This version also builds under ia64
From the iperf changelog:
Added bidirectional testing both simultaneously and tradeoff
Added server side statistic reporting on the client for UDP
Limits on the number of connections and locations for servers
Changes:
Fixed the IPv6 Multicast implementation
Removed the SegFault on exit by Ctrl-C for the server
Thread bug resulting in "pthread create failed" after many clients
"connect failed" on server for UDP clients when IPv6 is enabled is fixed