Browsersync external Ip address not working..

Running gulp watch gives me the following:

[BS] Access URLs:
 -------------------------------------
       Local: http://localhost:3000
    External: http://192.168.56.1:3000
 -------------------------------------
          UI: http://localhost:3001
 UI External: http://192.168.56.1:3001

I'm using homestead and going to the External ip, 192.16856.1:3000 opens nothing on my mobile device. I'm trying to use the workflow explained in the latest elixir series video.

What would be a the problem?

My gulpfile:

elixir(function(mix) {
    mix.sass('app.scss')
        .browserify(['app.js', 'main.js'])
        .version(['css/app.css', 'js/bundle.js'])
        .copy('node_modules/bootstrap-sass/assets/fonts', 'public/build/fonts')
        .browserSync({proxy: 'myapp.dev'});
});