---
deprecations:
  - |
    "ipv6_pd_enabled" has been marked as deprecated and marked as experimental.
    To continue using it, deployers have to set to True the "ipv6_pd_enabled"
    option in the "experimental" section of neutron.conf. See
    `Dibbler project concluded <https://bugs.launchpad.net/neutron/+bug/1916428>`_.