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l2 neutron port

Hi OpenStack Gurus!

Do you know if it is possible to create a VM with a network interface but without an IP address in OpenStack Ocata?

That means OpenStack will not control what IP is assigned in the VM (disabled port_security) and it will also not automatically assign any IP to it. GUI/CLI/API will not show any IP on the interface.

Something like an l2 network port.

According to this blueprint "Allow Neutron Port Without IP Address" it has already been implemented but I am not able to create such VM/port. Do you have any experience with this?

My goal is to have an unmanaged provider (external) network in OpenStack. e.g. external dhcp, no IP assignment by OpenStack.