bin/network_time/meta/network_time.cmx

{
    "program": {
        "binary": "bin/app"
    },
    "sandbox": {
        "services": [
            "fuchsia.logger.LogSink",
            "fuchsia.net.LegacySocketProvider"
        ],
        "dev": [ "class/rtc/000" ]
    }
}