[Iperf-users] Odd issue with broadcast under Linux

[Matthew C. <Mat...@re...>]

Hello folks,

I'm trying to test broadcast rate limiting through a managed switch. 
Asking the internet suggests that just doing a UDP send to a broadcast 
address should work. So, I did the following:

Server (10.42.42.1/24): iperf -s -u
Client (10.42.42.2/24): iperf -u -c 10.42.42.255

However, the result I get on the client is:

connect failed: Permission denied

`sudo`-ing doesn't help, so it's not an "only root can send broadcast" 
issue.

iperf version is:

iperf version 2.0.4 (7 Apr 2008) pthreads


Both machines are Ubuntu 10.04.

I've also tried it on Ubuntu 12.04 (iperf version 2.0.5 (08 Jul 2010) 
pthreads), with the same result.

Any suggestions?


-- 
Matthew Caron, Software Build Engineer
Sixnet, a Red Lion business | www.sixnet.com
+1 (518) 877-5173 x138 office