---
features:
  - In order to reduce metadata proxy memory footprint, ``haproxy`` is now used
    as a replacement for ``neutron-ns-metadata-proxy`` Python implementation.
upgrade:
  - Since ``haproxy`` was not used before by ``neutron-l3-agent`` and
    ``neutron-dhcp-agent``, rootwrap filters for both agents have to be copied
    over when upgrading.
  - To upgrade to the ``haproxy`` based metadata proxy, ``neutron-l3-agent``
    and ``neutron-dhcp-agent`` have to be restarted. On startup, old proxy
    processes will be detected and replaced with ``haproxy``.