To use "-vdev",
please make sure there is no DPDK-compatable-driver and use "-no-flush-rx"
sudo ./testpmd -l 0-3 --vdev=‘net_pcap0,rx_pcap=../test.pcap,tx_pcap=test1.pcap‘ --no-flush-rx
DPDK testpmd use vdev net_pcap0
原文：https://www.cnblogs.com/quinn-yann/p/9736287.html