Keith Moore wrote:
> Anything that involves ambiguous addresses will cause problems. 

Please read
http://www.ietf.org/internet-drafts/draft-hain-templin-ipv6-limitedrange-00.
txt and note there is no requirement for ambiguous addresses. Please read
http://www.ietf.org/internet-drafts/draft-hinden-ipv6-global-local-addr-02.t
xt and note there are no ambiguous addresses defined. 

> Anything that increases reliance on address selection will 
> cause problems. 

Having more than one address requires address selection, therefore this
issue is with multi-homing, not a particular prefix.

> Anything that makes it easy for limited reach 
> addresses to leak outside of their routing scope will cause 
> problems. 

So ban applications from passing addresses. This has nothing to do with any
particular prefix, because it applies to all equally. Routing and access
filters are a reality and will not go away.

> And the more different ways we have to provide 
> address stability, the more failure scenarios we're creating.

I happen to see if from the glass-half-full perspective and note that we are
providing more solution scenarios. 

> 
> > > But again, we can solve the local stability problem if there
> > > really is a significant use case for it.  
> > 
> > So solve the requirements and there will not be a need for other 
> > approaches. Until then, this filibuster is delaying network 
> managers 
> > from deploying IPv6 in a way that will meet their requirements.
> 
> Well it's not clear that such requirements are valid. 
> Somebody needs to make a convincing case.
> 
> And even if one accepts the need for a separate local 
> stability solution, this still wouldn't necessarily justify 
> ambiguous addresses or increased reliance on address selection.

Continuing to raise ambiguous addresses is simply creating FUD. The
requirements are valid to those that have them, independent of acceptance by
the IETF. The network manager will meet the requirements with the tools we
provide, even if that means using ones we wish they would not. Our only
recourse is to provide alternative tools that meet the requirements. 

Tony




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