Need help in order to make the iperf working

[egoltzman]

Hello,
First I will just say that this repo is great! Your documentation and the code version itself is gold, thank you!
I built and load the STM32H723_Nucleo_ETH to my Nucleo after I changed the board IP to 192.168.0.160 to fit my network and I run an iperf-2.2.1 on my windows PC with IP 192.168.0.32.
But, I don't see any data on the PC running iperf in server mode on port 5001.
I check with Wireshark also and I don't see data other then a single line:
1225 27.865374 192.168.0.160 192.168.0.34 TCP 60 52432 → 5001 [SYN] Seq=0 Win=5840 Len=0 MSS=1460
Ping from 192.168.0.32 to 192.168.0.160 works fine.
Any help will be appreciate.
Thanks
Eyal