route := &route.RouteConfiguration{}
		err = drc[i].RouteConfig.UnmarshalTo(route)
		if err != nil {
			return nil, err
		}
		sort.Slice(route.VirtualHosts, func(i, j int) bool {
			return route.VirtualHosts[i].Name < route.VirtualHosts[j].Name
		})
		drc[i].RouteConfig = protoconv.MessageToAny(route)
	}

	if stripVersions {
		for i := range drc {
			drc[i].VersionInfo = ""
			drc[i].LastUpdated = nil
		}
	}

		if err != nil {
			return err
		}
		istiodBytes.WriteString(istiod)
	}
	diff := difflib.UnifiedDiff{
		FromFile: "Istiod Routes",
		A:        difflib.SplitLines(istiodBytes.String()),
		ToFile:   "Envoy Routes",
		B:        difflib.SplitLines(envoyBytes.String()),
		Context:  c.context,
	}
	text, err := difflib.GetUnifiedDiffString(diff)
	if err != nil {
		return err
	}

 "configs": [
  {
   "@type": "type.googleapis.com/envoy.admin.v3.RoutesConfigDump",
   "static_route_configs": [
    {
     "route_config": {
      "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
      "virtual_hosts": [
       {
        "name": "backend",
        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/stats/prometheus"
          },

		t.Fatalf("Failed to create Comparator: %v", err)
	}
	err = comparator.Diff()
	if err != nil {
		t.Errorf("Unexpected error during diff: %v", err)
	}

	expected := []string{"Clusters Match", "Listeners Match", "Routes Match"}
	for _, exp := range expected {
		if !bytes.Contains(outputBuffer.Bytes(), []byte(exp)) {
			t.Errorf("Expected %s, but it was not found", exp)
		}
	}
}

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

        "ips": [
            {
                "version": "4",
                "address": "10.0.0.2/24",
                "gateway": "10.0.0.1",
                "interface": 0
            }
        ],
        "routes": []

    },
    "log_level": "debug",
    "cni_event_address": "%s",
    "ambient_enabled": %t,
    "kubernetes": {
        "k8s_api_root": "APIRoot",
        "kubeconfig": "testK8sConfig",

	}{
		{
			name: "empty-gateway",
		},
		{
			name: "istio-gateway-http-route-prefix",
		},
		{
			name: "k8s-gateway-http-route-path-prefix",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			gotOut := &bytes.Buffer{}
			cw := &ConfigWriter{Stdout: gotOut}
			cd, _ := os.ReadFile(fmt.Sprintf("testdata/routes/%s/configdump.json", tt.name))
			if err := cw.Prime(cd); err != nil {

 "configs": [
  {
   "@type": "type.googleapis.com/envoy.admin.v3.RoutesConfigDump",
   "static_route_configs": [
    {
     "route_config": {
      "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
      "virtual_hosts": [
       {
        "name": "backend",
        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/healthz/ready"
          },

 "configs": [
  {
   "@type": "type.googleapis.com/envoy.admin.v3.RoutesConfigDump",
   "static_route_configs": [
    {
     "route_config": {
      "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
      "virtual_hosts": [
       {
        "name": "backend",
        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/healthz/ready"
          },

func getLinkWithDestinationOf(ip string) (netlink.Link, error) {
	routes, err := netlink.RouteListFiltered(
		netlink.FAMILY_V4,
		&netlink.Route{Dst: &net.IPNet{IP: net.ParseIP(ip), Mask: net.CIDRMask(32, 32)}},
		netlink.RT_FILTER_DST)
	if err != nil {
		return nil, err
	}

	if len(routes) == 0 {
		return nil, fmt.Errorf("no routes found for %s", ip)
	}

	linkIndex := routes[0].LinkIndex
	return netlink.LinkByIndex(linkIndex)
}