fixup! cluster-api: Create bootstrap FIP

pkg/infrastructure/openstack/postprovision/floatingips.go

@@ -7,6 +7,7 @@ import (
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/attributestags"
 	"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/floatingips"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/networks"
 	"github.com/gophercloud/gophercloud/openstack/networking/v2/ports"
 	capo "sigs.k8s.io/cluster-api-provider-openstack/api/v1alpha7"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -37,7 +38,12 @@ func FloatingIPs(ctx context.Context, c client.Client, cluster *capo.OpenStackCl
 		return err
 	}
 
-	_, err = createAndAttachFIP(networkClient, "bootstrap", infraID, cluster.Spec.ExternalNetworkID, bootstrapPort.ID)
+	network, err := getNetworkByName(networkClient, cluster.Spec.ExternalNetworkID)
+	if err != nil {
+		return err
+	}
+
+	_, err = createAndAttachFIP(networkClient, "bootstrap", infraID, network.ID, bootstrapPort.ID)
 	if err != nil {
 		return err
 	}
@@ -68,6 +74,29 @@ func getPortForInstance(client *gophercloud.ServiceClient, instanceID string) (*
 	return &allPorts[0], nil
 }
 
+// Get a network by name
+func getNetworkByName(client *gophercloud.ServiceClient, name string) (*networks.Network, error) {
+	listOpts := networks.ListOpts{
+		Name: name,
+	}
+	allPages, err := networks.List(client, listOpts).AllPages()
+	if err != nil {
+		return nil, fmt.Errorf("failed to list networks: %w", err)
+	}
+	allNetworks, err := networks.ExtractNetworks(allPages)
+	if err != nil {
+		return nil, fmt.Errorf("failed to extract networks: %w", err)
+	}
+
+	if len(allNetworks) < 1 {
+		return nil, fmt.Errorf("found no matches for network %s", name)
+	} else if len(allNetworks) > 1 {
+		return nil, fmt.Errorf("found more than one match for network %s", name)
+	}
+
+	return &allNetworks[0], nil
+}
+
 // Create a floating IP.
 func createAndAttachFIP(client *gophercloud.ServiceClient, role, infraID, networkID, portID string) (*floatingips.FloatingIP, error) {
 	createOpts := floatingips.CreateOpts{