Comment by Anonymouslemming for Try to click (+), if it won't help test via CLI : # source keystonerc_admin [root@juno1 ~(keystone_admin)]# neutron floatingip-create public Created a new floatingip: +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | fixed_ip_address | | | floating_ip_address | 192.168.1.158 | | floating_network_id | 65cbd354-daae-41bb-9d3c-e58b1062be19 | | id | 723242ca-61df-4d70-acf8-7678628b14f9 | | port_id | | | router_id | | | status | DOWN | | tenant_id | 2561f253faca48399d0cc77886574e1d | +---------------------+--------------------------------------+ Then run [root@juno1 ~(keystone_admin)]# neutron floatingip-list Make sure created floating IP is there and run [root@juno1 ~(keystone_admin)]# nova list Your instance should come up with instance-id, name , status ACTIVE. Next command [root@juno1 ~(keystone_admin)]# neutron port-list --device-id instance-id should return you port-id to be assigned floating IP [root@juno1 ~(keystone_admin)]# neutron floatingip-associate 723242ca-61df-4d70-acf8-7678628b14f9 port-id [root@juno1 ~(keystone_admin)]# neutron floatingip-show 723242ca-61df-4d70-acf8-7678628b14f9 Of course your floatingip-id ( in my case 723242ca-61df-4d70-acf8-7678628b14f9 ) would be different from mine.

The advice in this answer pointed me to the following: [https://ask.openstack.org/en/question/1980/how-to-configure-multiple-floating-ip-pools/](https://ask.openstack.org/en/question/1980/how-to-configure-multiple-floating-ip-pools/). Having created a router with an interface in private, this works.