[Guy Harris <guy@xxxxxxxxxxxx>]

Jeff Morriss wrote:

> (AFAIK the number of dropped packets is whatever the capture 
> mechanism--libpcap or WinPCAP--tells it.)

...and if you have libpcap on Linux, and it wasn't built with support 
for the PACKET_STATISTICS getsockopt() operation, it can't find out how 
many packets were dropped by the capture socket, and will report 0 as 
the number of dropped packets.

I don't know whether the libpcap in FC4 is built with that support or 
not; the configure script should detect whether the <linux/if_packet.h> 
structure defines the tpacket_stats structure and, if so, enable support 
for the PACKET_STATISTICS getsockopt() operation.