redir.dnsRedirect, valErr = strconv.ParseBool(v)
		if valErr != nil {
			log.Warnf("cannot parse DNS capture environment variable %v", valErr)
		}
	}
	if v, found := pi.ProxyEnvironments["ISTIO_DUAL_STACK"]; found {
		// parse and set the bool value of dnsRedirect
		redir.dualStack, valErr = strconv.ParseBool(v)
		if valErr != nil {
			log.Warnf("cannot parse dual stack environment variable %v", valErr)
		}
	}

	pod, ns := buildFakePodAndNSForClient()
	pod.ObjectMeta.Annotations[sidecarStatusKey] = "true"
	pod.Spec.Containers = []corev1.Container{
		{
			Name: "istio-proxy",
			Env:  []corev1.EnvVar{{Name: "ISTIO_DUAL_STACK", Value: "true"}},
		}, {Name: "mockContainer"},
	}

	mockIntercept := testDoAddRun(t, buildMockConf(true), testNSName, pod, ns)

	if len(mockIntercept.lastRedirect) == 0 {