Hello, I have followed the installation documentation at https://docs.openstack.org/newton/install-guide-rdo. Everything went fine. As stated at https://docs.openstack.org/newton/install-guide-rdo/launch-instance-networks-provider.html#launch-instance-networks-provider I tried to create a provider network. I succeeded with this, but I wanted to make some changes, so I have deleted it and tried to recreate it, but it fails with the following: [root at controller ~]# openstack network create --share --external \ > --provider-physical-network provider \ > --provider-network-type flat provider HttpException: Conflict [root at controller ~]# When I try the same with the neutron command, I am getting the following: [root at controller ~]# neutron net-create --shared --provider:physical_network provider \ > --provider:network_type flat provider Unable to create the flat network. Physical network provider is in use. Neutron server returns request_ids: ['req-169949d5-56c6-44e8-b5c7-d251dcf98fc2'] [root at controller ~]# Any suggestions? Thanks!