[Guy Harris <gharris@xxxxxxxxxxxx>]

> Of course, I don't know whether on a *really* busy system - too busy to
> even drain the device's ring buffer in the interrupt handler - packets
> dropped because they arrive when the device's ring buffer is filled are
> counted, or if the device even tells you how many devices are dropped
> due to that, so perhaps nobody does a *perfect* job.

libpcap has a separate statistic that I infer is intended to count
those:

	u_int ps_ifdrop;        /* drops by interface XXX not yet supported */

but, well, as it says, "XXX not yet supported"....