Hi All,

>The proposed text is trying to say that temporary addresses are preferable
>but that there might be issues (such as applications having problems)
>which consistitute a good enough reason to not follow the default.
>Thus there is significant freedom for implementors to use their best
>judgement based on their knowledge about the applications.

Is it optional for a vendor to implement temporary addresses?  Is it optional
for a user to configure site-local addresses on a box (or perhaps even for
a vendor to support them)?

One reason that has been put forth for having a fixed set of address selection
rules is that it will be possible for implementations to know what addresses 
will be preferred, and override that behaviour if desired.

I'm not quite sure how this works when it isn't clear that all vendors will
implement all address types (temporary, site-local, etc.), or that all address
types will be configured for a given system.  This particularly becomes 
problematic when optional address types (temporary, perhaps site-local)
are preferred over required address types (link-local and global).

Margaret




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