Hi Stig,
> -----Original Message-----
> From: Stig Venaas [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, August 10, 2005 4:24 AM
> To: Greg Daley
> Cc: timothy enos; ipv6@ietf.org
> Subject: Re: Distribution of RFC 3484 address selection policies
>
> On Wed, Aug 10, 2005 at 05:24:23PM +1000, Greg Daley wrote:
> [...]
> > I'd suggest that if preferences are all that's needed, then the
> > function matches that for which the options are used now.
>
> I agree that if only prefix preference is needed (possibly also
> v4 vs v6), then it seems obvious to learn this together with the
> prefixes themselves.
I don't believe that only prefix preference is needed. For mobile nodes,
both for source and destination address selection there is home
vis-à-vis care-of addresses (rule #4). Perhaps also given RFC 3041
section 2.3, source address rule #7 (either to prefer public or
temporary) would be needed.
For all nodes, it seems that source address selection rule #2 is
required:
'Rule 2 (prefer appropriate scope) MUST be implemented
and given high priority because it can affect interop-
erability.' (RFC 3484, section 5)
> I.e. if you use slaac, then also get the
> preference that way (similarly with dhcp or other mechanisms).
> The preference is for destination address selection, right?
>
> So a question then is whether that is enough or if there are
> many cases where the full policy (including source address
> selection) is needed.
I wouldn't agree that all source address selection rules should always
be excised from what is distributed.
> If the full policy is needed in some cases,
> then we have to consider whether it's worth having two solutions.
IMO, it doesn't seem necessary to have two solutions, if what is meant
by that is to have one for SLAC clients and another for DHCPv6 clients.
Using RAs could probably work for both types of clients.
> I don't know myself, I think it requires further study.
Agreed.
> Stig
Best regards,
Tim
1Sam16:7
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