-n 2 --vdev 'eth_pcap1,rx_pcap=${rx_file},tx_pcap=${tx_file}' \
-b ${nic_pci} -- -P -U -R 0x1000 -S 0x1000 -s 0x20 -f ${fe_cfg} -b ${be_cfg} \
port=0,lcore=0,rx_offload=0,tx_offload=0,ipv4=${IPv4_addr} &"
elif [ "$IPv4_addr" == "NONE" ]; then
-n 2 --vdev 'eth_pcap1,rx_pcap=${rx_file},tx_pcap=${tx_file}' \
-b ${nic_pci} -- -P -U -R 0x1000 -S 0x1000 -s 0x20 -f ${fe_cfg} -b ${be_cfg} \
port=0,lcore=0,rx_offload=0,tx_offload=0,ipv4=${IPv4_addr} &"
elif [ "$IPv4_addr" == "NONE" ]; then