Hi,all

I tried to create vhost-user ports with OVS-DPDK, but failed. And I can't find 
the solution.

 Step1: ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
 Step2: ovs-vsctl add-port br0 vhost-user1 -- set Interface vhost-user1 
type=dpdkvhostuser

Step 1 is ok. But Step2 failed. I checked the log, it says:

2017-12-28T13:11:22.979Z|00020|netdev|WARN|could not create netdev vhost-user1 
of unknown type dpdkvhostuser
2017-12-28T13:11:22.979Z|00021|bridge|WARN|could not open network device 
vhost-user1 (Address family not supported by protocol)
2017-12-28T13:11:59.036Z|00022|netdev|WARN|could not create netdev vhost-user1 
of unknown type dpdkvhostuser
2017-12-28T13:11:59.036Z|00023|bridge|WARN|could not open network device 
vhost-user1 (Address family not supported by protocol)
2017-12-28T13:13:58.919Z|00024|netdev|WARN|could not create netdev vhost-user1 
of unknown type dpdkvhostuser
2017-12-28T13:13:58.919Z|00025|bridge|WARN|could not open network device 
vhost-user1 (Address family not supported by protocol)

I wonder if anyone knows the reason.

OVS version: 2.8.1
DPDK version: 17.05.1
OS version: CentOS 7

I tried again in ubuntu using the openvswitch-switch-dpdk package, the same 
problem happened.
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