Dear Maoke, Please see inline.
Cheers, Med ________________________________ De : Maoke [mailto:fib...@gmail.com] Envoyé : mercredi 7 septembre 2011 15:43 À : BOUCADAIR Mohamed OLNC/NAD/TIP Objet : Re: [Softwires] Requirements for extending IPv6 addresses with port range (draft-boucadair-softwire-stateless-rfc6052-update) hi all, i'd like to commet on the interesting question after REQ#5 "Do we allow the support of multiple algorithms?". my answer is NO. intuitively, it sounds ok if we allow multiple algorithms, as long as the algorithm type is also encoded in the IPv4-embedded IPv6 address together with the port index. however, it is only applied for the case of translating an IPv4-embedded IPv6 address to IPv4. for the reverse direction, the algorithm selection might be randomly decided by the translator devices. inconsistency of port indexing algorithm violates the end-to-end transparency. coordinating algorithm selection is possible but it might must costs. [Med] I see your point and it makes sense to me. There is also an underlying question we wanted to discuss: is it acceptable for the WG to specify several algorithms (see for instance RFC6056) but only one algorithm MUST be enabled in a network. btw, it looks the reference on port indexing algorithm analysis should be ...-bsd-... rather than ...-boucadair-... ;-) [Med] Fixed. Thanks. best, maoke 2011/9/7 <mohamed.boucad...@orange-ftgroup.com<mailto:mohamed.boucad...@orange-ftgroup.com>> Dear all, We submitted a new I-D identifying the requirements to be met when designing the format of IPv4-embedded IPv6 addresses/prefixes enclosing the port information. The first list of requirements is available at: http://tools.ietf.org/html/draft-boucadair-softwire-stateless-rfc6052-update-00#section-3 Contributions, comments and suggestions on the requirements section are encouraged. Thanks. Cheers, Med -----Message d'origine----- De : i-d-announce-boun...@ietf.org<mailto:i-d-announce-boun...@ietf.org> [mailto:i-d-announce-boun...@ietf.org<mailto:i-d-announce-boun...@ietf.org>] De la part de internet-dra...@ietf.org<mailto:internet-dra...@ietf.org> Envoyé : mercredi 7 septembre 2011 13:56 À : i-d-annou...@ietf.org<mailto:i-d-annou...@ietf.org> Objet : I-D Action: draft-boucadair-softwire-stateless-rfc6052-update-00.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Embedding Port Information in IPv4-Translatable IPv6 Prefixes and IPv4- Embedded IPv6 Addresses Author(s) : Mohamed Boucadair Congxiao Bao Nejc Skoberne Xing Li Filename : draft-boucadair-softwire-stateless-rfc6052-update-00.txt Pages : 10 Date : 2011-09-07 RFC6052 specifies the algorithmic translation of an IPv6 address to a corresponding IPv4 address, and vice versa. In particular, RFC6052 specifies the address format to build IPv4-converted and IPv4- translatable IPv6 addresses. In order to be deployed in the context of stateless 4/6 solutions, RFC6052 should be updated so that IPv4- embedded IPv6 addresses convey the port information. This document identifies a set of requirements to be taken into account when updating RFC6052 for that purpose. A companion effort, document at [I-D.bsd-softwire-stateless-port-index-analysis], is required to converge on one or a set of algorithms to be used by all stateless solutions. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-boucadair-softwire-stateless-rfc6052-update-00.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-boucadair-softwire-stateless-rfc6052-update-00.txt _______________________________________________ I-D-Announce mailing list i-d-annou...@ietf.org<mailto:i-d-annou...@ietf.org> https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt _______________________________________________ Softwires mailing list Softwires@ietf.org<mailto:Softwires@ietf.org> https://www.ietf.org/mailman/listinfo/softwires -- Dr. Maoke CHEN, FreeBit Co., Ltd. 13F, 3-6 Maruyamacho, Shibuya-ku, Tokyo 150-0044 Japan Tel: +81 80 3930 1704 e-mail: m.c...@freebit.net<mailto:m.c...@freebit.net> --
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