[Bug 1672429] [NEW] Seems to be no support for tap interfaces - Unexpected vif_type=tap

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nova-lxd fails to launch an instance on a compute host when the network
type uses tap interfaces in stead of bridged interfaces.

We use Calico for networking, and it seems that this doesn't work for
Mitaka on Xenial at least.

It fails with this error:

2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf] Traceback (most recent call last):
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/nova_lxd/nova/virt/lxd/operations.py", line 555, in cleanup
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     self.unplug_vifs(instance, network_info)
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/nova_lxd/nova/virt/lxd/operations.py", line 335, in unplug_vifs
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     instance=instance)
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     self.force_reraise()
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     six.reraise(self.type_, self.value, self.tb)
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/nova_lxd/nova/virt/lxd/operations.py", line 328, in unplug_vifs
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     self.vif_driver.unplug(instance, viface)
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]   File "/usr/lib/python2.7/dist-packages/nova_lxd/nova/virt/lxd/vif.py", line 191, in unplug
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf]     _("Unexpected vif_type=%s") % vif_type)
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf] NovaException: Unexpected vif_type=tap
2017-03-13 14:57:38.365 28215 ERROR nova_lxd.nova.virt.lxd.operations [instance: beeae088-ae26-4c75-9169-1c77f98513bf] 


System info:


Description:	Ubuntu 16.04.2 LTS
Release:	16.04

nova-compute-lxd:
  Installed: 13.2.0-0ubuntu1.16.04.1
  Candidate: 13.2.0-0ubuntu1.16.04.1
  Version table:
 *** 13.2.0-0ubuntu1.16.04.1 500
        500 http://ubuntu-srv.ocado.com/xenial_r2 xenial-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     13.0.0-0ubuntu3 500
        500 http://ubuntu-srv.ocado.com/xenial_r2 xenial/main amd64 Packages


Please let me know if you need any further info.

Thanks.

** Affects: nova-lxd (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Seems to be no support for tap interfaces - Unexpected vif_type=tap
https://bugs.launchpad.net/bugs/1672429
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