jeden návod říká použít verzi z repo a nekomprimovanou, to je sice starý, ale možná aktuální.
Metodou pokus omyl jsem přišel na to, že se jedná o chybu na straně serveru.
iperf.acd.net - dává tvojí chybu
159.16.237.138 - dává tvojí chybu
iperf.scottlinux.com
iperf -c iperf.scottlinux.com -i1 -t10 -u -b50M -d
------------------------------------------------------------
Server listening on UDP port 5001
Receiving 1470 byte datagrams
UDP buffer size: 176 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to iperf.scottlinux.com, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 176 KByte (default)
------------------------------------------------------------
[ 4] local 192.168.0.107 port 47866 connected with 173.230.156.66 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0- 1.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 1.0- 2.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 2.0- 3.0 sec 5.88 MBytes 49.3 Mbits/sec
[ 4] 3.0- 4.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 4.0- 5.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 5.0- 6.0 sec 5.97 MBytes 50.1 Mbits/sec
[ 4] 6.0- 7.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 7.0- 8.0 sec 5.97 MBytes 50.0 Mbits/sec
[ 4] 8.0- 9.0 sec 5.97 MBytes 50.1 Mbits/sec
[ 4] 9.0-10.0 sec 5.96 MBytes 50.0 Mbits/sec
[ 4] 0.0-10.0 sec 59.6 MBytes 50.0 Mbits/sec
[ 4] Sent 42488 datagrams
[ 4] Server Report:
[ 4] 0.0-10.9 sec 1.34 MBytes 1.03 Mbits/sec 20.274 ms 41495/42451 (98%)
[ 4] 0.0-10.9 sec 1 datagrams received out-of-order
iperf -c iperf.scottlinux.com -i1 -t10 -u -b50M -d -C
s parametrem -C funguje bezchybně:)
Takže by to možná chtělo na serveru přidat -C?