But (also realistically) a "sufficiently large enterprise" that uses all of RFC1918 is not going to be sitting behind a CGN...
W
Big enterprises buy small ones; sometimes at a great rate. Imagine an enterprise that uses this /12 for its corporate network buying a wee little company that was connected via CGN up to the purchase. The order in which they renumber/get attachments to the new mothership/ start passing traffic from this /12 gets just a little bit more strict and the chance of ticket-inducing failure goes up just that extra amount.
Ted
Ted
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