Hi, I have a victoria cluster. And all node have two nic. Same to neutron doc[1], one nic is management interface, other is provider interface. Assuming provider network is same as the example in the Neutron deployment doc, which is the 203.0.113.0/24 with gateway 203.0.113.1. I hope use different address segment for different project. For example: project_A: 203.0.113.11,203.0.113.30 project_B: 203.0.113.31,203.0.113.60 project_C: 203.0.113.61,203.0.113.90 I am currently considering one method: Creating different VLAN networks for different projects, but it requires configuring the physical switch ports as trunks. Is there any other way to achieve this? I would prefer to use a flat network. I will appreciate for any help. Best regards, Han Guangyu [1]: https://docs.openstack.org/neutron/latest/install/environment-networking-obs...