{
			Name:     "http",
			Port:     80,
			Protocol: protocol.HTTP,
		},
	}
	svc := &model.Service{
		Ports:    ports,
		Hostname: host.Name("test1"),
	}
	s.MemRegistry.AddService(svc)
	if _, err := ads.Wait(time.Second*10, watchAll...); err != nil {
		t.Fatal(err)
	}
	i := &model.ServiceInstance{
		Service:     svc,
		ServicePort: svc.Ports[0],
		Endpoint: &model.IstioEndpoint{

	sd.AddService(&model.Service{
		Hostname:       host.Name(name),
		DefaultAddress: vip,
		Ports: model.PortList{
			{
				Name:     "http-main",
				Port:     port,
				Protocol: protocol.HTTP,
			},
		},
	})
}

// AddService adds an in-memory service and notifies
func (sd *ServiceDiscovery) AddService(svc *model.Service) {
	sd.mutex.Lock()

- Fixes a bug at kube-apiserver start where APIService objects for custom resources could be deleted and recreated. ([#118104](https://github.com/kubernetes/kubernetes/pull/118104), [@liggitt](https://github.com/liggitt)) [SIG API Machinery and Testing]

* kube-apiserver: requests to endpoints handled by unavailable extension API servers (as indicated by an `Available` condition of `false` in the registered APIService) now return `503` errors instead of `404` errors. ([#58070](https://github.com/kubernetes/kubernetes/pull/58070), [@weekface](https://github.com/weekface))

			hostname := host.Name(name)
			configsUpdated.Insert(model.ConfigKey{
				Kind:      kind.ServiceEntry,
				Name:      string(hostname),
				Namespace: ns,
			})

			s.MemRegistry.AddService(&model.Service{
				Hostname:       hostname,
				DefaultAddress: "10.11.0.1",
				Ports: []*model.Port{
					{
						Name:     "http-main",
						Port:     2080,
						Protocol: protocol.HTTP,
					},

[alpha] Support ipvs mode for kube-proxy([#46580](https://github.com/kubernetes/kubernetes/pull/46580), [@haibinxie](https://github.com/haibinxie))

### API Machinery

#### kube-apiserver
* Fixed an issue with `APIService` auto-registration. This issue affected rolling restarts of HA API servers that added or removed API groups being served.([#51921](https://github.com/kubernetes/kubernetes/pull/51921))

				if err != nil {
					t.Fatal(err)
				}
				_ = s.Send(&discovery.DiscoveryRequest{})
			})
		}
	})
}

func addIstiod(sd *memory.ServiceDiscovery, xdsPort int) {
	sd.AddService(&model.Service{
		Attributes: model.ServiceAttributes{
			Name:      "istiod",
			Namespace: "istio-system",
		},
		Hostname:       host.Name(testSvcHost),
		DefaultAddress: "127.0.1.12",

    * Added metrics aggregator_openapi_v2_regeneration_count, aggregator_openapi_v2_regeneration_gauge and apiextension_openapi_v2_regeneration_count metrics counting the triggering APIService and CRDs and the reason (add, update, delete).

		},
	}
}

func makeServiceMap(fake *FakeProxier, allServices ...*v1.Service) {
	for i := range allServices {
		fake.addService(allServices[i])
	}
}

func (proxier *FakeProxier) addService(service *v1.Service) {
	proxier.serviceChanges.Update(nil, service)
}

func (proxier *FakeProxier) updateService(oldService *v1.Service, service *v1.Service) {

- Fixes server-side apply for APIService resources. ([#98576](https://github.com/kubernetes/kubernetes/pull/98576), [@kevindelgado](https://github.com/kevindelgado))