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[Bug 2069543] Re: instance tap port has dead vlan when parent port for trunk

 

my intiall read on this is this is a neutorn bug not an os-vif one and
I'm reluctant to change the code in os-vif


** Changed in: os-vif
       Status: In Progress => Opinion

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https://bugs.launchpad.net/bugs/2069543

Title:
  instance tap port has dead vlan when parent port for trunk

Status in neutron:
  In Progress
Status in os-vif:
  Opinion

Bug description:
  zed release, version 21.2.1

  i have not tried to reproduce on a newer version

  
  when creating a trunk the tap interface for the instance is still in dead vlan

      Bridge tbr-d0aed4fd-1
          datapath_type: system
          Port tbr-d0aed4fd-1
              Interface tbr-d0aed4fd-1
                  type: internal
          Port tap2f072c63-b6
              tag: 4095
              Interface tap2f072c63-b6
          Port tpt-2f072c63-b6
              tag: 0
              Interface tpt-2f072c63-b6
                  type: patch
                  options: {peer=tpi-2f072c63-b6}

  if I issue set tag=[] to force the tap port into being a trunk with:
  ovs-vsctl set port tap2f072c63-b6 tag=[]

  traffic starts to flow which makes me think the port binding for the
  tap is not done correctly

  logs: https://paste.opendev.org/show/bstDgfi43ManfW1RijJo/

  trunk ID: d0aed4fd-193d-4164-ba48-7d1d137787e1
  parent port ID: 2f072c63-b6ce-45d3-96b6-27b4f46d397b

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References