Public bug reported:

When vm connected to a dpdkvhostuser Interface of OVS 2.5, started VM,
but the link status is error using cmd like "ovs-ofctl show ovsbr0"; It
should be 0 for config and state, but it shows PORT_DOWN and LINK_DOWN.

5(vhost-user-3): addr:00:00:00:00:00:00
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max

Starting VM's cmd:
qemu-system-x86_64 -m 1024 -smp 1 -cpu host -hda /root/freewaf.qcow2 -boot c 
-enable-kvm -net none -vnc 0.0.0.0:3 -chardev 
socket,id=char3,path=/var/run/openvswitch/vhost-user-3 -netdev 
type=vhost-user,id=mynet3,chardev=char3,vhostforce -device 
virtio-net-pci,mac=00:00:00:00:00:03,netdev=mynet3  -object 
memory-backend-file,id=mem,size=1024M,mem-path=/dev/hugepages,share=on -numa 
node,memdev=mem -mem-prealloc -d exec

OVS version is:
http://openvswitch.org/releases/openvswitch-2.5.0.tar.gz

OS version:
Ubuntu 14.04.2 LTS

** Affects: openvswitch-dpdk (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1587008

Title:
  Dpdkvhostuser Interface Link status error in OVS 2.5

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