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Gaia OS on 21000 appliance with SAM card becomes unresponsive when trying to delete a VLAN interface after passing multicast traffic through that VLAN interface
Symptoms
  • Gaia OS on 21000 appliance with SAM card becomes unresponsive in the following scenario:

    1. Create VLAN interfaces and enable PIM on them
    2. Enable SAM card on the corresponding physical interfaces
    3. Reboot the appliance
    4. Run multicast traffic for a little while through VLAN interfaces
    5. Stop the multicast traffic
    6. Let the multicast connections expire
    7. Try to remove the VLAN interfaces (either in Gaia Portal, or Gaia Clish; For VSX object - in SmartDashboard)
    8. Gaia OS becomes unresponsive (not possible to connect to the Gaia Portal anymore)
    9. The following message appears repeatedly on the console:
      unregister_netdevice: waiting for ethX-YYY.NN to become free. Usage count = 1
Solution
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