}

// MakeIP creates a fake IP address for a service and instance version
func MakeIP(service *model.Service, version int) string {
	// external services have no instances
	if service.External() {
		return ""
	}
	ipa, ise := netip.ParseAddr(service.DefaultAddress)
	if ise != nil {
		return ""
	}
	ip := ipa.As4()
	ip[2] = byte(1)
	ip[3] = byte(version)
	return netip.AddrFrom4(ip).String()

	IstioOperatorGVK = schema.GroupVersionKind{
		Version: "v1alpha1",
		Group:   "install.istio.io",
		Kind:    "IstioOperator",
	}

	// SchemeGroupVersion is group version used to register these objects
	SchemeGroupVersion = IstioOperatorGVK.GroupVersion()

	IstioOperatorGVR = schema.GroupVersionResource{
		Group:    SchemeGroupVersion.Group,
		Version:  SchemeGroupVersion.Version,
		Resource: "istiooperators",
	}

// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

		// to https://github.com/uber-go/zap/issues/328
		_ = log.Sync()
	}()

	// TODO: implement plugin version
	funcs := skel.CNIFuncs{
		Add:   plugin.CmdAdd,
		Del:   plugin.CmdDelete,
		Check: plugin.CmdCheck,
	}
	err := skel.PluginMainFuncsWithError(funcs, version.All, fmt.Sprintf("CNI plugin istio-cni %v", istioversion.Info.Version))
	if err != nil {
		log.Errorf("istio-cni failed with: %v", err)
		if err := err.Print(); err != nil {

// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

					})
			}
		}
	}
}

// installRevisionOrFail takes an Istio version and installs a revisioned control plane running that version
// provided istio version must be present in tests/integration/pilot/testdata/upgrade for the installation to succeed
func installRevisionOrFail(t framework.TestContext, version string, configs map[string]string) {

// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

		}
	}
	return nil
}

func isCRDInstalled(c cluster.Cluster, crdName string, version string) bool {
	crd, err := c.Ext().ApiextensionsV1().CustomResourceDefinitions().Get(context.TODO(), crdName, metav1.GetOptions{})
	if err == nil {
		// Found the CRD, now check against the version.
		for _, v := range crd.Spec.Versions {
			if v.Name == version {
				// The CRD is already installed on this cluster.
				return true
			}
		}

// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

// Copyright Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,