if err != nil {
		return nil, fmt.Errorf("error loading existing CNI config (JSON error): %v", err)
	}

	delete(istioMap, "cniVersion")

	var newMap map[string]any

	if _, ok := existingMap["type"]; ok {
		// Assume it is a regular network conf file
		delete(existingMap, "cniVersion")

		plugins := make([]map[string]any, 2)
		plugins[0] = existingMap
		plugins[1] = istioMap

		newMap = map[string]any{

{
  "cniVersion": "0.4.0",
  "name": "dbnet",
  "plugins": [
    {
      "args": {
        "labels": {
          "appVersion": "1.0"
        }
      },
      "bridge": "cni0",
      "dns": {
        "nameservers": [
          "10.1.0.1"
        ]
      },
      "ipam": {
        "gateway": "10.1.0.1",
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "type": "bridge"
    },
    {

{
  "cniVersion": "0.3.1",
  "name": "k8s-pod-network",
  "plugins": [
    {
      "etcd_endpoints": "http://10.110.0.136:6666",
      "ipam": {
        "type": "calico-ipam"
      },
      "kubernetes": {
        "kubeconfig": "/etc/cni/net.d/calico-kubeconfig"
      },
      "mtu": 1500,
      "plugin_log_level": "info",
      "policy": {
        "type": "k8s"
      },
      "type": "calico"
    },
    {

{
  "cniVersion": "0.3.1",
  "name": "istio-cni",
  "type": "istio-cni",
  "plugin_log_level": "__LOG_LEVEL__",
  "kubernetes": {
      "kubeconfig": "__KUBECONFIG_FILENAME__",
      "cni_bin_dir": "/path/cni/bin"
  }

{
  "cniVersion": "0.4.0",
  "name": "dbnet",
  "plugins": [
    {
      "args": {
        "labels": {
          "appVersion": "1.0"
        }
      },
      "bridge": "cni0",
      "dns": {
        "nameservers": [
          "10.1.0.1"
        ]
      },
      "ipam": {
        "gateway": "10.1.0.1",
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "type": "bridge"
    },
    {

{
  "cniVersion": "0.3.1",
  "name": "istio-cni",
  "type": "istio-cni",
  "ipam": {},
  "dns": {},
  "plugin_log_level": "debug",
  "cni_agent_run_dir": "/path/to/kubeconfig",
  "ambient_enabled": false,
  "exclude_namespaces": [
    ""
  ]

{
  "cniVersion": "0.3.1",
  "name": "k8s-pod-network",
  "plugins": [
    {
      "etcd_endpoints": "http://10.110.0.136:6666",
      "ipam": {
        "type": "calico-ipam"
      },
      "kubernetes": {
        "kubeconfig": "/etc/cni/net.d/calico-kubeconfig"
      },
      "mtu": 1500,
      "plugin_log_level": "info",
      "policy": {
        "type": "k8s"
      },
      "type": "calico"
    },
    {

{
  "cniVersion": "0.3.1",
  "name": "k8s-pod-network",
  "plugins": [
    {
      "bridge": "cni0",
      "dns": {
        "nameservers": [
          "10.1.0.1"
        ]
      },
      "ipam": {
        "gateway": "10.1.0.1",
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "name": "dbnet",
      "type": "bridge"
    },
    {
      "ambient_enabled": false,

{
  "cniVersion": "0.3.1",
  "name": "k8s-pod-network",
  "plugins": [
    {
      "addIf": "true",
      "bridge": "mybridge",
      "ipMasq": true,
      "ipam": {
        "gateway": "10.1.0.1",
        "routes": [
          {
            "dst": "0.0.0.0/0"
          }
        ],
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "isGateway": true,
      "mtu": 1460,

{
  "cniVersion": "0.3.1",
  "name": "istio-cni",
  "type": "prefix-istio-cni",
  "plugin_log_level": "debug",
  "kubernetes": {
      "kubeconfig": "/path/to/kubeconfig",
      "cni_bin_dir": "/path/cni/bin"
  }