I have ran iperf successfully on these two machines as a transmitter-receiver pair generated expected output many times before. However occasionally, I would get this error message: "read failed: connection refused". (My output files thought seem to appear as if nothing bad had happened, that is for receiver output,
On line 6, I see the the IP-port pairs of both machines.
On line 8, I see the information i expect, time of test, jitter, %lost packets etc.
as expected.
likewise, the transmitter output appears as if no errors had occured
Can I trust the numerical results however? The numerical results seem at least somewhat reasonable in my opinion. Upon further experimentation, I have replicated this problem on a decent number of different transmitter-receiver pairs.