Michel,

"Michel Py" <[EMAIL PROTECTED]> writes:

> > If the consensus to deprecate them does not hold, I'm not
> > quite sure what we are going to do... We certainly don't
> > have consensus to do any further work on site-locals,

> To the contrary, I think this is the only consensus we have.

> First, this "consensus" on deprecation (if there is one which remains to
> be seen) does not exist for two big reasons:

> 1. Most of the votes were taken without knowing what it really meant.
> It's a consensus on vaporware.
> Note that this is not a criticism; Bob and you obviously had something
> else in mind and if there is something you failed it's only that you did
> not have the right inspiration when you had to improvise and that you
> allowed a few agitators in the room bully you into this vaporware
> instead of sticking to the plan.
> In the pot calling the kettle black dept. I would say that you did not
> pay enough attention to room dynamics and too much to your presentation
> :-(

I find the above unhelpful and not true. Saying the votes were taken
"without knowing what it really meant" is FUD. I was in the room and I
sure felt like I knew what was being asked.

I also went to the microphone before the question was asked to point
out that what we were talking about by deprecation was "something to
the left of the limited model". Nobody seemed to question that. I
don't think anyone can claim folks didn't know what was being
asked. To suggest otherwise is an attempt to cast FUD.

> 2. I don't see how any consensus can be reached without a detailed
> explanation about the consequences on the scoped architecture.

I think a fair number of people do feel like they understand the
consequences even if they aren't all written down in one document that
explains it all in easy to understand steps. I have certainly had long
conversations about this issue with numerous folk that I think do
understand the implications -- and it is those implications that make
people uncomfortable.

I also think that the consequences and implications are subtle and not
immediately easy to understand. I say that because it has taken a long
time for the number of folk to understand the consequences and be
concerned about them to reach critical mass. Everyone seems to start
off from the "what's the big deal?" perspective. Heck, I thought SLs
were fine too if we go back 5 years. It wasn't until we really started
thinking hard about them that their problems started becoming better
understood.

I've seen it now (somewhat independently) in the zeroconf WG too,
where similar issues have been discussed with LL addressing for
IPv4. There are plenty of people there that don't see what is hard
about scoping and that it's not a big deal to make applications handle
them. But over time, more people have also come around to
understanding that there are issues, and there are problems with
scoping.

And if you go to applications people (that is, those folk that spend
their lives doing applications rather than stack work) they seem much
more concerned on average that scoped addresses have significant (bad)
implications for applications.

> Second, by your own account we do need to prepare documents about what
> to do next. Call it deprecation if you want what I call it is that we
> have more work to do on site-locals and on the scoped architecture.

Clearly, that needs to be done. But there is a basic chicken-and-egg
problem. If the the WG isn't going to deprecate SLs, why would anyone
bother writing the document calling for their deprecation? The purpose
of the current discussion is to figure out whether we should go to the
next steps of making changes in various documents.

> > and it isn't clear how we can ever finalize the scoped
> > addressing architecture without some type of decision
> > on this issue.  Perhaps we can break out the
> > non-contentious parts and advance those parts?

> I believe we can progress on three topics:
> - Ambiguity
> - Convexity / defining the site borders.
> - Tuning the compromise.
> Unfortunately this requires people that are for IPv6 and not against and
> that are willing to compromise. I regret to report that at this point I
> count only three: Bob Hinden, you and me.

I don't understand what you are trying to say above, but if the
implication is that the only members of the WG that are being
reasonable and willing to listen are those listed above, I find that
rather offensive.

Thomas
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