assymetric bandwidth

Hi, I'm running some network bandwidth tests on an Alma Linux VM (RHEL8) and I get assymetric performances. Test is run with netcat: server: nc -l 1122 -v >/dev/null client: dd if=/dev/zero bs=4M count=1024 |nc robin 1122 The server robin is not virtualized (physical host with CentOS7). Same...