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Re: [Int-area] Call for adoption of draft-pignataro-intarea-gre-ipv6-01

Ronald Bonica <rbonica@juniper.net> Mon, 08 December 2014 23:15 UTC

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From: Ronald Bonica <rbonica@juniper.net>
To: "Templin, Fred L" <Fred.L.Templin@boeing.com>, "int-area@ietf.org" <int-area@ietf.org>
Thread-Topic: [Int-area] Call for adoption of draft-pignataro-intarea-gre-ipv6-01
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Date: Mon, 08 Dec 2014 23:15:28 +0000
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Archived-At: http://mailarchive.ietf.org/arch/msg/int-area/mjkBk-KkF5R2fDYIFsy-MiMWm0E
Subject: Re: [Int-area] Call for adoption of draft-pignataro-intarea-gre-ipv6-01
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Fred,

Suresh points out that Section 4.1.1 of RFC 2473 may provide a reasonable use case. So, I will remove the text regarding destination options.

                                                                                   Ron


> >
> > > > [RPB]
> > > > Could you describe a use case?
> > >
> > > Why? Your document says "MUST NOT include DOs (sic)", and I am
> > > saying that there is no reason for disallowing DOs when someone
> > > might want to use them. DOs are part of the IPv6 architecture, and
> > > there is no reason for GRE tunnels to exclude them.
> > >
> > [RPB]
> > I will be happy to add a sentence to the draft that says something like the
> following:
> >
> > The IPv6 deliver header MUST NOT include Destination Options because
> > the GRE ingress has nothing to say to the GRE egress beyond "de-
> encapsulate this packet and forward it to the egress".
> >
> > Now would you be willing to divulge your use case?
> 
> No, because your proposed language is silly. You have no idea what future
> uses of DOs might  apply to tunnel ingress/egress pairs, and so "MUST NOT
> include them" is a gratuitous requirement.
>

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