A method for sending packets. The method includes determining with which of a plurality of virtual serialization queues (VSQs) a first packet is associated, wherein a first application is attempting to issue the first packet, if a first VSQ of the plurality of VSQs has not exceeded a first bandwidth allocation, wherein the first VSQ is associated with the first packet and is associated with the first bandwidth allocation, then sending the first packet to the first VSQ, processing the first packet by a first virtual network stack (VNS) to obtain a first processed packet, wherein the first VSQ is associated with the first VNS, and sending the first processed packet to a physical network interface card (NIC) operatively connected to the first VNS. Alternatively, if the first VSQ has exceeded the first bandwidth allocation, then blocking the first application from issuing the first packet.