Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5984)
<mohamed.boucadair@orange.com> Mon, 17 February 2020 09:43 UTC
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From: mohamed.boucadair@orange.com
To: Christian Huitema <huitema@huitema.net>, RFC Errata System <rfc-editor@rfc-editor.org>, "congxiao@cernet.edu.cn" <congxiao@cernet.edu.cn>, "huitema@microsoft.com" <huitema@microsoft.com>, "marcelo@it.uc3m.es" <marcelo@it.uc3m.es>, "mohamed.boucadair@orange-ftgroup.com" <mohamed.boucadair@orange-ftgroup.com>, "xing@cernet.edu.cn" <xing@cernet.edu.cn>, "ietf@kuehlewind.net" <ietf@kuehlewind.net>, "magnus.westerlund@ericsson.com" <magnus.westerlund@ericsson.com>, "dwing@cisco.com" <dwing@cisco.com>, "dthaler@microsoft.com" <dthaler@microsoft.com>
CC: "jordi.palet@theipv6company.com" <jordi.palet@theipv6company.com>, "behave@ietf.org" <behave@ietf.org>
Thread-Topic: [BEHAVE] [Technical Errata Reported] RFC6052 (5984)
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Date: Mon, 17 Feb 2020 09:43:14 +0000
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Subject: Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5984)
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Hi all, One further comment: the assumption we have for "stateless translation" is as follows In these deployments, internal IPv6 nodes are addressed using IPv4-translatable IPv6 addresses, which enable them to be accessed by IPv4 nodes. I don't see any issue with the current text under such assumption. Cheers, Med > -----Message d'origine----- > De : Behave [mailto:behave-bounces@ietf.org] De la part de Christian > Huitema > Envoyé : dimanche 16 février 2020 21:05 > À : RFC Errata System; congxiao@cernet.edu.cn; huitema@microsoft.com; > marcelo@it.uc3m.es; mohamed.boucadair@orange-ftgroup.com; > xing@cernet.edu.cn; ietf@kuehlewind.net; > magnus.westerlund@ericsson.com; dwing@cisco.com; dthaler@microsoft.com > Cc : jordi.palet@theipv6company.com; behave@ietf.org > Objet : Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5984) > > Jordi, > > The errata process is not the right way to handle this issue. You are > asking for a change in the specification, and such changes should go > through the working group, as part of a standard discussion. > > To go to the specific technical point: it is indeed completely doable > to > use the same /64 prefix for a local subnet and for a NAT service. The > only requirement is that the NAT be capable to distinguishing between > a > translated address and a local address, and that requirement is > implicit > in RFC6502. For example, the NAT could reserve <64bit>:dead:beef::/96 > for the 6to4 service, and use DUD to defend against hosts configuring > an > address in the same /64 prefix. That may not be a perfect solution, > but > that's something the working group should discuss, not something to be > handled summarily through the errata process. > > -- Christian Huitema > > On 2/15/2020 7:35 PM, RFC Errata System wrote: > > The following errata report has been submitted for RFC6052, > > "IPv6 Addressing of IPv4/IPv6 Translators". > > > > -------------------------------------- > > You may review the report below and at: > > https://www.rfc-editor.org/errata/eid5984 > > > > -------------------------------------- > > Type: Technical > > Reported by: Jordi Palet Martinez <jordi.palet@theipv6company.com> > > > > Section: 3.3 > > > > Original Text > > ------------- > > Organizations deploying stateless IPv4/IPv6 translation SHOULD > assign a Network-Specific Prefix to their IPv4/IPv6 translation > service. > > > > Corrected Text > > -------------- > > Organizations deploying stateless IPv4/IPv6 translation SHOULD > assign a Network-Specific Prefix for the exclusive use of their > IPv4/IPv6 translation service. > > > > Notes > > ----- > > This seems obvious but is not. The NSP must only be used for the > translation service. If the NSP is used only, for example in an > enterprise network, in the LANs, and the translator allows it, it may > create conflicts, as the resulting IPv6 address (NSP+IPv4 address) may > be the same as a host inside the LAN has been configured with (either > manually, or with SLAAC, DHCPv6), etc. > > > > It has been confirmed that at least one vendor already realized this > and the implementation doesn't work if the prefix is used both for the > translator service and one of the LANs, but there is no explicit > documentation on that. So if configured, the box doesn't work, but > doesn't report is an an "invalid" config. > > > > Instructions: > > ------------- > > This erratum is currently posted as "Reported". If necessary, please > > use "Reply All" to discuss whether it should be verified or > > rejected. When a decision is reached, the verifying party > > can log in to change the status and edit the report, if necessary. > > > > -------------------------------------- > > RFC6052 (draft-ietf-behave-address-format-10) > > -------------------------------------- > > Title : IPv6 Addressing of IPv4/IPv6 Translators > > Publication Date : October 2010 > > Author(s) : C. Bao, C. Huitema, M. Bagnulo, M. Boucadair, > X. Li > > Category : PROPOSED STANDARD > > Source : Behavior Engineering for Hindrance Avoidance > > Area : Transport > > Stream : IETF > > Verifying Party : IESG > > > > _______________________________________________ > > Behave mailing list > > Behave@ietf.org > > https://www.ietf.org/mailman/listinfo/behave > > _______________________________________________ > Behave mailing list > Behave@ietf.org > https://www.ietf.org/mailman/listinfo/behave
- [BEHAVE] [Technical Errata Reported] RFC6052 (598… RFC Errata System
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … Christian Huitema
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … mohamed.boucadair
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … Mirja Kuehlewind
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … Magnus Westerlund
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … JORDI PALET MARTINEZ
- Re: [BEHAVE] [Technical Errata Reported] RFC6052 … mohamed.boucadair