The package in Debian/Ubuntu non-free should work. Otherwise, it's
fairly straight forward to compile netperf from source. If you just
stick it in /usr/local/bin (i.e., $PATH before the system-package
version), Flent should pick it up from there...

-Toke

Thanks, you were right, it was easy to compile netperf on Fedora, got it running without problems.

Valent.