Can DUMMYNET handle weighting of traffic according to firewall rules?

[John Nielsen]

On Dec 12, 2014, at 8:23 AM, Brett Glass <brett at lariat.net> wrote:

> At 03:06 AM 12/12/2014, Luigi Rizzo wrote:
> 
>> you can set the limit for the pipe, create two queues with different
>> weights attached to the pipe, and then schedule.
>> 
>> ipfw pipe 12 config bw 3456 Kbit/s
>> ipfw queue 34 config weight 2 pipe 12
>> ipfw queue 56 config weight 1 pipe 12
>> ipfw add queue 34 in recv halfduplexlink0
>> ipfw add queue 56 out xmit halfduplexlink0
> 
> Alas, as I understand it (and also based on my empirical tests), this will give downstream traffic priority but will still let the same amount of upstream traffic through per second if there is no downstream traffic... because the capacity of the pipe is still the same. What I want to do is have the pipe, not the queue, weight the upstream traffic twice as heavily.

Is there a reason you can't use a separate pipe for each direction?