The vm2vm parameter sets the mode of packet switching between guests in
the host.
-- 0 disables vm2vm, impling that VM's packets will always go to the NIC port.
+- 0 disables vm2vm, implying that VM's packets will always go to the NIC port.
- 1 means a normal mac lookup packet routing.
- 2 means hardware mode packet forwarding between guests, it allows packets
go to the NIC port, hardware L2 switch will determine which guest the
**--dequeue-zero-copy**
Dequeue zero copy will be enabled when this option is given. it is worth to
-note that if NIC is binded to driver with iommu enabled, dequeue zero copy
+note that if NIC is bound to driver with iommu enabled, dequeue zero copy
cannot work at VM2NIC mode (vm2vm=0) due to currently we don't setup iommu
dma mapping for guest memory.