The created filenames are based on the filename given with the B<-w> option,
the number of the file and on the creation date and time,
-e.g. outfile_00001_20180714120117.pcap, outfile_00002_20180714120523.pcap, ...
+e.g. outfile_00001_20190714120117.pcap, outfile_00002_20190714120523.pcap, ...
With the I<files> option it's also possible to form a "ring buffer".
This will fill up new files until the number of files specified,