Live-migration issue with "NotImplementedError: Cannot load 'vif_type' in the base class"

Solution In Progress - Updated -

Issue

  • On our platform OSP16/Contrail2011, the live-migration fails with this log on the compute node:
2021-03-30 12:43:47.278 7 ERROR oslo_messaging.rpc.server NotImplementedError: Cannot load 'vif_type' in the base class

Environment

  • Red Hat OpenStack Platform 16.1.5 and below (RHOSP)

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