Thus spake "Eliot Lear" <lear(_at_)cisco(_dot_)com>
Right up till the point where two companies start communicating with
one another directly with site-locals. Even if there is a router frob to
keep the scopes scoped, you can bet it won't be used until someone
realizes that the above problem occurred.
I've dealt with many companies interconnecting where both use RFC1918
space -- NAT is the first thing discussed. You forget, these people are
connecting for a _business reason_ and there is real money to be lost if
they mess up. It's a totally different engineering model than the public
Internet.
S
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking