Sorry,last time I said tcp seems not have the same issue like udp flows, but it's the short time that I test iperf3 tcp actually. TCP flows has the same question. The dpdk version is v19.11, and the ovs is v2.13. 刘峰麟 北京邮电大学/研究生/计算机学院(国家示范性软件学院) 北京