Hi,
Please set MTU=9000 and try the command:
$ iperf3 -c 10.0.0.6 -u -b 0 -l 65507
warning: UDP block size 65507 exceeds TCP MSS 8914, may result in fragmentation / drops
Connecting to host 10.0.0.6, port 5201
[ 5] local 10.0.0.1 port 52046 connected to 10.0.0.6 port 5201
[ ID] Interval Transfer Bitrate Total Datagrams
[ 5] 0.00-1.00 sec 1.07 GBytes 9.16 Gbits/sec 17490
[ 5] 1.00-2.00 sec 772 MBytes 6.48 Gbits/sec 12360
[ 5] 2.00-3.00 sec 807 MBytes 6.77 Gbits/sec 12920
[ 5] 3.00-4.00 sec 811 MBytes 6.80 Gbits/sec 12980
[ 5] 4.00-5.00 sec 1.07 GBytes 9.18 Gbits/sec 17520
[ 5] 5.00-6.00 sec 1.07 GBytes 9.17 Gbits/sec 17510
[ 5] 6.00-7.00 sec 1.07 GBytes 9.18 Gbits/sec 17520
[ 5] 7.00-8.00 sec 1.07 GBytes 9.15 Gbits/sec 17460
[ 5] 8.00-9.00 sec 1.07 GBytes 9.17 Gbits/sec 17500
[ 5] 9.00-10.00 sec 1.06 GBytes 9.14 Gbits/sec 17440
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-10.00 sec 9.80 GBytes 8.42 Gbits/sec 0.000 ms 0/160700 (0%) sender
[ 5] 0.00-10.00 sec 9.78 GBytes 8.40 Gbits/sec 0.068 ms 427/160700 (0.27%) receiver
iperf Done.