Can not get to work new Firefox 47 / MarionetteDriver via socks proxy. Here is my code:

Proxy proxy = new Proxy();
proxy.setSocksProxy("localhost:22001");
DesiredCapabilities capability = new DesiredCapabilities();
capability.setCapability(CapabilityType.PROXY, proxy);
MarionetteDriver driver = new MarionetteDriver(capability);
driver.get("https://httpbin.org/ip");

But browser use my machine IP, not this socks. This socks proxy is absolutely working, when I set up it in Firefox 47 via Preferences -> Network manually it works fine.

How to set up socks proxy for Selenium MarionetteDriver?