I interpret the spec completely different than you and discussing it now is
a waste of both our time and the mail list.  Also this should have nothing
to do with link local.

Paul can you shed some light on this conversation as Robert and I see your
draft solving different problems :  thanks...........

/jim

> -----Original Message-----
> From: ext Robert Elz [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday,March 07,2001 2:02 AM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED];
> [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: Question on scopes involving IPv6 addresses 
> 
> 
>     Date:        Tue, 6 Mar 2001 14:47:47 -0600 
>     From:        [EMAIL PROTECTED]
>     Message-ID:  <B9CFA6CE8FFDD211A1FB0008C7894E46036985D0@bseis01nok>
> 
>   | It extends bits to the left of the SLA to be used to 
> differentiate one site
>   | from the other
> 
> No, it can't, because the addresses aren't guaranteed to be unique.
> 
> What it does is mean that sites are less likely (much much 
> less likely)
> to need to renumber their site local addresses when they merge (or
> choose to use their site locals to implement a VPN, so they're immune
> from global address renumbering as a unit - which is close to the same
> thing as a merger though the sites probably wouldn't want to 
> use that word).
> 
> Site differentiation still has to be done using the 
> procedures that are
> in place now for site locals that aren't even slightly unique.
> 
> so...
> 
>   | and it does solve Alex's problem in a different way.
> 
> it doesn't - and I think for rational discussion of Paul's draft,
> that needs to be very clearly understood.   All that draft really
> does is says "These MBZ bits in site local addresses, well, they
> no longer MBZ" - and then goes on to give a sane procedure for
> picking the value to put in those bits to minimise the chances of
> a collision (it probably goes slightly overboard in the way that
> is mandated, but that is perhaps a good thing).
> 
> Please, no-one read more into it than that - as it is, I see no
> reason why the proposal shouldn't be accepted without even a lot
> of discussion (the draft needs a good fraction of its content
> ripped out - I have been discussing that with Paul off the list,
> but that doesn't affect the basic idea or point).
> 
>   | That has nothing to do with site locals FE80 vs FEC0 is 
> pretty easy to
>   | pars.
> 
> Yes .. but if we were using bits in the address to distinguish scopes
> as Alex asked about (and you may remember I proposed years ago), then
> it should certainly be done for both link local and site local.  Doing
> just one of those wouldn't make any sense at all (it doesn't 
> reduce the
> API complexity, which is the only point).
> 
> kre
> 
> 
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