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[Ryota Mibu <1336624@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

This bug is related to Nova and Neutron.

Libvirt driver cannot avoid ovs_hybrid though if NoopFirewallDriver is
selected, while using LibvirtGenericVIFDriver at Nova and ML2+OVS at
Neutron.

Since Nova follows "binding:vif_detail" from Neutron [1], that is
intended behavior. OVS mech driver in Neutron always return the
following vif_detail:

  vif_details: {
    "port_filter": true,
    "ovs_hybrid_plug": true,
  }

So, Neutron is right place to configure to avoid ovs_hybrid plugging. I
think we can set ovs_hybrid_plug=False in OVS mech driver if
security_group is disabled.

[1] https://review.openstack.org/#/c/83190/

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: ml2 ovs

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https://bugs.launchpad.net/bugs/1336624

Title:
  Libvirt driver cannot avoid ovs_hybrid

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  This bug is related to Nova and Neutron.

  Libvirt driver cannot avoid ovs_hybrid though if NoopFirewallDriver is
  selected, while using LibvirtGenericVIFDriver at Nova and ML2+OVS at
  Neutron.

  Since Nova follows "binding:vif_detail" from Neutron [1], that is
  intended behavior. OVS mech driver in Neutron always return the
  following vif_detail:

    vif_details: {
      "port_filter": true,
      "ovs_hybrid_plug": true,
    }

  So, Neutron is right place to configure to avoid ovs_hybrid plugging.
  I think we can set ovs_hybrid_plug=False in OVS mech driver if
  security_group is disabled.

  [1] https://review.openstack.org/#/c/83190/

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