Hi Team We are planning openstack-ansible upgrade from Yoga to Zed. Distribution:openstack-ansible Release: Yoga OS - Ubuntu 20.04 I was checking the release notes and can see below point related to neutron linux bridge. We are having linux bridge at the moment. https://docs.openstack.org/releasenotes/openstack-ansible/zed.html =========================================================== - With marking ML2/LinuxBridge driver as ‘Experimental’ in the upstream Neutron project OpenStack-Ansible has switched a default mechanism driver to ML2/OVN. In order to upgrade any existing deployment that was relying on defaults to the new OpenStack-Ansible version you must ensure that following variables are defined explicitly to ensure parity with existing functionality: neutron_plugin_type: ml2.lxbneutron_ml2_drivers_type: "flat,vlan,vxlan,local"neutron_plugin_base: - router - metering Failure to define any of these variables will result in playbook failures and neutron misconfiguration. We have covered this step with upgrade script that will create a user_neutron_migration.yml file with assumed defaults. =================================================== As per above point we need to add new parameters into user_variables file . also it is written "We have covered this step with upgrade script" *Current Configuration:* /etc/neutron/plugins/ml2# *cat ml2_conf.ini* [ml2] type_drivers = flat,vlan,vxlan,local tenant_network_types = vxlan,flat *mechanism_drivers = linuxbridge,l2population* # ML2 flat networks extension_drivers = port_security,subnet_dns_publish_fixed_ip *user_variable file* only has below related parameters : neutron_l2_population: true neutron_plugin_base: - router - neutron_dynamic_routing.services.bgp.bgp_plugin.BgpPlugin neutron_ml2_conf_ini_overrides: ml2: extension_drivers: - port_security - subnet_dns_publish_fixed_ip Can someone please confirm what should be done to take care of above point of the release notes? Regards