CIDR FAQ

Fri Aug 18 17:11:16 UTC 1995

At 4:57 PM 8/17/95, bmanning at ISI.EDU wrote:
>Ah. here is the rub.  When you ISP buddies come back, you should ask
>them to return the origianal /22 for a /20.  That way, the total size
>of the routing system stays the same!

If everyone did a clever job of allocation, and the ISP in question had
grown quickly enough, you'd be able to expand the that /22 into a /20 at
the very same address because the next 3 /22s would still be available.

But I've already beaten that horse...