Well, with this app you can disable internet connection for a device on the same network. So if someone (anyone) is abusing the internet wasting precious bandwidth for a Justin Bieber videoclips you could just kill their connection and stay happy with a full bandwidth just for yourself.

A tool to kick devices out of your network and enjoy all the bandwidth for yourself. It allows you to select specific or all devices and ARP spoofs them off your local area network.

Merci pour l'idée, via https://geekz0ne.fr/shaarli/?a_jFGw