Dummynet fragmenting packets

[Mike Murphree]

Having an issue on a 5.3 system using ipfw and dummynet to create a
bandwidth limited and large latency pipe for a mpeg video stream.  If I
pass the packets between the two NICs without routing through a dummynet
pipe, it's fine.  If I route it through a pipe, it's fragmenting each
packet (client requested 1468 byte packets) into two packets, the second
packet with an offset of 1440 bytes.  Does anyone have any idea why it's
doing this, and have a solution to this problem?

Thanks,
Mike (please cc directly)