From nobody Thu Sep 17 07:43:51 2015 Return-Path: X-Original-To: dbound@ietfa.amsl.com Delivered-To: dbound@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 653AE1A6EF2 for ; Thu, 17 Sep 2015 07:43:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham 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 ULSbz35NIaXl for ; Thu, 17 Sep 2015 07:43:49 -0700 (PDT) Received: from mx2.yitter.info (mx2.yitter.info [IPv6:2600:3c03::f03c:91ff:fedf:cfab]) by ietfa.amsl.com (Postfix) with ESMTP id ED1441A6EE8 for ; Thu, 17 Sep 2015 07:43:48 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mx2.yitter.info (Postfix) with ESMTP id 84008106C6 for ; Thu, 17 Sep 2015 14:43:48 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at crankycanuck.ca Received: from mx2.yitter.info ([127.0.0.1]) by localhost (mx2.yitter.info [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id djaaf8mHFohh for ; Thu, 17 Sep 2015 14:43:47 +0000 (UTC) Received: from mx2.yitter.info (c-73-142-68-92.hsd1.nh.comcast.net [73.142.68.92]) by mx2.yitter.info (Postfix) with ESMTPSA id 5C5C0106C7 for ; Thu, 17 Sep 2015 14:43:47 +0000 (UTC) Date: Thu, 17 Sep 2015 10:43:45 -0400 From: Andrew Sullivan To: dbound@ietf.org Message-ID: <20150917144345.GI55043@mx2.yitter.info> References: <20150721082206.4688da2e@casual> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Archived-At: Subject: Re: [dbound] Started on a glossary of terms for dbound X-BeenThere: dbound@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DNS tree bounds List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2015 14:43:50 -0000 On Tue, Jul 21, 2015 at 05:22:43AM -0400, Casey Deccio wrote: > How about if I turn the statement into a statement? > > Versatility for use by various applications of different types (e.g., > browser, library, mail server) on different computing platforms (e.g., > laptop, phone, embedded OS) in different network environments (e.g., > online, offline, private network, dial-on-demand), etc? That seems to me to be two dimensions. One is platform utility, and the other is networking context utility. Does that help? A -- Andrew Sullivan ajs@anvilwalrusden.com From nobody Thu Sep 17 07:45:26 2015 Return-Path: X-Original-To: dbound@ietfa.amsl.com Delivered-To: dbound@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C9A5A1A6F6F for ; Thu, 17 Sep 2015 07:45:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.378 X-Spam-Level: X-Spam-Status: No, score=-1.378 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FM_FORGED_GMAIL=0.622, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=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 QPmaaK1d7ohy for ; Thu, 17 Sep 2015 07:45:25 -0700 (PDT) Received: from mail-ig0-x22c.google.com (mail-ig0-x22c.google.com [IPv6:2607:f8b0:4001:c05::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 931EE1A6F92 for ; Thu, 17 Sep 2015 07:45:24 -0700 (PDT) Received: by igcpb10 with SMTP id pb10so14067446igc.1 for ; Thu, 17 Sep 2015 07:45:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=deccio.net; s=google; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=wKOTa+iREgP8o3lRxl9a70nlJahcsghPVK7unP/vtGs=; b=WRIHXmPvSNUYt1mWgP7UQ/Z3h/p0iYpj9cY0Y7ExEuzxzSvVqNpIDoknPbdDRdgCkI HHps6JbntGsC2Tss3eHcSvaCMWkcrLbZPBz+Jj6pbGBE1lXBfW38M5uK3EaejQDrBn0z WzphTKPiisHQltBIFraM+3nBeNxXgeFojqLKg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=wKOTa+iREgP8o3lRxl9a70nlJahcsghPVK7unP/vtGs=; b=Y8L5QOgRZoNXflKosUeP3f4D/oHnen9co2Buohkj4R1FhlqlNRATleBJy5MjGT7fkQ z18vd4bTkvnyGnEKQnNSo+2xgBqgyHOhndRJp3P0oM3rUcHGz/+Oeudzkvp1tUeWirbb /lucSctpN4eyRVpiSodT//s89uYlhDXA4euwqY/XhNHhvT5C5srXl/TNS9tkJVn3Jv0Q Xti1ffYNiBlpoTHuudvW+NMccyj24zgPu96eEleoT+frh7ZwIoRL9JHVzAADAlYhRfwn DVpggpSY50vvZUujUJTdYa/QXbKsQQ7RVWYI8Rj+nAgzHNt47VYLXylUMgASxUWlTL+R 1fTQ== X-Gm-Message-State: ALoCoQkgo1CxKDLbnFAYqxHXdyZ8wwjRzyrGZ/TvOs2aLS1mwGo9sTym6DkYQvUTZ9ky7S5SxRbN MIME-Version: 1.0 X-Received: by 10.50.72.75 with SMTP id b11mr2846513igv.10.1442501123981; Thu, 17 Sep 2015 07:45:23 -0700 (PDT) Received: by 10.50.159.230 with HTTP; Thu, 17 Sep 2015 07:45:23 -0700 (PDT) In-Reply-To: <20150917144345.GI55043@mx2.yitter.info> References: <20150721082206.4688da2e@casual> <20150917144345.GI55043@mx2.yitter.info> Date: Thu, 17 Sep 2015 10:45:23 -0400 Message-ID: From: Casey Deccio To: Andrew Sullivan Content-Type: multipart/alternative; boundary=047d7bdc09f4156077051ff2774b Archived-At: Cc: "dbound@ietf.org" Subject: Re: [dbound] Started on a glossary of terms for dbound X-BeenThere: dbound@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DNS tree bounds List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2015 14:45:26 -0000 --047d7bdc09f4156077051ff2774b Content-Type: text/plain; charset=UTF-8 On Thu, Sep 17, 2015 at 10:43 AM, Andrew Sullivan wrote: > On Tue, Jul 21, 2015 at 05:22:43AM -0400, Casey Deccio wrote: > > How about if I turn the statement into a statement? > > > > Versatility for use by various applications of different types (e.g., > > browser, library, mail server) on different computing platforms (e.g., > > laptop, phone, embedded OS) in different network environments (e.g., > > online, offline, private network, dial-on-demand), etc? > > That seems to me to be two dimensions. One is platform utility, and > the other is networking context utility. Does that help? As long as it's all captured, it works for me. Casey --047d7bdc09f4156077051ff2774b Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Thu, Sep 17, 2015 at 10:43 AM, Andrew Sullivan <a= js@anvilwalrusden.com> wrote:
<= div class=3D"gmail_quote">
O= n Tue, Jul 21, 2015 at 05:22:43AM -0400, Casey Deccio wrote:
> How about if I turn the statement into a statement?
>
> Versatility for use by various applications of different types (e.g.,<= br> > browser, library, mail server) on different computing platforms (e.g.,=
> laptop, phone, embedded OS) in different network environments (e.g., > online, offline, private network, dial-on-demand), etc?

