RE: another renumbering question

[Hesham Soliman (ERA)]

> > I think there are two motivations for site-locals (that not everybody
> > agrees with):
> > 1. For sites that are isolated i.e. do not have a global prefix.
> > 2. To completely isolate traffic local to a site from 
> > site-renumbering events.
> 
> Let me add a third motivation - site-local addresses allow for very
> simple security policies or filters. For example the default
> configuration for a file server might be to provide service only to
> site-local clients.
> 
        => Another reason, is the ability to discover 
        some "basic" services within a site. The DNS discovery
        draft has recommended the Site-local anycast address
        for this purpose. 

        Hesham
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