Re: [DNSOP] I-D Action: draft-ietf-dnsop-dns-capture-format-01.txt

Jim Hague <jim@sinodun.com> Mon, 27 February 2017 18:49 UTC

Return-Path: <jim@sinodun.com>
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 B63A4129B0F for <dnsop@ietfa.amsl.com>; Mon, 27 Feb 2017 10:49:10 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.199
X-Spam-Level:
X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, URIBL_BLOCKED=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 A5KoR1JZb1y2 for <dnsop@ietfa.amsl.com>; Mon, 27 Feb 2017 10:49:09 -0800 (PST)
Received: from haggis.mythic-beasts.com (haggis.mythic-beasts.com [IPv6:2a00:1098:0:86:1000:0:2:1]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 11B0B127071 for <dnsop@ietf.org>; Mon, 27 Feb 2017 10:49:09 -0800 (PST)
Received: from [2001:470:1f09:d2::d83] (port=53946 helo=hagrid.localnet) by haggis.mythic-beasts.com with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from <jim@sinodun.com>) id 1ciQM5-0001W3-ES; Mon, 27 Feb 2017 18:49:06 +0000
From: Jim Hague <jim@sinodun.com>
To: dnsop@ietf.org
Date: Mon, 27 Feb 2017 18:48:59 +0000
Message-ID: <1649382.sfAXfZOMk1@hagrid>
Organization: Sinodun Internet Technologies Ltd
X-Face: "YyOu7Hab"VGm^bAO1; {iOPso3{hw9JL`&?c6?!@&m`z?E\ZMv; T44B_v+/9i''$IUz\h: 7+|+U\Sm3S)ajt}IU6bG#OB^ma3dQ%l4]6jGS1:=9N]LF\ZmxO!"2bQ}v@,\x?0{/mu; a, g3:!#KL>aL\D; )@?UJG=m@@vt; LJJxqV.w-.VxYKp-r1'$`0+>4D72C#o5(tax+Dp:0UWU ]+s_'{u[#cEm^9VXGTf0+#@VwB/%U?KWb~C<@19.<sDNYm2}r|
User-Agent: KMail/5.2.3 (Linux/4.9.0-1-amd64; KDE/5.28.0; x86_64; ; )
In-Reply-To: <CA+nkc8CFXF=racTrJ8XLvA9ku_3iSnR0mAxNbu2HqwKBy0kO8g@mail.gmail.com>
References: <148767700983.32635.5525058061405932673.idtracker@ietfa.amsl.com> <1E671B09-B07B-451A-B18C-B96CBEFBE03D@sinodun.com> <CA+nkc8CFXF=racTrJ8XLvA9ku_3iSnR0mAxNbu2HqwKBy0kO8g@mail.gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
X-BlackCat-Spam-Score: -28
X-Mythic-Debug: State = no_sa; Score = 50
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/4Ut6S6lSpERbJp5GbfnEb6deco8>
Cc: Bob Harold <rharolde@umich.edu>, Sara Dickinson <sara@sinodun.com>
Subject: Re: [DNSOP] I-D Action: draft-ietf-dnsop-dns-capture-format-01.txt
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.17
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: Mon, 27 Feb 2017 18:49:11 -0000

On Thursday, 23 February 2017 13:58:18 GMT Bob Harold wrote:
> Is it possible to have a case where the software does not know if
> promiscuous mode was enabled ?  If so, we should allow for an "unspecified"
> or "unknown" code for "promisc"
> 
> Perhaps a pcap to C-DNS converter would have this issue, if the pcap format
> does not include "promisc" info?

Thanks, that's a good point. Yes, it is certainly possible to not have a known 
promiscuous mode, and also of course in the case of a pcap conversion the 
interface is not known.

We're discussing the best approach to handling this; whether to have specified 
'unspecified' values, or specify that, since all config items in C-DNS are 
optional, values should only be present if definitely known.
-- 
Jim Hague
jim@sinodun.com                      Never trust a computer you can't lift.
Sinodun Internet Technologies Ltd.   +44 7941 697732