route      string
		count      int
		expected   *Route
		errStrFrag string
	}{
		{"gatewayfirst", gatewayfirst, 1, &ipv4Route, ""},
		{"gatewaymiddle", gatewaymiddle, 1, &ipv4Route, ""},
		{"gatewaylast", gatewaylast, 1, &ipv4Route, ""},
		{"no routes", nothing, 0, nil, ""},
		{"badDestination", badDestination, 0, nil, "invalid IPv4"},
		{"badGateway", badGateway, 0, nil, "invalid IPv4"},

	"istio.io/istio/pkg/kube/kclient"
	"istio.io/istio/pkg/util/istiomultierror"
)

// ClassController is a controller that creates the default Istio GatewayClass(s). This will not
// continually reconcile the full state of the GatewayClass object, and instead only create the class
// if it doesn't exist. This allows users to manage it through other means or modify it as they wish.

			return p.Spec.ServiceAccountName
		})

		// default traffic type if neither GatewayClass nor Gateway specify a type
		trafficType := constants.ServiceTraffic

		gatewayClass := ptr.OrEmpty(krt.FetchOne(ctx, GatewayClasses, krt.FilterKey(string(gateway.Spec.GatewayClassName))))
		if gatewayClass == nil {
			log.Warnf("could not find GatewayClass %s for Gateway %s/%s", gateway.Spec.GatewayClassName, gateway.Namespace, gateway.Name)

func (c *Controller) Reconcile(ps *model.PushContext) error {
	t0 := time.Now()
	defer func() {
		log.Debugf("reconcile complete in %v", time.Since(t0))
	}()
	gatewayClass := c.cache.List(gvk.GatewayClass, metav1.NamespaceAll)
	gateway := c.cache.List(gvk.KubernetesGateway, metav1.NamespaceAll)
	httpRoute := c.cache.List(gvk.HTTPRoute, metav1.NamespaceAll)

		return "EndpointSlice"
	case Endpoints:
		return "Endpoints"
	case EnvoyFilter:
		return "EnvoyFilter"
	case GRPCRoute:
		return "GRPCRoute"
	case Gateway:
		return "Gateway"
	case GatewayClass:
		return "GatewayClass"
	case HTTPRoute:
		return "HTTPRoute"
	case Ingress:
		return "Ingress"
	case IngressClass:
		return "IngressClass"
	case KubernetesGateway:
		return "Gateway"
	case Lease:

# Mismatch shows that we don't generate config for Gateways that do not match the GatewayClass
apiVersion: gateway.networking.k8s.io/v1beta1
kind: GatewayClass
metadata:
  name: istio
spec:
  controllerName: istio.io/gateway-controller
---
apiVersion: gateway.networking.k8s.io/v1beta1
kind: Gateway
metadata:
  name: gateway
  namespace: istio-system
spec:
  addresses:
  - value: istio-ingressgateway
    type: Hostname

  **Added** an environment variable for istiod `PILOT_GATEWAY_API_CONTROLLER_NAME` that allows overriding the name of the Istio Gateway API controller as exposed in the `spec.controllerName` field in the `GatewayClass` resource. The default value is `istio.io/gateway-controller`....

apiVersion: gateway.networking.k8s.io/v1beta1
kind: GatewayClass
metadata:
  name: acme-lb
spec:
  controllerName: acme.io/gateway-controller
  parametersRef:
    name: acme-lb
    group: acme.io
    kind: Parameters
---
apiVersion: gateway.networking.k8s.io/v1beta1
kind: Gateway
metadata:
  name: my-gateway
spec:
  gatewayClassName: acme-lb
  listeners:  # Use GatewayClass defaults for listener definition.
  - name: http

apiVersion: gateway.networking.k8s.io/v1beta1
kind: GatewayClass
metadata:
  name: istio
spec:
  controllerName: istio.io/gateway-controller
---
apiVersion: gateway.networking.k8s.io/v1beta1
kind: Gateway
metadata:
  name: third-party-gateway
  namespace: istio-system
spec:
  addresses:
  - value: istio-ingressgateway
    type: Hostname
  gatewayClassName: third-party-gatewayclass
  listeners:
  - name: default

	GatewayClass                   = config.GroupVersionKind{Group: "gateway.networking.k8s.io", Version: "v1beta1", Kind: "GatewayClass"}
	GatewayClass_v1alpha2          = config.GroupVersionKind{Group: "gateway.networking.k8s.io", Version: "v1alpha2", Kind: "GatewayClass"}