Laravel 5.1 server using Browsersync does not refresh the webpage

I am using a Ubuntu 14.04 development server to build Laravel projects. For every project there is a separate vhost.

When I am using Browsersync opening http://ift.tt/1Ye0pxr Browsersync UI is perfectly visible.

My project is in /var/www/myproject.com.

The website's url is: http://ift.tt/1Zx0MSa

My Gulpfile settings:

mix.browserSync(
    {
        proxy: "http://ift.tt/1Ye0Bgc",
    }
)

Browsersync UI shows this information:

Local

http://localhost:3000

External

http://ift.tt/1Zx0WJp

Proxying:

http://ift.tt/1Ye0Bgc

Current Connections

Connected browsers will be listed here.

via Chebli Mohamed