I've downloaded this one, but for some reason it doesn't work:

[admin@Wl-500gP tmp]$ iperf
-sh: iperf: not found

[admin@Wl-500gP tmp]$ ipkg list_installed iperf
iperf - 2.0.2-2 -
Successfully terminated.

[admin@Wl-500gP tmp]$ iperf
-sh: iperf: not found

[admin@Wl-500gP tmp]$ find / -name iperf -print
/opt/tmp/iperf
/opt/bin/iperf
/proc/7/fd: No such file or directory

[admin@Wl-500gP tmp]$ /opt/bin/iperf
-sh: /opt/bin/iperf: not found

[admin@Wl-500gP tmp]$ ls -l /opt/bin/iperf
-rwxr-xr-x 1 admin root 86560 Oct 27 12:53 /opt/bin/iperf
[admin@Wl-500gP tmp]$


Looks like something is wrong with that binary, because all the other packages are working normally.

Can you help me out?

Regards,
Alex