Anyone have much luck with browser sync and external URL?

I can’t even get the UI external to work so wondering if there’s something i’m missing? Would be great to get this working!

[BS] Watching files…

gulp settings…

    gulp.task('watch', function() {
  browserSync.init({
    files: ['{lib,templates,templates-misc}/**/*.php', '*.php'],
    notify: false,
    watchTask: true,
    open:false,
    proxy: config.devUrl,
    host: "10.50.2.64",  
    snippetOptions: {
      whitelist: ['/wp-admin/admin-ajax.php'],
      blacklist: ['/wp-admin/**']
    }
  });
  gulp.watch([path.source + 'styles/**/*'], ['styles']);
  gulp.watch([path.source + 'scripts/**/*'], ['jshint', 'scripts']);
  gulp.watch([path.source + 'fonts/**/*'], ['fonts']);
  gulp.watch([path.source + 'images/**/*'], ['images']);
  gulp.watch(['bower.json', 'assets/manifest.json'], ['build']);
  });

if any other info would be helpful please let me know & any help appreciated.

D.