For ports on normal networks (non-Routed Provider Networks) it is possible to change the fixed-ip of a port. When a port is on a Routed Provider Network the same operation return an error: "Invalid input for operation: IP allocation requires subnets for network." Since this is an unbound port, and the change does not move the port ip allocation to a subnet associated with a different segment this operation should succeed.
$ grep flat_networks /etc/neutron/plugins/ml2/ml2_conf.ini
flat_networks = public,mynetwork
$ openstack network create \
--provider-network-type flat \
--provider-physical-network mynetwork \
mynetwork
$ openstack subnet create \
--network mynetwork \
--network-segment $(openstack network segment list --network mynetwork -f value -c ID) \
--subnet-range 192.168.254.0/24 \
--allocation-pool start=192.168.254.10,end=192.168.254.100 \
mysubnet
$ openstack network show mynetwork -f value -c id && openstack subnet show mysubnet -f value -c id
57e622a0-3003-4d9f-b01e-c12613935265
df2cbb56-12b9-4156-8a23-36023b110b75
$ curl -s -X POST \
-H "X-Auth-Token: $(openstack token issue -f value -c id)" \
http://192.168.122.222:9696/v2.0/ports \
-d '{"port": {"name": "test-port", "network_id": "57e622a0-3003-4d9f-b01e-c12613935265", "fixed_ips": [{"subnet_id": "df2cbb56-12b9-4156-8a23-36023b110b75"}]}}' \
| python -m json.tool
{
"port": {
"admin_state_up": true,
"allowed_address_pairs": [],
"binding:host_id": "",
"binding:profile": {},
"binding:vif_details": {},
"binding:vif_type": "unbound",
"binding:vnic_type": "normal",
"created_at": "2019-09-16T11:56:06Z",
"description": "",
"device_id": "",
"device_owner": "",
"dns_assignment": [
{
"fqdn": "host-192-168-254-44.openstackgate.local.",
"hostname": "host-192-168-254-44",
"ip_address": "192.168.254.44"
}
],
"dns_domain": "",
"dns_name": "",
"extra_dhcp_opts": [],
"fixed_ips": [
{
"ip_address": "192.168.254.44",
"subnet_id": "df2cbb56-12b9-4156-8a23-36023b110b75"
}
],
"id": "84ef332d-8c48-422a-b400-0655702b1a0e",
"ip_allocation": "immediate",
"mac_address": "fa:16:3e:43:7c:fe",
"name": "test-port",
"network_id": "57e622a0-3003-4d9f-b01e-c12613935265",
"port_security_enabled": true,
"project_id": "4abf7cb77b574734adf086dfa828cd84",
"propagate_uplink_status": false,
"qos_policy_id": null,
"resource_request": null,
"revision_number": 1,
"security_groups": [
"708b5fa0-244c-46ee-9b35-30ba45a71ccf"
],
"status": "DOWN",
"tags": [],
"tenant_id": "4abf7cb77b574734adf086dfa828cd84",
"updated_at": "2019-09-16T11:56:06Z"
}
}
$ curl -s -X PUT \
-H "X-Auth-Token: $(openstack token issue -f value -c id)" \
http://192.168.122.222:9696/v2.0/ports/84ef332d-8c48-422a-b400-0655702b1a0e \
-d '{"port": {"fixed_ips": [{"ip_address": "192.168.254.100"}]}}' \
| python -m json.tool
{
"NeutronError": {
"detail": "",
"message": "Invalid input for operation: IP allocation requires subnets for network.",
"type": "InvalidInput"
}
}
The heat template below can also be used to reproduce the issue:
# Create stack with:
#
# fixed_ips:
# [{subnet: mysubnet}]
#
# Update stack with:
#
# fixed_ips:
# [{'ip_address': '192.168.254.150'}]
# Result:
# stack_status_
# input for operation: IP allocation requires subnets for network.
#
# Neutron server returns request_ids: [''req-
#
# Running the same operation on a non-Routed Provider Network succeeds.
#
heat_template_
resources:
port:
type: OS::Neutron::Port
properties:
network: mynetwork
name: test-port
fixed_ips:
# [{subnet: mysubnet}]
replaceme