While testing this software I receive flows thit not
olny incomning (from net to PC/gateway) packets but
also outbound packets. This doubles counted traffic.
As I understand Cisco's NetFlow, cisco routers count
only incoming traffic.
There is woraround - add "ether src MACADDR" to filter
rules in command line.
Think, is isn't reliable enough. Command line switch
"count only incoming/ounbound/both" is reasonable.
("both" is usefull to automate filtering out odd
traffic on promic. interface.