That seems to me to be two dimensions.=C2=A0 One is platform utility= , and
the other is networking context utility.=C2=A0 Does that help?
=

As long as it's all captured, it works for me.
<= br>
Casey
--047d7bdc09f4156077051ff2774b-- From nobody Tue Sep 29 02:06:33 2015 Return-Path: X-Original-To: dbound@ietfa.amsl.com Delivered-To: dbound@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5D3AE1A6FDA for ; Tue, 29 Sep 2015 02:06:32 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.611 X-Spam-Level: X-Spam-Status: No, score=-2.611 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham 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 Zv8Mv38RHvM6 for ; Tue, 29 Sep 2015 02:06:30 -0700 (PDT) Received: from cnnic.cn (smtp13.cnnic.cn [218.241.118.13]) by ietfa.amsl.com (Postfix) with ESMTP id ABEC21A6FC0 for ; Tue, 29 Sep 2015 02:06:29 -0700 (PDT) Received: from yaojiankang (unknown [218.241.103.4]) by ocmail02.zx.nicx.cn (Coremail) with SMTP id AQAAf0A5QDiPVApWJXtoAQ--.3993S2; Tue, 29 Sep 2015 17:06:23 +0800 (CST) Date: Tue, 29 Sep 2015 17:06:23 +0800 From: "Jiankang Yao" To: dbound X-Priority: 3 X-Has-Attach: no X-Mailer: Foxmail 7.0.1.92[cn] Mime-Version: 1.0 Message-ID: <2015092917052161861514@cnnic.cn> Content-Type: multipart/alternative; boundary="----=_001_NextPart755725208604_=----" X-CM-TRANSID: AQAAf0A5QDiPVApWJXtoAQ--.3993S2 X-Coremail-Antispam: 1UD129KBjvJXoW7AryrWF4xWFy5JrW5Kw1xZrb_yoW8GF43pa nFgaySgws3X3yIk395Jr1rXF18A3yYqa4IqF1DJr4jqrWYqa4Utw4UKw4j934UZ3W8CFWq qF1Ikrnagw15ZrJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUvEb7Iv0xC_Cr1lb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rw A2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xII jxv20xvEc7CjxVAFwI0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I 8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVCF0I0E 4I0vr24lYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4 IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACY4xI67k04243AVAKzVAKj4xxMxkIecxE wVAFwVW8uwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F4 0E14v26r106r1rMI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jr0_Jryl IxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxV AFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6rW3Jr0E3s1lIxAIcVC2z280aVAFwI0_ Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8Jr1l6VACY4xI67k04243AbIYCTnIWI evJa73UjIFyTuYvjxU4ubyDUUUU X-CM-SenderInfo: x1dryyw6fq0xffof0/ Archived-At: Subject: [dbound] Fw: New Version Notification for draft-yao-dbound-dns-solution-00.txt X-BeenThere: dbound@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: yaojk List-Id: DNS tree bounds List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2015 09:06:32 -0000 This is a multi-part message in MIME format. ------=_001_NextPart755725208604_=---- Content-Type: text/plain; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Dear all,
 
