Alexey Toptygin wrote:
No, attaching to the input is just as easy as to the output. The reason
that isn't implemented is that it wouldn't really be useful.
You are full of it.
What everybody who asks for shaping want is mainly ingress shaping and
it works just fine.
When TCP starts to notice that packets are getting lost it will throttle
down and transmit slower, just like any non-idiotic protocol, because
that's the way the Internet works.
You are right that the packets that have already traversed the DSL line
have consumed bandwidth that can never be reclaimed, but the point is
that once you start dropping packets then fewer will follow and the
situation will stabilize.
The fact remains that ingress shaping is immensely useful and that it works.
Linux traffic shaping doesn't support it out of the box (pre 2.6.16) and
that's because it was hard(er) to implement, not because it's not useful
it is in the real world.
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