> >   > > => I certainly didn't mean to suggest that the IETF
  > >   > > has an enforcement authority. I meant that this words
  > >   > > are used in cases where: if not followed, the protocol
  > >   > > will break. Therefore people generally follow them.
  > >   >
  > >   > if SLs are used in an environment where applications 
  > communicate
  > >                                       
  > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  > >   > across scope boundaries,
  > >     ^^^^^^^^^^^^^^^^^^^^^^^
  > > => In other words, be careful how you use it. That's not
  > > a reason to deprecate the use of site-locals altogether.
  > 
  > Their use should be confined to completely isolated 
  > networks so that 
  > they don't break applications.   And yet this same 
  > constraint was imposed
  > on RFC 1918 and it didn't stop RFC 1918 addresses from 
  > being misused.
  > So yes, I think there's a compelling case for deprecating 
  > SLs entirely.
  > But I'd be happy to hear of a way to impose a 1918-like restriction
  > that would actually work this time around.

=> It has a better chance of working this time because:
- No one expects addresses to become a scarce resource in our
lifetime anyway

- I haven't seen any plans by ISPs to charge based on 
the number of addresses. 

So, I don't think it's quite the same problem as with
RFC1918.

Hesham


  > 
  > Keith
  > 
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