       I submit a draft about dbound=20 solution.
       any comments are welcome.
 
     thanks a lot.
Jiankang Yao
 
From: internet-drafts
Date: 2015-09-28 16:26
To: XiaoDong Lee; Jiankang Yao; Xiaodong Li; Jiankang Yao; Ning Kong; Ning=20 Kong
Subject: New Version Notification for=20 draft-yao-dbound-dns-solution-00.txt
 
A new version of I-D, draft-yao-dbound-dns-s= olution-00.txt
has been successfully submitted by Jiankang&= nbsp;Yao and posted to the
IETF repository.
 
Name: draft-yao-dbound-dns-solution
Revision: 00
Title:=20 Resource Record for DNS Administrative Boundaries=
Document date: 2015-09-28
Group: Individual Submission
Pages: 11
URL:           = ; https://www.ietf.org/internet-drafts/draft-yao-dbound-dns-solution-= 00.txt
Status:         https://= datatracker.ietf.org/doc/draft-yao-dbound-dns-solution/
Htmlized:       https://tools.ietf= .org/html/draft-yao-dbound-dns-solution-00
 
 
Abstract:
   Two DNS names may have the=  same DNS administrative boundaries for
   some services.  This document&n= bsp;adds the function of lookup of domain
   name administrative boundary to = ;domain name system, which describes a
   new method for using dbound&nbs= p;resource record for judging domain name
   administrative boundaries.
 
           &nb= sp;            = ;            &= nbsp;           &nb= sp;            = ;            &= nbsp;        
 
 
Please note that it may take a cou= ple of minutes from the time of submiss= ion
until the htmlized version and diff are=  available at tools.ietf.org.
 
