- [Multi-platform](#multi-platform)
      - [Cloud Providers](#cloud-providers)
    - [Network](#network)
      - [network-policy](#network-policy)
      - [kube-proxy ipvs mode](#kube-proxy-ipvs-mode)
    - [API Machinery](#api-machinery)
      - [kube-apiserver](#kube-apiserver)
      - [Dynamic Admission Control](#dynamic-admission-control)
      - [Custom Resource Definitions (CRDs)](#custom-resource-definitions-crds)

	if err != nil {
		r.defaultNamespace = v1.NamespaceDefault
		return
	}

	// If a specific context was specified, use that. Otherwise, just use the current context from the kube config.
	selectedContext := config.CurrentContext
	if *r.configContext != "" {
		selectedContext = *r.configContext
	}

	// Use the namespace associated with the selected context as default, if the context has one

scope: WORKLOAD_SELECTOR
```

The above policies reject unauthenticated traffic at the ztunnel unless its destination is port 9090. For more complete examples, read through the [test cases](../../pilot/pkg/serviceregistry/kube/controller/ambientindex_test.go) in the `TestRBACConvert` function.

## PeerAuthentication and the Waypoint Proxy

           "typed_config": {
            "@type": "type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy",
            "stat_prefix": "outbound|53||kube-dns.kube-system.svc.cluster.local",
            "cluster": "outbound|53||kube-dns.kube-system.svc.cluster.local"
           }
          }
         ]
        }
       ],
       "traffic_direction": "OUTBOUND",
       "bind_to_port": false
      },

	"k8s.io/client-go/rest/fake"
	cmdtesting "k8s.io/kubectl/pkg/cmd/testing"
	cmdutil "k8s.io/kubectl/pkg/cmd/util"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/pilot/test/util"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/test/util/assert"
)

type execTestCase struct {
	execClientConfig map[string][]byte
	args             []string

	// Typically use one of the three

	HostProbeSNATIPV6 = netip.MustParseAddr(env.RegisterStringVar("HOST_PROBE_SNAT_IPV6", DefaultHostProbeSNATIPV6, "").Get())
)

const (
	// to reliably identify kubelet healthprobes from inside the pod (versus standard kube-proxy traffic,
	// since the IP is normally the same), we SNAT identified host probes in the host netns to a fixed
	// APIPA/"link-local" IP.
	//

workloads can talk with each other and obey the Istio configuration resources, but each environment
can use different Istio versions and different configuration defaults.

`istioctl kube-inject` or the automatic sidecar injector are used to select the environment.
In the case of the sidecar injector, the namespace label `istio-env: <NAME_OF_ENV>` is used instead

/pkg/keepalive/                                                  @istio/wg-networking-maintainers
/pkg/monitoring/                                                 @istio/wg-networking-maintainers @istio/wg-policies-and-telemetry-maintainers
/pkg/kube/                                                       @istio/wg-networking-maintainers
/pkg/mcp/                                                        @istio/wg-networking-maintainers

	"path/filepath"
	"testing"

	"istio.io/istio/cni/pkg/config"
	testutils "istio.io/istio/pilot/test/util"
)

const (
	k8sServiceHost = "10.96.0.1"
	k8sServicePort = "443"
	kubeCAFilepath = "testdata/kube-ca.crt"
	saToken        = "service_account_token_string"
)

func TestCreateValidKubeconfigFile(t *testing.T) {
	tmp := t.TempDir()
	os.WriteFile(filepath.Join(tmp, "token"), []byte(saToken), 0o644)
	cases := []struct {

	PodNamespace string
	IPs          []IPConfig
}

// IPConfig contains an interface/gateway/address combo defined for a newly-started pod by CNI.
// This is "from the horse's mouth" so to speak and will be populated before Kube is informed of the
// pod IP.
type IPConfig struct {
	Interface *int
	Address   net.IPNet
	Gateway   net.IP
}

type CniPluginServer struct {
	cniListenServer       *http.Server