[c-nsp] Policing Confusion

[Brett Looney]

> It is a bit dissapointing to know that you cant really manipulate
> the types of traffic inbound only outbound. I understand why though.

I've used inbound policing and shaping on heavily congested links with some
success - it has the effect of applying back-pressure to the incoming
streams - delaying ACKs and dropping packets; therefore slowing down
subsequent traffic. It isn't perfect but it does work to a degree - it just
isn't as good as outbound.

B.