The IETF Secretariat
 
------=_001_NextPart755725208604_=------ From nobody Tue Sep 29 12:25:45 2015 Return-Path: X-Original-To: dbound@ietfa.amsl.com Delivered-To: dbound@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A07EE1B2B81 for ; Tue, 29 Sep 2015 12:25:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.3 X-Spam-Level: X-Spam-Status: No, score=-1.3 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_37=0.6] autolearn=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 nU0NQK2PdWtu for ; Tue, 29 Sep 2015 12:25:38 -0700 (PDT) Received: from che.mayfirst.org (che.mayfirst.org [209.234.253.108]) by ietfa.amsl.com (Postfix) with ESMTP id 092441B2B7C for ; Tue, 29 Sep 2015 12:25:38 -0700 (PDT) Received: from fifthhorseman.net (unknown [38.109.115.130]) by che.mayfirst.org (Postfix) with ESMTPSA id 6DA2BF984; Tue, 29 Sep 2015 15:25:35 -0400 (EDT) Received: by fifthhorseman.net (Postfix, from userid 1000) id 588D61FF75; Tue, 29 Sep 2015 15:25:07 -0400 (EDT) From: Daniel Kahn Gillmor To: yaojk , dbound In-Reply-To: <2015092917052161861514@cnnic.cn> References: <2015092917052161861514@cnnic.cn> User-Agent: Notmuch/0.20.2 (http://notmuchmail.org) Emacs/24.5.1 (x86_64-pc-linux-gnu) Date: Tue, 29 Sep 2015 15:25:07 -0400 Message-ID: <877fn9xc30.fsf@alice.fifthhorseman.net> MIME-Version: 1.0 Content-Type: text/plain Archived-At: Subject: Re: [dbound] Fw: New Version Notification for draft-yao-dbound-dns-solution-00.txt X-BeenThere: dbound@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DNS tree bounds List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2015 19:25:39 -0000 On Tue 2015-09-29 05:06:23 -0400, Jiankang Yao wrote: > I submit a draft about dbound solution. > any comments are welcome. [...] > Name: draft-yao-dbound-dns-solution > Revision: 00 > Title: Resource Record for DNS Administrative Boundaries > Document date: 2015-09-28 > Group: Individual Submission > Pages: 11 > URL: https://www.ietf.org/internet-drafts/draft-yao-dbound-dns-solution-00.txt > Status: https://datatracker.ietf.org/doc/draft-yao-dbound-dns-solution/ > Htmlized: https://tools.ietf.org/html/draft-yao-dbound-dns-solution-00 Thanks for working on this! I did a quick read of this draft, and i think i am confused by it. :( I have three main confusions that i would try to clear up before thinking more deeply about the draft: Ancestry vs. Policy ------------------- This draft proposes a single mechanism that can work for zones scoped by both ancestry and policy. It's not clear that the same mechanism should be used for both of these distinctions. furthermore, your ancestry mechanism appear to only support bilateral policy agreements -- A must point to B and B must point to A. The usual ancestral relationships are that foo.bar.example and qux.bar.example both use bar.example as their administrative boundary. The proposal here, even if i'm misunderstanding the part that appears to require bilateral policy, at least requires an a DBOUND RR for each DNS record looked up. This would massively inflate the size of most zones. A decision based on ancestry might be much easier to find with simple up-walking approach: for foo.bar.example, look for a DBOUND record for foo.bar.example, then if that's NXDOMAIN, look for bar.example. The consensus i heard in the room in Prague was that trying to solve both ancestry and policy relationships with the same mechanism smells overly complex. Maybe it would be better to start with a proposal that handles only one of them? Target Names: URL vs other DNS label? ------------------------------------- The URL approach seems very underspecified. What sort of URLs should be retrievable by an implementation? what should an implementation do with the retrieved data? I think it would be better to just think about stating the existence of some type of policy boundary in the DNS, without trying to spec out the structure of all possible policies that could have boundaries in the DNS. Expirations vs. DNS TTL (and RRSIG) ---------------------------------- DNS records already have a TTL (and DNSSEC records have the inception/expiration of the RRSIG). This draft introduces new additional inception/expiration timestamps. how do all these timestamps interact with one another? Other smaller notes from my read-through ---------------------------------------- * the correct URL for the canonical web view of the PSL these days is probably: https://github.com/publicsuffix/list/blob/master/public_suffix_list.dat * IANA considerations include "Dbound Public Service" -- it's not clear how this relates to the rest of the draft * IANA considerations would probably need a registry of acceptable values for the Flag and Relation fields, or you should replace those fields with bits drawn from a bitmask. * section 4 describes "Relation" as "reserved for future use", but also describes more than one value. These seem incompatible. * It's unclear how the variable-length service type field is delimited from the later fields of the record. * RFC 2119 language in section 5 seems wrong -- these SHOULDs do not apply to actions taken by implementations. All the best, --dkg From nobody Tue Sep 29 12:55:43 2015 Return-Path: X-Original-To: dbound@ietfa.amsl.com Delivered-To: dbound@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5FFE81B4E53 for ; Tue, 29 Sep 2015 12:55:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.663 X-Spam-Level: * X-Spam-Status: No, score=1.663 tagged_above=-999 required=5 tests=[BAYES_50=0.8, HELO_MISMATCH_COM=0.553, HOST_MISMATCH_NET=0.311, SPF_PASS=-0.001] autolearn=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 M5Wud6fARf7w for ; Tue, 29 Sep 2015 12:55:40 -0700 (PDT) Received: from miucha.iecc.com (abusenet-1-pt.tunnel.tserv4.nyc4.ipv6.he.net [IPv6:2001:470:1f06:1126::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6D87D1B4E51 for ; Tue, 29 Sep 2015 12:55:40 -0700 (PDT) Received: (qmail 2085 invoked from network); 29 Sep 2015 19:55:37 -0000 Received: from unknown (64.57.183.18) by mail1.iecc.com with QMQP; 29 Sep 2015 19:55:37 -0000 Date: 29 Sep 2015 19:55:14 -0000 Message-ID: <20150929195514.14378.qmail@ary.lan> From: "John Levine" To: dbound@ietf.org In-Reply-To: <2015092917052161861514@cnnic.cn> Organization: X-Headerized: yes Mime-Version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Archived-At: Cc: yaojk@cnnic.cn Subject: Re: [dbound] Fw: New Version Notification for draft-yao-dbound-dns-solution-00.txt X-BeenThere: dbound@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DNS tree bounds List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2015 19:55:41 -0000 > I submit a draft about dbound solution. This looks similar to the SOPA record that Andrew Sullivan proposed about a year ago. If I want to say, "all names under example.com are under the same authority", how do I do that? Do I have to put a DBOUND record at every name that exists at and below example.com? R's, John