RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME
"Peter Barany" <pbarany@nortelnetworks.com> Wed, 08 January 2003 17:27 UTC
Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA26901 for <avt-archive@odin.ietf.org>; Wed, 8 Jan 2003 12:27:18 -0500 (EST)
Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h08HcZo06563 for avt-archive@odin.ietf.org; Wed, 8 Jan 2003 12:38:35 -0500
Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h08HY3J05715; Wed, 8 Jan 2003 12:34:03 -0500
Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h08HWQJ05637 for <avt@optimus.ietf.org>; Wed, 8 Jan 2003 12:32:26 -0500
Received: from zsc3s004.nortelnetworks.com (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA26246 for <avt@ietf.org>; Wed, 8 Jan 2003 12:20:36 -0500 (EST)
Received: from zrc2s0jx.nortelnetworks.com (zrc2s0jx.nortelnetworks.com [47.103.122.112]) by zsc3s004.nortelnetworks.com (Switch-2.2.0/Switch-2.2.0) with ESMTP id h08HNm621760; Wed, 8 Jan 2003 09:23:48 -0800 (PST)
Received: from zrc2c011.us.nortel.com (zrc2c011.us.nortel.com [47.103.120.51]) by zrc2s0jx.nortelnetworks.com (Switch-2.2.0/Switch-2.2.0) with ESMTP id h08HO0d02106; Wed, 8 Jan 2003 11:24:00 -0600 (CST)
Received: by zrc2c011.us.nortel.com with Internet Mail Service (5.5.2653.19) id <C2QDXFCF>; Wed, 8 Jan 2003 11:23:47 -0600
Message-ID: <1B54FA3A2709D51195C800508BF9386A080B36AB@zrc2c000.us.nortel.com>
From: Peter Barany <pbarany@nortelnetworks.com>
To: 'Colin Perkins' <csp@isi.edu>
Cc: Stephen Casner <casner@acm.org>, AVT WG <avt@ietf.org>
Subject: RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME
Date: Wed, 08 Jan 2003 11:23:40 -0600
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2653.19)
Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C2B73A.B00AD000"
Sender: avt-admin@ietf.org
Errors-To: avt-admin@ietf.org
X-BeenThere: avt@ietf.org
X-Mailman-Version: 2.0.12
Precedence: bulk
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=unsubscribe>
List-Id: Audio/Video Transport Working Group <avt.ietf.org>
List-Post: <mailto:avt@ietf.org>
List-Help: <mailto:avt-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=subscribe>
Colin, Regarding ::10.0.0.1, I believe this is a valid representation of an IPv4 compatible address. However, let me take another stab at amending the text below to account for this an additional rules (e.g.., there are 3 forms for representing IPv6 addresses as text strings). Another way around this would be to refer to the appropriate IETF IPv6 WG document in order to account for all of the variations/rules. What do you think? NOTE: RFC 2373 (which is a Proposed Standard) has been advanced to Draft Standard (draft-ietf-ipngwg-addr-arch-v3-11.txt), approved for publication on Oct. 29, 2002 (RFC #?). Regards, Pete New text below (this should fix/account for everything): >> For example, the standard ASCII >> representation of an IP Version 4 address is "dotted decimal", also >> known as dotted quad, and for IP Version 6, the preferred method for >> representing addresses textually is as eight groups of four hexadecimal >> digits separated by colons, where (1) it is not necessary to write the >> leading zeros in an individual field; (2) a contiguous sequence of 16-bit >> blocks set to "0" in the colon hexadecimal format can be compressed to "::" >> ("::" can only appear once in an address); (3) in a mixed environment of >> IPv4 and IPv6 nodes, an alternative method for textually representing IP Version 6 >> addresses is as six groups of four hexadecimal digits separated by colons >> for the six high-order 16-bit pieces of the address and "dotted decimal" >> for the four low-order 8-bit pieces of the address (standard IPv4 representation). -----Original Message----- From: Colin Perkins [mailto:csp@isi.edu] Sent: Wednesday, January 08, 2003 10:15 AM To: Barany, Peter [RICH1:2H16:EXCH] Cc: Stephen Casner; AVT WG Subject: Re: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Pete, --> "Peter Barany" writes: >Agreed. Perhaps the clarification below will address your concern: > >> For example, the standard ASCII >> representation of an IP Version 4 address is "dotted decimal", also >> known as dotted quad, and for IP Version 6, addresses are textually >> represented as eight groups of four hexadecimal digits separated by >> colons, where a contiguous sequence of 16-bit blocks set to "0" in the >> colon hexadecimal format can be compressed to "::" (this zero compression >> can only be used to compress a single contiguous sequence of 16-bit blocks >> within an IP Version 6 address). Definitely better. Is the ::10.0.0.1 form of IPv6 address still legal though? Colin
- [AVT] RTP: IPv6 examples for RTCP SDES CNAME Stephen Casner
- Re: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Colin Perkins
- Re: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Jonathan Rosenberg
- RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Peter Barany
- RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Peter Barany
- Re: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Colin Perkins
- RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Peter Barany
- Re: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Colin Perkins
- RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Stephen Casner
- RE: [AVT] RTP: IPv6 examples for RTCP SDES CNAME Peter Barany