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+
+virtio-net acceleration features not set when plugged into backend dynamically
+
+When using indpendent transport and backend in this case virtio-net-device transport, none of the acceleration features are set after guest probes the transport the backend is plugged into. For virtio-net this leads to low throughput/performance.  This holds true for  virtio-mmio, PCI transports and most likely for others as well (CCW, S390) and other backends
+
+Command to run:
+./qemu-system-arm -enable-kvm -smp 2 -kernel zImage -dtb ./guest-a15.dtb -m 512 -M vexpress-a15 -cpu cortex-a15 -nographic \
+      -append "root=/dev/vda rw console=ttyAMA0 rootwait" -drive if=none,file=/mnt/gauss.root,id=vm1 \
+      -device virtio-blk-device,drive=vm1 -netdev type=tap,id=net0,ifname=tap0 \
+      -device virtio-net-device,netdev=net0,mac="52:54:00:12:34:58"
+
+For x86 same virtio command for network.
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