// For instance, RBAC can be missing a role, but enough roles are still present and bound to reason about the request.
  // +optional
  optional string evaluationError = 3;
}

// SubjectRulesReviewStatus contains the result of a rules check. This check can be incomplete depending on

  // Standard object's metadata.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Rules holds all the PolicyRules for this Role
  // +optional
  repeated PolicyRule rules = 2;
}

// RoleBinding references a role, but does not contain it.  It can reference a Role in the same namespace or a ClusterRole in the global namespace.

  // Standard object's metadata.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Rules holds all the PolicyRules for this Role
  // +optional
  repeated PolicyRule rules = 2;
}

// RoleBinding references a role, but does not contain it.  It can reference a Role in the same namespace or a ClusterRole in the global namespace.

  - update
- apiGroups:
  - policy
  resources:
  - poddisruptionbudgets
  verbs:
  - '*'
- apiGroups:
  - rbac.authorization.k8s.io
  resources:
  - clusterrolebindings
  - clusterroles
  - roles
  - rolebindings
  verbs:
  - '*'
- apiGroups:
  - coordination.k8s.io
  resources:
  - leases
  verbs:
  - get
  - create
  - update
- apiGroups:
  - ""
  resources:
  - configmaps

{{/*Set up roles for Istio Gateway. Not required for gateway-api*/}}
{{- if .Values.rbac.enabled }}
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: {{ include "gateway.serviceAccountName" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "gateway.labels" . | nindent 4}}
  annotations:
    {{- .Values.annotations | toYaml | nindent 4 }}
rules:
- apiGroups: [""]
  resources: ["secrets"]

  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // Rules holds all the PolicyRules for this ClusterRole
  // +optional
  repeated PolicyRule rules = 2;

  // AggregationRule is an optional field that describes how to build the Rules for this ClusterRole.
  // If AggregationRule is set, then the Rules are controller managed and direct changes to Rules will be
  // stomped by the controller.
  // +optional

		inpodMarkRule.Family = family
		inpodMarkRule.Table = RouteTableInbound
		inpodMarkRule.Mark = InpodTProxyMark
		inpodMarkRule.Mask = InpodTProxyMask
		inpodMarkRule.Priority = 32764
		rules = append(rules, inpodMarkRule)
	}

	for _, rule := range rules {
		log.Debugf("Iterating netlink rule : %+v", rule)
		if err := f(rule); err != nil {
			return fmt.Errorf("failed to configure netlink rule: %w", err)
		}
	}

	return nil
}

- and the other end is in ztunnel's pod

and setting up iptables rules to funnel traffic thru that socket "tube" to ztunnel and back.

This effectively behaves like ztunnel is an in-pod sidecar, without actually requiring the injection of ztunnel as a sidecar into the pod manifest, or mutatating the application pod in any way.

  namespace: {{ .Values.global.istioNamespace }}
  labels:
    app: istiod
    release: {{ .Release.Name }}
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: istiod{{- if not (eq .Values.revision "")}}-{{ .Values.revision }}{{- end }}
subjects:
  - kind: ServiceAccount
    name: istiod{{- if not (eq .Values.revision "") }}-{{ .Values.revision }}{{- end }}

kind: ClusterRole
metadata:
  name: istio-reader-clusterrole{{- if not (eq .Values.revision "")}}-{{ .Values.revision }}{{- end }}-{{ .Release.Namespace }}
  labels:
    app: istio-reader
    release: {{ .Release.Name }}
rules:
  - apiGroups:
      - "config.istio.io"
      - "security.istio.io"
      - "networking.istio.io"
      - "authentication.istio.io"
      - "rbac.istio.io"
    resources: ["*"]
    verbs: ["get", "list", "watch"]