Simulating network latency

Kevin Stevens freebsd at
Fri May 14 16:04:09 PDT 2004

On Fri, 14 May 2004, Mike Jeays wrote:

> Is there a way to set up a machine with two network cards, which will
> simply forward every packet from one card to the other, but will
> introduce an arbitrary delay period?  Ideally, the delay period should
> be adjustable, and optionally different in the two directions.

Yes, man dummynet, and google for examples of people doing this very
thing.  We've done it in our lab here for that purpose.


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