Quality of service (QoS) provisioning is an important subject for the computer networks community and, as many other problems, has been revisited under the light of Software Defined Networks (SDN), which promise flexibility and simplification of network protocols. We follow such trend in this paper, proposing a bandwidth throttling solution using the P4 framework and contrasting it with the state of the art. Our proposal showcases the simplicity and adaptability of P4-programmable switches.