echo wget is not installed.

  echo Error: curl is not installed or does not support https, wget is not installed. \
       Cannot download envoy. Please install wget or add support of https to curl.
  exit 1
}

# Params:
#   $1: The URL of the ztunnel binary to be downloaded.
#   $2: The full path of the output binary.
#   $3: Non-versioned name to use
function download_ztunnel_if_necessary () {
  if [[ -f "$2" ]]; then
    return

        - it connects to K8S using the kubeconfig and JWT token copied from install-cni to get Pod and Namespace. Since this is a short-running command, each invocation creates a new connection.
        - If so, calls `istio-iptables` with params to setup pod netns
        - If ambient, sets up the ambient logic.

- `istio-iptables`
    - sets up iptables to redirect a list of ports to the port envoy will listen
    - shared code with istio-init container

message DaemonSetUpdateStrategy {
  // Type of daemon set update. Can be "RollingUpdate" or "OnDelete". Default is RollingUpdate.
  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.

                    "typed_config": {
                      "@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext",
                      "common_tls_context": {
                        "tls_params": {
                          "tls_minimum_protocol_version": "TLSv1_3",
                          "tls_maximum_protocol_version": "TLSv1_3"
                        },
                        "alpn_protocols": [

                  "typed_config": {
                    "@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext",
                    "common_tls_context": {
                      "tls_params": {
                        "tls_minimum_protocol_version": "TLSv1_2",
                        "tls_maximum_protocol_version": "TLSv1_3"
                      },
                      "alpn_protocols": [

func parseConfig(stdin []byte) (*Config, error) {
	conf := Config{}

	if err := json.Unmarshal(stdin, &conf); err != nil {
		return nil, fmt.Errorf("failed to parse network configuration: %v", err)
	}

	log.Debugf("istio-cni: Config is: %+v", conf)
	// Parse previous result. Remove this if your plugin is not chained.
	if conf.RawPrevResult != nil {
		resultBytes, err := json.Marshal(conf.RawPrevResult)
		if err != nil {

message DaemonSetUpdateStrategy {
  // Type of daemon set update. Can be "RollingUpdate" or "OnDelete". Default is RollingUpdate.
  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.

message DaemonSetUpdateStrategy {
  // Type of daemon set update. Can be "RollingUpdate" or "OnDelete".
  // Default is OnDelete.
  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.

                    "typed_config": {
                      "@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext",
                      "common_tls_context": {
                        "tls_params": {
                          "tls_minimum_protocol_version": "TLSv1_3",
                          "tls_maximum_protocol_version": "TLSv1_3"
                        },
                        "alpn_protocols": [

          "typed_config": {
           "@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext",
           "common_tls_context": {
            "tls_params": {
             "tls_minimum_protocol_version": "TLSv1_2",
             "tls_maximum_protocol_version": "TLSv1_3",
             "cipher_suites": [
              "ECDHE-ECDSA-AES256-GCM-SHA384",