[Negativ]

edvsol,
man ipfw
в разделе pipe

вот вам выдержка с примером

Код:

 bw bandwidth | device
             Bandwidth, measured in [K|M]{bit/s|Byte/s}.

             A value of 0 (default) means unlimited bandwidth.  The unit must
             immediately follow the number, as in

                   ipfw pipe 1 config bw 300Kbit/s

             If a device name is specified instead of a numeric value, as in

                   ipfw pipe 1 config bw tun0

             then the transmit clock is supplied by the specified device.  At
             the moment only the tun(4) device supports this functionality,
             for use in conjunction with ppp(8).