Hi,

On Tue, Jun 18, 2013 at 02:14:18PM +0200, Bjørn Mork wrote:
> > I think this change is useful (without having looked at the actual code),
> > for exactly these reasons.  With the IPv6CP handshake, you'll arrive at
> > something the provider controls - but then in the /64 that is announced
> > by RA, you can choose whatever host id / interface identifier you want,
> > and I can see people wanting to use something easy to type and remember,
> > like "::1".
> 
> I must be missing something here...  Exactly how do you communicate an
> interface identifier via RA?

You don't.  Which is the point :-) - ISP announces the RA, end user gets
to pick whatever prefix they like, inside the /64 announced.

One could argue that they should only use the interface identifier that
PPP/IPv6CP negotiated, but in practice, that would break at least privacy
addresses - so what I've seen so far is "if the ISP sends RA with A=1, 
the user can use any address in that /64 they want".  Which even holds
true for 3G networks that force link-local to very specific IDs.

gert

-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             [email protected]
fax: +49-89-35655025                        [email protected]

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