iperf3 - rdomain

how do i run a iperf3 server in a rdomain ? if you don’t know what a rdomain is, just have a look at the man pages show interface with rdomain -> rdomain 1 show that this Interface is not running in the Default RDomain 0 ifconfig em3 em3: flags=808843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF4> rdomain 1 mtu 1500 lladdr de:ad:be:ef:be:ef description: connected to Switch (Gi0/1) index 4 priority 0 llprio 3 media: Ethernet autoselect (1000baseT full-duplex) status: active inet 192.