* problems and amount of processing, we decided to hold off for
* the time-being.
*
- * - Multiple Controllers. There is nothing intrinsic in the high-
- * level design that prevents using multiple (known) controllers,
- * however, the current implementation's data structures assume
- * only one.
- *
* - Differing Controllers for Switches. All switches must know
* the L3 addresses for all the controllers that other switches
* may use, since rules need to be set up to allow traffic related