> > One of the disadvantages of working on a draft for 5-6 years is that
> > the world might have changed around you.
> > Assuming that the new world will take one step back, one to the side,
> > and one step forward to use the new approach about to become a proposed
> > standard when there already is a well-understood and deployed mechanism
> > seems a bit odd to me.
> 
> Well I have had an awful time trying to reply to this due to weirdness
> with my wireless connection and sendmail, but let me paraphrase myself
> and try sending again; maybe the 10th time is a charm...
> 
> 
> I am not sure how silly your answer is supposed to be, but I am stuck on
> thinking about how we should interact with a changed world in this case.
> There is some conversation about replacing HAO with a nascent proposal
> which is based upon using tunelling, which you said is about to become a
> proposed standard.

Ah - sorry for not being more clear.
The "new approach about to become a proposed standard" is, from the
perspectives of the IETF at large, something called Mobile IPv6.

The well-understood and deployed mechanism (for MIPV4, IPsec, etc) is
IP-in-IP tunneling.

Does that change things?

  Erik

> This means that the solution might "make sense" in
> this changed world -- but one could come up with another alternative
> based on other standards, it is just a matter of the lingua franca used
> to describe mechanisms to achieve the same goal. The questions, as I
> understand them, are really (a) is HAO broken enough that we need to
> remove and/or replace it? and if so, (b) is the tuneling proposal a
> suitable replacement?
> 
> There seems to be some disagreement about (a), but even assuming (a) for
> the sake of argument.. people have so far refuted the relative
> advantages of (b), other than the one in your answer: because it is
> based on a proposed standard. It seems the security and anonymity
> advantages are in question. At least insofar as the proposal might
> relate to work in the Mobile IP group.
> 
> There are many examples of protocols that exist in today's changed
> world, and still do just fine. The discussions about Mobile IPv6 have
> certainly included considerations about what has changed in the last 5
> years. But they are based on technical merits as well -- in my own
> opinion, there doesn't seem to be anything that's come along that has a
> clear superiority *and* serves the same purpose of the HAO, so it is
> just as legitimate now as it was 5 years ago (hence you know where I
> stand on (a)).
> 
> 
> Well maybe you can tell me now how serious your answer was. And if I am
> still trying to figure it out, perhaps the joke is on me...
> 
> -TJ
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