"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)
}

	}{
		{
			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 {

	}
	return strings.Join(vh.GetDomains(), "/")
}

func describeRoutes(vh *route.VirtualHost) string {
	routes := make([]string, 0, len(vh.GetRoutes()))
	for _, route := range vh.GetRoutes() {
		routes = append(routes, describeMatch(route.GetMatch()))
	}
	return strings.Join(routes, ", ")
}

func describeMatch(match *route.RouteMatch) string {
	conds := []string{}
	if match.GetPrefix() != "" {

                          "typed_config": {
                            "@type": "type.googleapis.com/envoy.extensions.filters.http.router.v3.Router"
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            ]
          },
          "last_updated": "2023-12-26T05:57:09.902Z"

				Table:     RouteTableInbound,
				LinkIndex: loopbackLink.Attrs().Index,
			},
		}

		for _, route := range netlinkRoutes {
			log.Debugf("Iterating netlink route : %+v", route)
			if err := f(route); err != nil {
				log.Errorf("Failed to add netlink route : %+v", route)
				return fmt.Errorf("failed to add route: %v", err)
			}
		}
	}
	return nil

	endpoints configTypeURL = "type.googleapis.com/envoy.admin.v3.EndpointsConfigDump"
	clusters  configTypeURL = "type.googleapis.com/envoy.admin.v3.ClustersConfigDump"
	routes    configTypeURL = "type.googleapis.com/envoy.admin.v3.RoutesConfigDump"
	secrets   configTypeURL = "type.googleapis.com/envoy.admin.v3.SecretsConfigDump"
	ecds      configTypeURL = "type.googleapis.com/envoy.admin.v3.EcdsConfigDump"

                            }
                          },
                          {
                            "name": "envoy.filters.http.router",
                            "typed_config": {
                              "@type": "type.googleapis.com/envoy.extensions.filters.http.router.v3.Router"
                            }
                          }
                        ],
                        "http2_protocol_options": {

  istioctl proxy-config route <pod-name[.namespace]> --name 9080

  # Retrieve full route dump for route 9080
  istioctl proxy-config route <pod-name[.namespace]> --name 9080 -o json

  # Retrieve route summary without using Kubernetes API
  ssh <user@hostname> 'curl localhost:15000/config_dump' > envoy-config.json
  istioctl proxy-config routes --file envoy-config.json
`,
		Aliases: []string{"routes", "r"},