If you recall from previous chapters, IP addresses are not assigned directly to instances. Instead, an IP address is associated with a Neutron port, and this port is logically mapped to an instance or other network resource.
When a floating IP is created, it must be associated with a Neutron port. To create a floating IP from within the CLI, use the following Neutron
usage: floatingip-create [--tenant-id TENANT_ID] [--port-id PORT_ID] [--fixed-ip-address FIXED_IP_ADDRESS] [--floating-ip-address FLOATING_IP_ADDRESS] FLOATING_NETWORK
Floating IP addresses can only be used within the tenant or project in which they were created. Using...