address space shortage is just one of many possible problems.
as long as the network keeps growing at exponential rates we are
bound to run into some other major hurdle in a few years. it might
be address space but the chances are good that before we hit that
limitation again that we will run into some other fundamental barrier.
The problem some of us have been worring about is the routing table.
The routing table can either fill up or be overwhelmed by the rate
of change of routing entries. There is a tradeoff between these
two - no changes means that you can have a large static table; lots
of changes and you will need a smaller table to have stability.
Unfortunately its hard to predict when you will tip over...
--asp(_at_)partan(_dot_)com (Andrew Partan)