IETF Logo Mail Archive

Re: [quicwg/base-drafts] Specify IPv6 flow label for QUIC (#2348)

Christian Huitema <notifications@github.com> Mon, 21 January 2019 10:34 UTC

Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4EED1130EF7 for <quic-issues@ietfa.amsl.com>; Mon, 21 Jan 2019 02:34:52 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -12.552
X-Spam-Level:
X-Spam-Status: No, score=-12.552 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-4.553, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_IMAGE_ONLY_32=0.001, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
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 4OMi7bQL7Sje for <quic-issues@ietfa.amsl.com>; Mon, 21 Jan 2019 02:34:49 -0800 (PST)
Received: from out-5.smtp.github.com (out-5.smtp.github.com [192.30.252.196]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9327E131012 for <quic-issues@ietf.org>; Mon, 21 Jan 2019 02:34:49 -0800 (PST)
Date: Mon, 21 Jan 2019 02:34:48 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1548066888; bh=uhb6aIZmGcDLyfmB52WYqv449AHzVQLfYr4XEzzYyKA=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=Jx6ZgGSx7npUo+6MUnpNHcSebfRvE3dwxMXH0HTDYvIOoTxC9hP/1hEi8K9UCkTne MlId3G6lzEd76gLMTezP2jsRRdzvQV7sXjwgTEPeD92OS8J3ZMwWi5AfpSSQjJ+JEL FE7Hd3rJoEoxd6oAeZWlvd+Ud2RkWSX1RjuIjcqs=
From: Christian Huitema <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4abf170565595e92020175a15fdfc5abedfad0e2f4c92cf00000001185d624892a169ce17e0dd5b@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/issues/2348/456026290@github.com>
In-Reply-To: <quicwg/base-drafts/issues/2348@github.com>
References: <quicwg/base-drafts/issues/2348@github.com>
Subject: Re: [quicwg/base-drafts] Specify IPv6 flow label for QUIC (#2348)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5c45a0487850b_34363fb6f88d45c08551c9"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: huitema
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/RFbM0BGA5_p3Fcjdx36qZ6c2_aw>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 21 Jan 2019 10:34:58 -0000

I have been thinking about linkability, but I don't think that's actually an issue. Assume that we set:
```
flow_label = F(dest_address, dest_port, DCID, per_node_seed)
```
This does not volunteer any information that is not in the packet already. In particular, if the DCID changes, so does the label. The only concern is if there is no DCID (L=0) and the packet traverses a NAT. In that case, the flow label could survive, which could be useful for tracking. But then, in theory, there are no NAT in IPv6...

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/issues/2348#issuecomment-456026290

v2.23.0 | Report a Bug | By Email