Comment 6 for bug 1692567

This also seem to require the network segment to be available on the host we ask for the port to bind to.

In my setup subnet0 is local using physical_network 'ctlplane', and subnet1 is a remote/non-local subnet on physical_network 'subnet1'.

(undercloud) [stack@ocataleafs ~]$ openstack network segment show subnet0
+------------------+--------------------------------------+
| Field | Value |
+------------------+--------------------------------------+
| description | None |
| id | ce07c9be-bc4a-4b56-a8fd-0176c694e175 |
| name | subnet0 |
| network_id | f19d0817-7394-4f5d-840f-e440476f05b2 |
| network_type | flat |
| physical_network | ctlplane |
| segmentation_id | None |
+------------------+--------------------------------------+
(undercloud) [stack@ocataleafs ~]$ openstack network segment show subnet1
+------------------+--------------------------------------+
| Field | Value |
+------------------+--------------------------------------+
| description | None |
| id | a93f33ae-5e07-4140-bd13-9e9a5d090031 |
| name | subnet1 |
| network_id | f19d0817-7394-4f5d-840f-e440476f05b2 |
| network_type | flat |
| physical_network | subnet1 |
| segmentation_id | None |
+------------------+--------------------------------------+

I cannot bind a port with fixed_ip in subnet1 onto this node.

(undercloud) [stack@ocataleafs ~]$ openstack port create --host ocataleafs.lab.example.com --network ctlplane --fixed-ip subnet=subnet1,ip-address=172.20.0.70 fixed-ip-subnet1

HttpException: Bad Request (HTTP 400) (Request-ID: req-e7965660-077a-4f23-8648-739245c877af), Invalid input for operation: Failed to create port on network f19d0817-7394-4f5d-840f-e440476f05b2, because fixed_ips included invalid subnet cee4e96b-0fe0-469f-b008-7f87cc793d7a.