With the release of 4.2.0 of keystonemiddleware using the in-process token cache is no longer recommended. It is recommended that a memcache backend to store tokens is used instead, This installs and configures memcache and configures neutron-server to use memcache for token caching. http://docs.openstack.org/releasenotes/keystonemiddleware/mitaka.html#id2 Change-Id: I747d107d28474d545e4a3612a927d46cae34e6b6