[bess] [Technical Errata Reported] RFC9252 (7817)

RFC Errata System <rfc-editor@rfc-editor.org> Tue, 20 February 2024 16:49 UTC

Return-Path: <wwwrun@rfcpa.amsl.com>
X-Original-To: bess@ietfa.amsl.com
Delivered-To: bess@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 58C92C151520 for <bess@ietfa.amsl.com>; Tue, 20 Feb 2024 08:49:06 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.659
X-Spam-Level:
X-Spam-Status: No, score=-1.659 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, GB_SUMOF=5, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=no autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ncy4EAUrh__7 for <bess@ietfa.amsl.com>; Tue, 20 Feb 2024 08:49:01 -0800 (PST)
Received: from rfcpa.amsl.com (rfcpa.amsl.com [50.223.129.200]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2D688C14F704 for <bess@ietf.org>; Tue, 20 Feb 2024 08:48:58 -0800 (PST)
Received: by rfcpa.amsl.com (Postfix, from userid 499) id EE72E18FB8AB; Tue, 20 Feb 2024 08:48:57 -0800 (PST)
To: gdawra.ietf@gmail.com, ketant.ietf@gmail.com, robert@raszuk.net, bruno.decraene@orange.com, zhuangshunwan@huawei.com, jorge.rabadan@nokia.com, aretana.ietf@gmail.com, jgs@juniper.net, andrew-ietf@liquid.tech, matthew.bocci@nokia.com, slitkows.ietf@gmail.com, zzhang@juniper.net
From: RFC Errata System <rfc-editor@rfc-editor.org>
Cc: ketant.ietf@gmail.com, bess@ietf.org, rfc-editor@rfc-editor.org
Content-Type: text/plain; charset="UTF-8"
Message-Id: <20240220164857.EE72E18FB8AB@rfcpa.amsl.com>
Date: Tue, 20 Feb 2024 08:48:57 -0800
Archived-At: <https://mailarchive.ietf.org/arch/msg/bess/QRbdssWNeCKVXolkBRd11GNJuh8>
X-Mailman-Approved-At: Tue, 20 Feb 2024 10:14:07 -0800
Subject: [bess] [Technical Errata Reported] RFC9252 (7817)
X-BeenThere: bess@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: BGP-Enabled ServiceS working group discussion list <bess.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/bess>, <mailto:bess-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/bess/>
List-Post: <mailto:bess@ietf.org>
List-Help: <mailto:bess-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/bess>, <mailto:bess-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 Feb 2024 16:49:06 -0000

The following errata report has been submitted for RFC9252,
"BGP Overlay Services Based on Segment Routing over IPv6 (SRv6)".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid7817

--------------------------------------
Type: Technical
Reported by: Ketan Talaulikar <ketant.ietf@gmail.com>

Section: 3.2.1

Original Text
-------------
   As defined in [RFC8986], the sum of the Locator Block Length (LBL),
   Locator Node Length (LNL), Function Length (FL), and Argument Length
   (AL) fields MUST be less than or equal to 128 and greater than the
   sum of Transposition Offset and Transposition Length.

Corrected Text
--------------
   As defined in [RFC8986], the sum of the Locator Block Length (LBL),
   Locator Node Length (LNL), Function Length (FL), and Argument Length
   (AL) fields MUST be less than or equal to 128 and greater than or
   equal to the sum of Transposition Offset and Transposition Length.

Notes
-----
The sum of Trans Off and Trans Length can be equal to the LBL+LNL+FL+AL when the last part of the SID (function or argument) is getting transposed.

This is clear also from the example below in the next paragraph of the same section:

   As an example, consider that the sum of the Locator Block and the
   Locator Node parts is 64.  For an SRv6 SID where the entire Function
   part of size 16 bits is transposed, the transposition offset is set
   to 64 and the transposition length is set to 16.  While for an SRv6
   SID for which the FL is 24 bits and only the lower order 20 bits are
   transposed (e.g., due to the limit of the MPLS Label field size), the
   transposition offset is set to 68 and the transposition length is set
   to 20.

Instructions:
-------------
This erratum is currently posted as "Reported". (If it is spam, it 
will be removed shortly by the RFC Production Center.) Please
use "Reply All" to discuss whether it should be verified or
rejected. When a decision is reached, the verifying party  
will log in to change the status and edit the report, if necessary.

--------------------------------------
RFC9252 (draft-ietf-bess-srv6-services-15)
--------------------------------------
Title               : BGP Overlay Services Based on Segment Routing over IPv6 (SRv6)
Publication Date    : July 2022
Author(s)           : G. Dawra, Ed., K. Talaulikar, Ed., R. Raszuk, B. Decraene, S. Zhuang, J. Rabadan
Category            : PROPOSED STANDARD
Source              : BGP Enabled ServiceS
Area                : Routing
Stream              : IETF
Verifying Party     : IESG