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)
}

		return ""
	}
	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() != "" {

		}
	}
	if lastUpdated.After(time.Unix(0, 0)) { // if a timestamp was obtained from a drc
		return &lastUpdated, nil
	}
	return nil, nil
}

// GetDynamicRouteDump retrieves a route dump with just dynamic active routes in it
func (w *Wrapper) GetDynamicRouteDump(stripVersions bool) (*admin.RoutesConfigDump, error) {
	routeDump, err := w.GetRouteConfigDump()
	if err != nil {
		return nil, err
	}
	drc := routeDump.GetDynamicRouteConfigs()

        "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",

			cw := &ConfigWriter{Stdout: gotOut}
			cd, _ := os.ReadFile(fmt.Sprintf("testdata/routes/%s/configdump.json", tt.name))
			if err := cw.Prime(cd); err != nil {
				t.Errorf("failed to parse config dump: %s", err)
			}
			err := cw.PrintRouteSummary(RouteFilter{Verbose: true})
			assert.NoError(t, err)

			wantOutputFile := path.Join("testdata/routes", tt.name, "output.txt")
			util.CompareContent(t, gotOut.Bytes(), wantOutputFile)
		})

  # 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"},
		Args: func(cmd *cobra.Command, args []string) error {
			if (len(args) == 1) != (configDumpFile == "") {
				cmd.Println(cmd.UsageString())

package proto

import (
	"bytes"

	"google.golang.org/protobuf/proto"

	"istio.io/istio/pkg/util/protomarshal"
)

// MessageSlice allows us to marshal slices of protobuf messages like clusters/listeners/routes/endpoints correctly
type MessageSlice []proto.Message

// MarshalJSON handles marshaling of slices of proto messages
func (pSlice MessageSlice) MarshalJSON() ([]byte, error) {
	buffer := bytes.NewBufferString("[")

	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"

func forEachLoopbackRoute(cfg *Config, f func(*netlink.Route) error) error {
	loopbackLink, err := netlink.LinkByName("lo")
	if err != nil {
		return fmt.Errorf("failed to find 'lo' link: %v", err)
	}

	// Set up netlink routes for localhost
	cidrs := []string{"0.0.0.0/0"}
	if cfg.EnableIPv6 {
		cidrs = append(cidrs, "0::0/0")
	}
	for _, fullCIDR := range cidrs {
		_, localhostDst, err := net.ParseCIDR(fullCIDR)
		if err != nil {

				return nil, err
			}
			routes = append(routes, routeTyped)
		}
	}
	if len(routes) == 0 {
		return nil, fmt.Errorf("no routes found")
	}
	sort.Slice(routes, func(i, j int) bool {
		iName, err := strconv.Atoi(routes[i].Name)
		if err != nil {
			return false
		}
		jName, err := strconv.Atoi(routes[j].Name)
		if err != nil {
			return false
		}
		return iName < jName
	})