhUyctjVjL2WZ0+MWeRjqedLQX+VCrOVPcVbLreRRhA9N3KPgNwbp9zCg6hEPi4l2 zZKedHkTNjKIAwJ0xZoMwFa1Y+vL8Em8Or+IBZuGBMP/ZMtasPOIQaT/Gvsyx1DDorwsoCdX 6zaTZy5DOWP3FIrMzus/YDbzwAYxSpWk/jF44ySbnJzdjU67EfG3UrsK+RRGw8aJqs3/4qHK ZMZZnNL+4wJpEdnZyFic/MXcw6FBszQEwrIOaM1WEfwzn2ExUYk2pM5zaBwq76OgrmGMzMEi cfMDyqLodwEQqR70PvRbkrh+R02LphwQ9c5AFXcrLjKMmeQlbQVarTUsrELcTK6rElC1ojS7 M37j0XzFE+kgNWn2fyBRgtnGDWEa7r+oDaueXJnEf0/4Ww28IwxakNc7r0N41GIBekwSxKdk epKFZgtVGGSDlFei5hb5LLWFljA1OS7CRVJKpbHafQjdPdb1vNqZAj4y2SJXvVVpI1KO5kq+ dFdYipORv0N2Iho6MNYbQUT1EBeU46G5N0viCoLS15/PxLhIAo+PzKpW97kCDQRYA5J2ARAA yHww3huLEtsdyqgjiGMhtEKOLmp7yFl450HY9oPcHS02U5BC1370ssNShrdOCi2ACDbe41Zx x85WcuaO1OVqung2umX047mj2xQsiTAFRDLZsQu8cQFoEy/DBL2bk7ThfK1Lh+NyZAs0UaPp DkGodS0De9osA+4T6Nf4POYaeavbYVFSdDKS4lUboBqApKnD/TzKFxFcpuFx6FN92lteTbOo jGMiLoZvELY86Kn9KuFZ8FM2ZSNHx1Z75KouufGrdkeCoZYVYiuzT+fnt2it4dIpIlnF+yxM t5LB/MSrmECB5CAFJtxzuMccm6yDUZQSWWi9vUgxIJwvt5w0CIBT353DGeP4WnH0r5YoBKoR bh7i4fT0lWvMXTG/V2lqyzBdClMebyHffMgba26Kj6oeDygDfC5aGsVaqw1Ue/qQ5QRqTJcJ V7xVLTtS1EamVqkfKwPS0zTfnrF1jQtnO/P4qkfgBRRG9BXGGrykHpXOyqmX6Z0wbV2P4j+p 02oSecDl5yVXplJfsXfbS/xXnaSkaN/7mCU29ul26cAVNxDkDPunztSFi9K9LM2T/XWYJQGX M71OpmONQJGF24lx7Wp/kobnHtbjGDzjDPC4eSL7MA56qtrWaLM+4ePKANct2q0q6c0uSLs0 Q2zochS64Mcg0YzL1sinWPN1rXLDk3lwpIsAEQEAAYkCJQQYAQgADwUCWAOSdgIbDAUJCWYB gAAKCRDnR98flXWjqn4yEACA0f1XBAg+WMaNPtIt0k15yFPfhdbOg9GhDcYGgvFIOxRuaFWw 9SLUt7OGuUnIpKxKRXtQJss98fHkijo70ONYWPuLhfRGK/wg9Ao6MuFw5G8m431CBS/awrie b6iPjvAARXJCPTTBZk/NC988jiKdCh8PbTCHDsl+gSDytP15QUrdqSfS2Wf4653ej7+jtuTj xZzmGgvNSi6JDlb9KNtmBQKQAgpnOQM46ItESmzHDnmdcvhPLUDsjwkpIJ6clasOzaObwxJi ba7iFPcGwcClCSwYjMNXFtneCGUnEAa5RBIx+i+LV1iqB3VRvTC6tMIUueoQ7cdTy6afNkhw QYXm4/pDmNT8UMdnzwnlTpFQ0CegDQRDWc+dIDDBHGEEEYBh2vTOE04KrmYUp1bQsNegPfvL woHib0jEvohPMJ2fJtZAd1SJElgwPbM8H7emKBiTsHwF8gL7G2jo7AoGpqYjqXkCRS0tSLTN r+qHh+7Ltrkbu/ZVTTfh4Q/qw3VaLYQh4C0tBma/YevQy1O2c3TZXXFz1QF8b9/Hj/3sq2Kg T1AcZ51E+xG+cb6cUqgkihmgm39xx24GPlNAdCRuq01+iILol+Wox6OwF6hmqx1EMSmxcmGo UREr0rkMnFVsWeAYeVoE4q689qxCPu9iCMJMJnkRe1o9oQYSN7my+S98gA==
Message-ID: <516137ad-2add-e8e3-2a40-79623fd68005@nic.cz>
Date: Fri, 16 Aug 2019 15:26:13 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0
MIME-Version: 1.0
In-Reply-To: <47719B4A-2925-4C98-AA64-E74154681D6E@fugue.com>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
Content-Language: en-US
X-Virus-Scanned: clamav-milter 0.100.3 at mail.nic.cz
X-Virus-Status: Clean
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/KNpaZdxILITKVM9ws8x2pRiAAoM>
Subject: Re: [DNSOP] Special-use TLDs in resolvers
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 16 Aug 2019 13:26:18 -0000

On 8/16/19 3:10 PM, Ted Lemon wrote:
> If you look up “onion”, you have revealed that the user is trying to
> use tOR, even if you haven’t revealed where they are going.

Well, in this particular case the tOR client would probably better not
send onion queries to DNS resolver, but generally there would be a leak,
though the TTL is a whole day.  At least unless combined with one of the
"local root" schemes (which are so far not commonly deployed, I think).

> What’s the motivation behind this proposal?

As I wrote, supplying the answer with a DNSSEC proof seems better to
me.  And it makes my camel a tiny bit happier, I guess :-)  At that
moment I didn't realize that if you forward to a resolver that does
respect that SHOULD, you will not be able to obtain the proof in this
way and consequently regress, so the change would be double-edged in
this respect.

v2.23.0 | Report a Bug | By Email