NFV/VNF deployment nightmare

https://www.nextplatform.com/2017/07/10/using-network-break-server-silos/

demultiplexing layer between networks and the destination VM or VNF

• Virtio
• DPDK
• Single Root I/O Virtualization (SR-IOV)

when SR-IOV is implemented with traditional NICs, the networking services provided by the OVS and vRouter datapaths in kernel or user space are not available to the VMs.