delay after starting iperf before sampling data. otherwise can get data from the previous session and then the timestamp jumps
delay after starting iperf before sampling data. otherwise can get data from the previous session and then the timestamp jumps

opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open