--- features: - | Add a new flag to explicitly enable provider networks, i.e. networks where instances directly connect to the physical networks (flat, VLAN). In such cases external bridges must be configured on compute nodes, like it is done for self-service (tenant manageable) networks in DVR mode. Otherwise this flag allows to avoid unnecessary interface and bridge setup on compute nodes in case of tenant networks in non-DVR mode. upgrade: - | By default this flag is disabled. If provider networks were used in previous releases, please set ``enable_neutron_provider_networks`` property to 'yes'.