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[Eugene Nikanorov <enikanorov@xxxxxxxxxxxx>]

IMO, this just needs to be documented.
Obviously ports that go first get their fixed IPs allocated and later port creation may fail if some port specifies already-allocated IP.

I don't think it makes sense to arrange input port list in anyway.

** Changed in: neutron
       Status: Confirmed => Incomplete

** Changed in: neutron
       Status: Incomplete => Opinion

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https://bugs.launchpad.net/bugs/1397087

Title:
  Bulk port create fails with conflict with some addresses fixed

Status in OpenStack Neutron (virtual network service):
  Opinion

Bug description:
  In the bulk version of the port create request, multiple port
  creations may be requested.

  If there is a port without specifying an fixed_ip address, one is
  assigned to it. If a later port requests the same address, a conflict
  is detected and raised. The overall call's succeeds or fails depending
  on which addresses from the pool are set to be assigned next, and the
  order of the requested ports.

  Steps to reproduce:

  # neutron net-create test_fixed_ports
  Created a new network:
  +---------------------------+--------------------------------------+
  | Field                     | Value                                |
  +---------------------------+--------------------------------------+
  | admin_state_up            | True                                 |
  | id                        | af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e |
  | name                      | test_fixed_ports                     |
  | provider:network_type     | vxlan                                |
  | provider:physical_network |                                      |
  | provider:segmentation_id  | 4                                    |
  | shared                    | False                                |
  | status                    | ACTIVE                               |
  | subnets                   |                                      |
  | tenant_id                 | d42d65485d674e0a9d007a06182e46f7     |
  +---------------------------+--------------------------------------+

  # neutron subnet-create test_fixed_ports 10.0.0.0/24
  Created a new subnet:
  +------------------+--------------------------------------------+
  | Field            | Value                                      |
  +------------------+--------------------------------------------+
  | allocation_pools | {"start": "10.0.0.2", "end": "10.0.0.254"} |
  | cidr             | 10.0.0.0/24                                |
  | dns_nameservers  |                                            |
  | enable_dhcp      | True                                       |
  | gateway_ip       | 10.0.0.1                                   |
  | host_routes      |                                            |
  | id               | 5369fb82-8ff6-4ec5-acf7-1d86d0ec9d2a       |
  | ip_version       | 4                                          |
  | name             |                                            |
  | network_id       | af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e       |
  | tenant_id        | d42d65485d674e0a9d007a06182e46f7           |
  +------------------+--------------------------------------------+

  # cat ports.data
  {"ports": [
      {
          "name": "A",
          "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e"
      }, {
          "fixed_ips": [{"ip_address": "10.0.0.2"}],
          "name": "B",
          "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e"
      }
  ]}

  # TOKEN='a valid keystone token'

  # curl  -H 'Content-Type: application/json' -H 'X-Auth-Token: '$TOKEN -X POST "http://127.0.1.1:9696/v2.0/ports"; -d@xxxxxxxxxx
  {"NeutronError": {"message": "Unable to complete operation for network af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e. The IP address 10.0.0.2 is in use.", "type": "IpAddressInUse", "detail": ""}}

  Positive case:

  # cat ports.data.rev
  {"ports": [
      {
          "name": "A",
          "fixed_ips": [{"ip_address": "10.0.0.2"}],
          "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e"
      }, {
          "name": "B",
          "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e"
      }
  ]}

  # curl  -H 'Content-Type: application/json' -H 'X-Auth-Token: '$TOKEN -X POST "http://127.0.1.1:9696/v2.0/ports"; -d@xxxxxxxxxxxxxx
  {"ports": [{"status": "DOWN", "binding:host_id": "", "name": "A", "admin_state_up": true, "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e", "tenant_id": "7b3e2f49d1fc4154ac5af10a4b9862c5", "binding:vif_details": {}, "binding:vnic_type": "normal", "binding:vif_type": "unbound", "device_owner": "", "mac_address": "fa:16:3e:16:1e:50", "binding:profile": {}, "fixed_ips": [{"subnet_id": "5369fb82-8ff6-4ec5-acf7-1d86d0ec9d2a", "ip_address": "10.0.0.2"}], "id": "75f5cdb7-5884-4583-9db1-73b946f94a04", "device_id": ""}, {"status": "DOWN", "binding:host_id": "", "name": "B", "admin_state_up": true, "network_id": "af3b3cc8-b556-4604-a4fe-ae9bffa8cd9e", "tenant_id": "7b3e2f49d1fc4154ac5af10a4b9862c5", "binding:vif_details": {}, "binding:vnic_type": "normal", "binding:vif_type": "unbound", "device_owner": "", "mac_address": "fa:16:3e:8a:15:7f", "binding:profile": {}, "fixed_ips": [{"subnet_id": "5369fb82-8ff6-4ec5-acf7-1d86d0ec9d2a", "ip_address": "10.0.0.3"}], "id": "0e04e694-e573-474f-9c01-979c4967bdf8", "device_id": ""}]}

  Both versions would succeed if an address other than 10.0.0.2 were
  chosen.

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