private val sinkBuffer: Buffer = sink.buffer
  private var writerClosed = false

  /** Lazily initialized on first use. */
  private var messageDeflater: MessageDeflater? = null

  // Masks are only a concern for client writers.
  private val maskKey: ByteArray? = if (isClient) ByteArray(4) else null
  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) Buffer.UnsafeCursor() else null

import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";

// Package-wide variables from generator "generated".
option go_package = "k8s.io/api/authentication/v1beta1";

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  repeated string items = 1;

  optional string apiVersion = 2;

  // Name of the referent.
  // +optional
  optional string name = 3;

  // UID of the referent.
  // +optional
  optional string uID = 4;
}

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  repeated string items = 1;

		// Whatever user has set (with --log_output_level) for 'cni-plugin', pass it down to the plugin. It will use this to determine
		// what level to use for itself.
		// This masks the fact we are doing this weird log-over-UDS to users, and allows them to configure it the same way.
		PluginLogLevel:        istiolog.LevelToString(istiolog.FindScope(constants.CNIPluginLogScope).GetOutputLevel()),

  // If request was approved, the controller will place the issued certificate here.
  // +listType=atomic
  // +optional
  optional bytes certificate = 2;
}

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  private val controlFrameBuffer = Buffer()
  private val messageFrameBuffer = Buffer()

  /** Lazily initialized on first use. */
  private var messageInflater: MessageInflater? = null

  // Masks are only a concern for server writers.
  private val maskKey: ByteArray? = if (isClient) null else ByteArray(4)
  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) null else Buffer.UnsafeCursor()

import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";

// Package-wide variables from generator "generated".
option go_package = "k8s.io/api/authorization/v1beta1";

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  repeated string items = 1;

import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";

// Package-wide variables from generator "generated".
option go_package = "k8s.io/api/authorization/v1";

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

  repeated string items = 1;

  //     -----BEGIN CERTIFICATE-----
  //     ...
  //     -----END CERTIFICATE-----
  //     )
  //
  // +listType=atomic
  // +optional
  optional bytes certificate = 2;
}

// ExtraValue masks the value so protobuf can generate
// +protobuf.nullable=true
// +protobuf.options.(gogoproto.goproto_stringer)=false
message ExtraValue {
  // items, if empty, will result in an empty slice

	dep "istio.io/istio/tools/istio-iptables/pkg/dependencies"
	iptableslog "istio.io/istio/tools/istio-iptables/pkg/log"
)

var log = scopes.CNIAgent

const (
	// INPOD marks/masks
	InpodTProxyMark      = 0x111
	InpodTProxyMask      = 0xfff
	InpodMark            = 1337 // this needs to match the inpod config mark in ztunnel.
	InpodMask            = 0xfff
	InpodRestoreMask     = 0xffffffff