log.Info("configuring host-level iptables rules (healthchecks, etc)")

	iptablesBuilder := builder.NewIptablesRuleBuilder(ipbuildConfig(cfg.cfg))

	// For easier cleanup, insert a jump into an owned chain
	// -A POSTROUTING -p tcp -j ISTIO_POSTRT
	iptablesBuilder.AppendRule(
		iptableslog.UndefinedCommand, iptablesconstants.POSTROUTING, iptablesconstants.NAT,
		"-j", ChainHostPostrouting,
	)

			// We need a pod IP - if the pod was added via the CNI plugin, that plugin told us the IPs
			// for the pod. If this is a pod added via informer, the pod should have already gone thru
			// the CNI plugin chain, and have a PodIP.
			//
			// If PodIPs exists, it is preferred, otherwise fallback to PodIP.
			//
			// If we get to this point and have a pod that really and truly has no IP in either of those,

  // Webhooks with side effects MUST implement a reconciliation system, since a request may be
  // rejected by a future step in the admission chain and the side effects therefore need to be undone.
  // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
  // sideEffects == Unknown or Some.
  optional string sideEffects = 6;

  // Acceptable values are: Unknown, None, Some, NoneOnDryRun
  // Webhooks with side effects MUST implement a reconciliation system, since a request may be
  // rejected by a future step in the admission chain and the side effects therefore need to be undone.
  // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
  // sideEffects == Unknown or Some. Defaults to Unknown.
  // +optional

                        Valid Options: LISTENER, FILTER_CHAIN, NETWORK_FILTER, HTTP_FILTER, ROUTE_CONFIGURATION, VIRTUAL_HOST, HTTP_ROUTE, CLUSTER, EXTENSION_CONFIG, BOOTSTRAP, LISTENER_FILTER
                      enum:
                      - INVALID
                      - LISTENER
                      - FILTER_CHAIN
                      - NETWORK_FILTER
                      - HTTP_FILTER

	Certificates []*CertsDump                `json:"certificates"`
}

type CertsDump struct {
	Identity  string  `json:"identity"`
	State     string  `json:"state"`
	CertChain []*Cert `json:"cert_chain"`
}

type Cert struct {
	Pem            string `json:"pem"`
	SerialNumber   string `json:"serial_number"`
	ValidFrom      string `json:"valid_from"`
	ExpirationTime string `json:"expiration_time"`

    - it will generate an iptables-save config, based on annotations/labels and other settings, and apply it.

### CmdAdd Sidecar Workflow

`CmdAdd` is triggered when there is a new pod created. This runs on the node, in a chain of CNI plugins - Istio is
run after the main CNI sets up the pod IP and networking.

1. Check k8s pod namespace against exclusion list (plugin config)

                        Valid Options: LISTENER, FILTER_CHAIN, NETWORK_FILTER, HTTP_FILTER, ROUTE_CONFIGURATION, VIRTUAL_HOST, HTTP_ROUTE, CLUSTER, EXTENSION_CONFIG, BOOTSTRAP, LISTENER_FILTER
                      enum:
                      - INVALID
                      - LISTENER
                      - FILTER_CHAIN
                      - NETWORK_FILTER
                      - HTTP_FILTER

                  }
                }
              ],
              "traffic_direction": "INBOUND",
              "internal_listener": {},
              "filter_chain_matcher": {
                "matcher_tree": {
                  "input": {
                    "name": "ip",
                    "typed_config": {

	mux.HandleFunc(pconstants.CNIAddEventPath, s.handleAddEvent)
	return s
}

func (s *CniPluginServer) Stop() {
	s.cniListenServerCancel()
}

// Start starts up a UDS server which receives events from the CNI chain plugin.
func (s *CniPluginServer) Start() error {
	if s.sockAddress == "" {
		return fmt.Errorf("no socket address provided")
	}
	log.Info("Start a listen server for CNI plugin events")