* situation where we are adding and removing entries such that we
* flip-flop over the threshold, then this non-trivial work is added
* to each of those routes adds/deletes - not a situation we want.
* situation where we are adding and removing entries such that we
* flip-flop over the threshold, then this non-trivial work is added
* to each of those routes adds/deletes - not a situation we want.