RE: [atn] [EXTERNAL] Re: Embedding IP information in an IPv6 address (OMNI)
"Templin (US), Fred L" <Fred.L.Templin@boeing.com> Tue, 13 October 2020 23:16 UTC
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From: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
To: 神明達哉 <jinmei@wide.ad.jp>
CC: Mark Smith <markzzzsmith@gmail.com>, Robert Moskowitz <rgm@labs.htt-consult.com>, 6man <ipv6@ietf.org>, "atn@ietf.org" <atn@ietf.org>
Subject: RE: [atn] [EXTERNAL] Re: Embedding IP information in an IPv6 address (OMNI)
Thread-Topic: [atn] [EXTERNAL] Re: Embedding IP information in an IPv6 address (OMNI)
Thread-Index: AQHWoJm1AtWogmp2iUqGT24OuvvuX6mWm5KA//+O2ZA=
Date: Tue, 13 Oct 2020 23:16:14 +0000
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References: <7af0ab36-4a6b-cb44-609c-6e81b364a01c@labs.htt-consult.com> <8009C8E3-E654-4623-BDC8-F794346C33B1@gmail.com> <026e1f94f9d646f38e6912174998b929@boeing.com> <CAO42Z2x7B3sjaV-v1Ox8Vojjv6Vcfpn58PYUOp5jj6iixJau7A@mail.gmail.com> <6c1b8260f1014b4bbcb05e618cb83aa3@boeing.com> <2d9a93ce82be4364bf9004ca94812641@boeing.com> <CAJE_bqc1YKy2ZFrq92gQkbtvq2cvx9EHYwu6rakP1LoLE8_kSw@mail.gmail.com>
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Below: > -----Original Message----- > From: 神明達哉 [mailto:jinmei@wide.ad.jp] > Sent: Tuesday, October 13, 2020 3:54 PM > To: Templin (US), Fred L <Fred.L.Templin@boeing.com> > Cc: Mark Smith <markzzzsmith@gmail.com>; Robert Moskowitz <rgm@labs.htt-consult.com>; 6man <ipv6@ietf.org>; atn@ietf.org > Subject: Re: [atn] Re: Embedding IP information in an IPv6 address (OMNI) > > At Mon, 12 Oct 2020 13:15:09 +0000, > "Templin (US), Fred L" <Fred.L.Templin@boeing.com> wrote: > > > Responding to this point again: > > > > Ø Link specific versions of link-local addresses don't and won't comply with RFC4291 and all of its ancestors, because there is nothing > that says the format of the link local address can be defined by link specific documents > > > > IPv6-over-foo documents already do place their own link-specific interpretations on > > link-local addresses. It happens in RFC2464, RFC2467, RFC2470, etc. Each of these specs > > gives its own link-specific representation of link-local addresses including a prefix > > length definition that does not appear in RFC4291. This is the way that link-locals are > > defined within the context of *that specific interface type*, and the addresses are > > not to be forwarded to other interface types. And, none of these documents say > > “updates RFC4291”. > > These three RFC don't have to update the addressing architecture RFC > (which is, currently, RFC4291) in this regard in that all of them > specify the intermediate 54 bits are zeros and the interface > identifier length being 64 bits. It's the same for other existing > link-specific RFCs I know of. > > If a new link-specific specification wants to use a non-0 value in > that 54-bit field, it will have to formerly update RFC4291 so that all > relevant RFCs are still kept consistent. That's the sense when we > revised SLAAC as described in Section 2 of RFC4862: > > interface identifier - [...] The > exact length of an interface identifier and the way it is created > is defined in a separate link-type specific document that covers > issues related to the transmission of IP over a particular link > type (e.g., [RFC2464]). Note that the address architecture > [RFC4291] also defines the length of the interface identifiers for > some set of addresses, but the two sets of definitions must be > consistent. > > We had essentially the same type of discussion about 1.5 years ago, > where the char of the relevant WG declared we can't just publish a > link-type specific doc that would become inconsistent with RFC4291: > https://mailarchive.ietf.org/arch/msg/its/-OlXR-zYgsPcAioh58RObbigSp0/ > > I don't necessarily say such a change is never possible, but if > there's a lesson from that previous discussion, it would be that it's > not as easy/trivial as you might think. What in your opinion would be easier - a) update RFC4291 to allow coding of the link-local address 54 zero bits, or b) update RFC4861 to allow routers to use site-local addresses instead of link-local? We need a good answer for this - either a) or b). The benefit of what is being proposed by OMNI is too great to simply say no to both. Thanks - Fred > -- > JINMEI, Tatuya
