Comment 0 for bug 1862374

When using the command

openstack server add floating ip --fixed-ip-address 10.66.0.18 juju-53a7bc-north-0 10.245.163.125

for the following machine

ubuntu@dmzoneill-bastion:~$ openstack server list -c ID -c Name -c Networks
+--------------------------------------+--------------------------+-----------------------------------------------------------------+
| ID | Name | Networks |
+--------------------------------------+--------------------------+-----------------------------------------------------------------+
| 063c2e8e-4d57-4267-a506-4c7b336e71b6 | juju-53a7bc-north-0 | north=10.66.0.18; south=10.55.0.9 |
| 670bd827-f570-439f-b17f-9aaaa1710849 | juju-6de968-south-0 | south=10.55.0.4 |
| 0cd3c498-2826-4868-9384-e12e0799f903 | juju-855490-default-0 | dmzoneill_admin_net=10.5.0.6 |
| 0b72ccd8-b694-45c7-86be-870511426140 | juju-370447-controller-0 | north=10.66.0.14; south=10.55.0.3; dmzoneill_admin_net=10.5.0.8 |
| 40c68cb2-4e20-4d15-a82c-4c4252b8a0da | dmzoneill-bastion | dmzoneill_admin_net=10.5.0.7, 10.245.162.200 |
+--------------------------------------+--------------------------+-----------------------------------------------------------------+

Neutron returns the error

GET call to network for http://10.245.161.159:9696/v2.0/ports?device_id=063c2e8e-4d57-4267-a506-4c7b336e71b6 used request id req-d915168a-32c6-4c74-9a83-1ef090b376d8
Manager serverstack ran task network.GET.ports in 0.122786998749s
Manager serverstack running task network.PUT.floatingips
REQ: curl -g -i -X PUT http://10.245.161.159:9696/v2.0/floatingips/0c771099-ca95-4447-8a60-5f64a590d943 -H "User-Agent: osc-lib/1.9.0 keystoneauth1/3.4.0 python-requests/2.18.4 CPython/2.7.15+" -H "Content-Type: application/json" -H "X-Auth-Token: {SHA1}9cf2688baf3b5c3e5dea7e2f7faa6554ee1b6bfb" -d '{"floatingip": {"fixed_ip_address": "10.66.0.18", "port_id": "6f8626ba-ae8c-492a-93ad-3f349c600a3b"}}'
http://10.245.161.159:9696 "PUT /v2.0/floatingips/0c771099-ca95-4447-8a60-5f64a590d943 HTTP/1.1" 400 169
RESP: [400] Content-Type: application/json Content-Length: 169 X-Openstack-Request-Id: req-1a8be2ec-456e-483d-a4e0-5ab204c55c2d Date: Fri, 07 Feb 2020 14:45:13 GMT Connection: keep-alive
RESP BODY: {"NeutronError": {"message": "Bad floatingip request: Port 6f8626ba-ae8c-492a-93ad-3f349c600a3b does not have fixed ip 10.66.0.18.", "type": "BadRequest", "detail": ""}}

Neutron seems to look at the list of networks associated with server and pops the last network (south) from the list.

Enutron selects the port south 6f8626ba-ae8c-492a-93ad-3f349c600a3b which is not in that subnet and errors

ubuntu@dmzoneill-bastion:~$ openstack port list -c ID -c "Fixed IP Addresses"
+--------------------------------------+---------------------------------------------------------------------------+
| ID | Fixed IP Addresses |
+--------------------------------------+---------------------------------------------------------------------------+
| 1ad11c89-8574-49fc-9efe-b4a0b73b01eb | ip_address='10.55.0.2', subnet_id='eec9530d-df77-41eb-8e85-9ef6e45931a7' |
| 36b16756-01fe-49c7-9e14-41abaf0059f9 | ip_address='10.5.0.8', subnet_id='7edee502-ab23-46af-b446-17c233d11a94' |
| 3e20a885-6421-4acd-b936-56b3bcb4930f | ip_address='10.5.0.6', subnet_id='7edee502-ab23-46af-b446-17c233d11a94' |
| 410beab6-c2ed-4d31-bc3d-4457a3c28b5f | ip_address='10.55.0.4', subnet_id='eec9530d-df77-41eb-8e85-9ef6e45931a7' |
| 4e1defd4-1185-4f54-bb93-768dbf8d6436 | ip_address='10.66.0.14', subnet_id='fe280e59-e8e0-4cdc-923a-1b15e45b95ce' |
| 56d6a38d-0698-491b-9996-b239a7d95d5b | ip_address='10.55.0.3', subnet_id='eec9530d-df77-41eb-8e85-9ef6e45931a7' |
| 67558707-ed0b-47b6-be0e-0da0bf2871b5 | ip_address='10.66.0.2', subnet_id='fe280e59-e8e0-4cdc-923a-1b15e45b95ce' |
| 6d3c6101-75c3-47d0-a496-83cc62092f2d | ip_address='10.5.0.7', subnet_id='7edee502-ab23-46af-b446-17c233d11a94' |
| 6f8626ba-ae8c-492a-93ad-3f349c600a3b | ip_address='10.55.0.9', subnet_id='eec9530d-df77-41eb-8e85-9ef6e45931a7' |
| 778899dd-7c15-47a9-8968-261088aa14bf | ip_address='10.66.0.18', subnet_id='fe280e59-e8e0-4cdc-923a-1b15e45b95ce' |
| 7a07c64b-6d7b-4a57-b553-96459337f4cc | ip_address='10.66.0.1', subnet_id='fe280e59-e8e0-4cdc-923a-1b15e45b95ce' |
| 8ea03785-c046-4840-be82-0cd4bad5b4e8 | ip_address='10.5.0.2', subnet_id='7edee502-ab23-46af-b446-17c233d11a94' |
| cf0f0aea-e962-4ddf-ac7a-22c43ad483b0 | ip_address='10.5.0.1', subnet_id='7edee502-ab23-46af-b446-17c233d11a94' |
+--------------------------------------+---------------------------------------------------------------------------+

The work around is to use the floating ip interface

openstack floating ip set --port 778899dd-7c15-47a9-8968-261088aa14bf --fixed-ip-address 10.66.0.18 10.245.163.125

ubuntu@dmzoneill-bastion:~$ openstack server list -c ID -c Name -c Networks
+--------------------------------------+--------------------------+-----------------------------------------------------------------+
| ID | Name | Networks |
+--------------------------------------+--------------------------+-----------------------------------------------------------------+
| 063c2e8e-4d57-4267-a506-4c7b336e71b6 | juju-53a7bc-north-0 | north=10.66.0.18, 10.245.163.125; south=10.55.0.9 |
| 670bd827-f570-439f-b17f-9aaaa1710849 | juju-6de968-south-0 | south=10.55.0.4 |
| 0cd3c498-2826-4868-9384-e12e0799f903 | juju-855490-default-0 | dmzoneill_admin_net=10.5.0.6 |
| 0b72ccd8-b694-45c7-86be-870511426140 | juju-370447-controller-0 | north=10.66.0.14; south=10.55.0.3; dmzoneill_admin_net=10.5.0.8 |
| 40c68cb2-4e20-4d15-a82c-4c4252b8a0da | dmzoneill-bastion | dmzoneill_admin_net=10.5.0.7, 10.245.162.200 |
+--------------------------------------+--------------------------+-----------------------------------------------------------------+