How do some users surf more than 4 GB in IIT BHU?

Before the commencement of the session 2017, internet used to be a limited resource for IIT(BHU). IIT Bhubaneswar used to be the Institute of Technology ( IT BHU), whose administration fall under Banaras Hindu university but it got a different stature in converting into IIT in 2012. Although, some facilities like Internet services were still under BHU administration for long.

So before 2017, there were limits on the internet usage of 4 GB and which could be accessed through LAN only and which this question asks about. But after it, IIT BHU gets its own wifi services and there is no cap on usage. Hence you can use as much data as you want once availing internet connection of college. So anyone today can surf more than 4GB in IIT BHU.