---
features:
  - The API definition for the ``dvr`` extension is now available in
    ``neutron_lib.api.defintions.dvr``.
  - The two ``MacAddressGenerationFailure`` exceptions are now available
    as ``HostMacAddressGenerationFailure`` and
    ``NetworkMacAddressGenerationFailure`` for host and network MAC address
    generation errors respectively.
