src/connectivity/overnet/examples/meta/overnet_echo.cmx

{
    "program": {
        "binary": "bin/overnet_echo"
    },
    "sandbox": {
        "services": [
            "fuchsia.mdns.Controller",
            "fuchsia.net.SocketProvider",
            "fuchsia.netemul.sync.SyncManager",
            "fuchsia.overnet.Overnet"
        ]
    }
}