- Embedding IP information in an IPv6 address (OMNI) Templin (US), Fred L
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: [atn] Embedding IP information in an IPv6 add… Robert Moskowitz
- Re: [atn] Embedding IP information in an IPv6 add… Templin (US), Fred L
- Re: [atn] Embedding IP information in an IPv6 add… Fred Baker
- RE: [EXTERNAL] Re: [atn] Embedding IP information… Templin (US), Fred L
- Re: [EXTERNAL] Re: [atn] Embedding IP information… Mark Smith
- RE: [EXTERNAL] Re: [atn] Embedding IP information… Templin (US), Fred L
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [EXTERNAL] Re: [atn] Embedding IP information… Mark Smith
- RE: [EXTERNAL] Re: [atn] Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… 神明達哉
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… Bob Hinden
- Re: [atn] [EXTERNAL] Re: Embedding IP information… otroan
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [EXTERNAL] Re: [atn] Embedding IP information… Fernando Gont
- Re: Embedding IP information in an IPv6 address (… Fernando Gont
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… otroan
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… 神明達哉
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: [EXTERNAL] Re: Embedding IP information in an… Philip Homburg
- Re: [EXTERNAL] Re: Embedding IP information in an… Alexandre Petrescu
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… Philip Homburg
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… otroan
- RE: [atn] [EXTERNAL] Re: Embedding IP information… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… otroan
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: [EXTERNAL] Embedding IP information in an IPv… Bob Hinden
- RE: [EXTERNAL] Embedding IP information in an IPv… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Re: Embedding IP information… Philip Homburg
- Re: Embedding IP information in an IPv6 address (… Behcet Sarikaya
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Ted Hardie
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: [EXTERNAL] Re: Embedding IP information in an… Ole Troan
- RE: [EXTERNAL] Re: Embedding IP information in an… Manfredi (US), Albert E
- Re: [EXTERNAL] Embedding IP information in an IPv… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- RE: [atn] [EXTERNAL] Embedding IP information in … Templin (US), Fred L
- Re: [atn] [EXTERNAL] Embedding IP information in … Bob Hinden
- RE: [atn] [EXTERNAL] Embedding IP information in … Templin (US), Fred L
- RE: [atn] [EXTERNAL] Embedding IP information in … Vasilenko Eduard
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: [atn] [EXTERNAL] Embedding IP information in … Bob Hinden
- Re: Starlink --- "simpler than IPv6" Templin (US), Fred L
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Templin (US), Fred L
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Bob Hinden
- RE: Starlink --- "simpler than IPv6" Templin (US), Fred L
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: [atn] Embedding IP information in an IPv6 add… Michael Richardson
- RE: Embedding IP information in an IPv6 address (… Templin (US), Fred L
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Templin (US), Fred L
- Re: Embedding IP information in an IPv6 address (… Philip Homburg
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- RE: [EXTERNAL] Re: Starlink --- "simpler than IPv… Templin (US), Fred L
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Bob Hinden
- Re: [atn] Embedding IP information in an IPv6 add… Bob Hinden
- Re: Embedding IP information in an IPv6 address (… Michael Richardson
- RE: [EXTERNAL] Re: [atn] Embedding IP information… Templin (US), Fred L
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: [EXTERNAL] Re: Embedding IP information in an… Philip Homburg
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- RE: [EXTERNAL] Re: Embedding IP information in an… Templin (US), Fred L
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Bob Hinden
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu
- Re: Starlink --- "simpler than IPv6" Bob Hinden
- Re: [EXTERNAL] Embedding IP information in an IPv… Bob Hinden
- Re: Starlink --- "simpler than IPv6" Behcet Sarikaya
- Re: Starlink --- "simpler than IPv6" Bob Hinden
- Re: Starlink --- "simpler than IPv6" Alexandre Petrescu