Traffic flow: Internet traffic is not taken into account in the local hosts

RouterOS General
1

Hi. I have a task: to organize the consumption of Internet traffic by hosts on the local network. I use a bunch: Traffic-Flow + nfdump + nfsen. All is good! The packages come, statistics forms, but incoming traffic on the local machine is less then really was downloaded.
For example: 192.168.0.200 host download 250 Мb from internet. On wan-interface displays all 250 Mb, but on 192.168.0.200 – only 9Mb or less.
What I am doing wrong?
I tried on 6.34.6, 6.37.1 and 6.38.10 version of RouterOS.

Illustration for subject:

2

These 9M appear to be the incoming traffic on your lan interface. Please note that when dealing with NetFlow, the terms “incoming” and “outgoing” are always relative to a particular interface.

3

I mean that all Internet traffic is reflected on wan ip, and I don’t see how much data downloaded each hosts in local network (reason for use traffic-flow=) ).

4

What you are probably looking for is upload data on your lan interface. Sorry, if it was not clear from my first comment above.