Traffic Shaper does not appear to be working to limit bandwidth

[sparticle]

Hello, I have followed the guides in the documentation and started with a simple bandwidth limiting pipe and rule for a host on the plan that frequently downloads large update many 10's of GB.

I have tried limiting the bandwidth of this host but when checking the live stats in ntopNG is can see it is using double what I have set as the limit.

This is a very simple rule almost a direct copy of the one in the docs.

Both the rule and pipe are activated and I can see them in the status page.

Is there some other service I need to start/restart to have these rules enforced or does it simply not work the way I am thinking.

Any help appreciated.

Cheers
Spart