Intermittent error during the installation process when enabling Cluster API (CAPI) in the install-config for OCP 4.16 tech preview IPI installation on top of OSP. The error occurs during the post-machine creation hook, specifically related to Floating IP association.

OCP: 4.16.0-0.nightly-2024-05-16-092402 TP enabled
on top of
OSP: RHOS-17.1-RHEL-9-20240123.n.1

The issue occurs intermittently, sometimes the installation succeeds, and other times it fails.

    1.Install OSP
    2.Initiate OCP installation with TP and CAPI enabled
    3.Observe the installation logs of the failed installation.     

    The installation fails intermittently with the following error message:
...
2024-05-17 23:37:51.590 | level=debug msg=E0517 23:37:29.833599  266622 controller.go:329] "Reconciler error" err="failed to create cluster accessor: error creating http client and mapper for remote cluster \"openshift-cluster-api-guests/ostest-4qrz2\": error creating client for remote cluster \"openshift-cluster-api-guests/ostest-4qrz2\": error getting rest mapping: failed to get API group resources: unable to retrieve the complete list of server APIs: v1: Get \"https://api.ostest.shiftstack.com:6443/api/v1?timeout=10s\": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)" controller="machine" controllerGroup="cluster.x-k8s.io" controllerKind="Machine" Machine="openshift-cluster-api-guests/ostest-4qrz2-master-0" namespace="openshift-cluster-api-guests" name="ostest-4qrz2-master-0" reconcileID="985ba50c-2a1d-41f6-b494-f5af7dca2e7b"
2024-05-17 23:37:51.597 | level=debug msg=E0517 23:37:39.838706  266622 controller.go:329] "Reconciler error" err="failed to create cluster accessor: error creating http client and mapper for remote cluster \"openshift-cluster-api-guests/ostest-4qrz2\": error creating client for remote cluster \"openshift-cluster-api-guests/ostest-4qrz2\": error getting rest mapping: failed to get API group resources: unable to retrieve the complete list of server APIs: v1: Get \"https://api.ostest.shiftstack.com:6443/api/v1?timeout=10s\": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)" controller="machine" controllerGroup="cluster.x-k8s.io" controllerKind="Machine" Machine="openshift-cluster-api-guests/ostest-4qrz2-master-0" namespace="openshift-cluster-api-guests" name="ostest-4qrz2-master-0" reconcileID="dfe5f138-ac8e-4790-948f-72d6c8631f21"
2024-05-17 23:37:51.603 | level=debug msg=Machine ostest-4qrz2-master-0 is ready. Phase: Provisioned
2024-05-17 23:37:51.610 | level=debug msg=Machine ostest-4qrz2-master-1 is ready. Phase: Provisioned
2024-05-17 23:37:51.615 | level=debug msg=Machine ostest-4qrz2-master-2 is ready. Phase: Provisioned
2024-05-17 23:37:51.619 | level=info msg=Control-plane machines are ready
2024-05-17 23:37:51.623 | level=error msg=failed to fetch Cluster: failed to generate asset "Cluster": failed to create cluster: failed during post-machine creation hook: Resource not found: [POST https://10.46.44.159:13696/v2.0/floatingips], error message: {"NeutronError": {"type": "ExternalGatewayForFloatingIPNotFound", "message": "External network 654792e9-dead-485a-beec-f3c428ef71da is not reachable from subnet d9829374-f0de-4a41-a1c0-a2acdd4841da.  Therefore, cannot associate Port 01c518a9-5d5f-42d8-a090-6e3151e8af3f with a Floating IP.", "detail": ""}}
2024-05-17 23:37:51.629 | level=info msg=Shutting down local Cluster API control plane...
2024-05-17 23:37:51.637 | level=info msg=Stopped controller: Cluster API
2024-05-17 23:37:51.643 | level=warning msg=process cluster-api-provider-openstack exited with error: signal: killed
2024-05-17 23:37:51.653 | level=info msg=Stopped controller: openstack infrastructure provider
2024-05-17 23:37:51.659 | level=info msg=Local Cluster API system has completed operations

The installation should complete successfully

featureSet: 'CustomNoUpgrade'
featureGates: ['ClusterAPIInstall=true']