Today I found BUG in ROS 4.4 at x86 with traffic-flow (netflow).
After reboot traffic-flow (netflow) not sent any data to collector (billing system).
It will be stop until:
1) in terminal run command: ip traffic-flow print
or
2) in windox open setting IP->Traffic Flow.
Very strange, but only after it (after 20 seconds) traffic-flow (netflow) started sent flows.
I chacked it 3 times with different delay from 1 minutes to 20 minutes after reboot, but result the same - netflow start sent data ONLY open setting traffic-flow (from console or from winbox).
Can anybody confirm it?