sudo ./usertools/dpdk-devbind.py -b ${port1_driver} ${port1_pci} || \
{ echo "Unbind ${port1_pci} failed"; exit 1; }
sudo ./usertools/dpdk-devbind.py -b ${port2_driver} ${port2_pci} || \
sudo ./usertools/dpdk-devbind.py -b ${port1_driver} ${port1_pci} || \
{ echo "Unbind ${port1_pci} failed"; exit 1; }
sudo ./usertools/dpdk-devbind.py -b ${port2_driver} ${port2_pci} || \