** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1597208

Title:
  Failed to Create an Instance using macvtap cause existence of "_" in
  interface vf_name (Regex miss)

Status in neutron:
  Fix Released

Bug description:
  Step to reproduce :

  1) neutron port-create --name port1 --binding:vnic_type=macvtap private
  2) nova boot --flavor 2 --image <image_id> --nic port-id=<port_id> vm_1

  Interface Name on Compute = "p2p1_0"

  From n-cpu.log :

  2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager 
[req-a4694341-f7e0-4e7b-b98e-5f640abbf950 admin admin] [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] Failed to allocate network(s)             
    2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] Traceback (most recent call last):
  2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]   File 
"/opt/stack/nova/nova/compute/manager.py", line 2064, in 
_build_and_run_instance              2016-06-29 06:01:04.592 1265 ERROR 
nova.compute.manager [instance: 7a3063f5-43a7-4d25-b23e-335a2a3274ab]     
block_device_info=block_device_info)
  2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]   File 
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 2780, in spawn              
              2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager 
[instance: 7a3063f5-43a7-4d25-b23e-335a2a3274ab]     
block_device_info=block_device_info)
  2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]   File 
"/opt/stack/nova/nova/virt/libvirt/driver.py", line 4946, in 
_create_domain_and_network       2016-06-29 06:01:04.592 1265 ERROR 
nova.compute.manager [instance: 7a3063f5-43a7-4d25-b23e-335a2a3274ab]     raise 
exception.VirtualInterfaceCreateException()
  2016-06-29 06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] VirtualInterfaceCreateException: Virtual 
Interface creation failed                                   2016-06-29 
06:01:04.592 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]
  2016-06-29 06:01:04.593 1265 DEBUG nova.compute.utils 
[req-a4694341-f7e0-4e7b-b98e-5f640abbf950 admin admin] [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] Virtual Interface creation failed 
notify_about_instance_usage /opt/stack/nova/nova/compute/utils.py:284
  2016-06-29 06:01:04.593 1265 ERROR nova.compute.manager 
[req-a4694341-f7e0-4e7b-b98e-5f640abbf950 admin admin] [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] Build of instance 
7a3063f5-43a7-4d25-b23e-335a2a3274ab aborted: Failed to allocate the 
network(s), not rescheduling.
  2016-06-29 06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] Traceback (most recent call last):        
                                                           2016-06-29 
06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]   File 
"/opt/stack/nova/nova/compute/manager.py", line 1926, in 
_do_build_and_run_instance
  2016-06-29 06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]     filter_properties)                    
                                                           2016-06-29 
06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]   File 
"/opt/stack/nova/nova/compute/manager.py", line 2102, in _build_and_run_instance
  2016-06-29 06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab]     reason=msg)                           
                                                           2016-06-29 
06:01:04.593 1265 ERROR nova.compute.manager [instance: 
7a3063f5-43a7-4d25-b23e-335a2a3274ab] BuildAbortException: Build of instance 
7a3063f5-43a7-4d25-b23e-335a2a3274ab aborted: Failed to alloca
  te the network(s), not rescheduling.                                          
                                                                                
                                                2016-06-29 06:01:04.593 1265 
ERROR nova.compute.manager [instance: 7a3063f5-43a7-4d25-b23e-335a2a3274ab]

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