Compile in FreeBSD:
- does not work on foxchapel (FreeBSD 2.2CAM-19980716-SNAP #0)
- works on swissvale (FreeBSD 4.3-RELEASE)

works with old viewer:
Sigcomm2001CameraReady/Subset-2Mbps/2001.05.28.14.55.37.tfrc.2048.SUBSET.LATENCY_ONLY