yum install iperf
Fedora Modular 34 - x86_64 - Updates 0.0 B/s | 0 B 00:00
Errors during downloading metadata for repository 'updates-modular':
- Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/me...34&arch=x86_64 [Could not resolve host: mirrors.fedoraproject.org]
Error: Failed to download metadata for repo 'updates-modular': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/me...34&arch=x86_64 [Could not resolve host: mirrors.fedoraproject.org]
[root@SCSWAN ~]#


uname -r === 5.11.12-300.fc34.x86_64

uname -a === Linux SCSENDPOINT-1.bec.broadcom.net 5.11.12-300.fc34.x86_64 #1 SMP Wed Apr 7 16:31:13 UTC 2021 x86_64 x86_64 x86_64GNU/Linux

Can you Please help me on this

it is working from here, please try again. probably it was only a network issue