The undesirable transmission of multicast data packets to network ports that have not requested them. In entertainment lighting: Streaming ACN (sACN) utilizes multicast addressing where each control universe maps to a unique IP address within the 239.255.0.0 to 239.255.255.255 range. If IGMP snooping is not enabled or properly configured on the network switches: the switches default to treating this multicast traffic as broadcast. Under this default state: every universe of sACN data is flooded to every single port on the network. Because a single sACN universe consumes roughly 1 Mbps: a 100 universe show will flood approximately 100 Mbps of continuous data to every connected device. To IT infrastructure, this unmanaged traffic resembles a distributed denial of service (DDoS) attack: overloading connected devices and causing critical control latency. This is why proactive tools like QubiSet are essential to monitor switch configurations and ensure that IGMP snooping is active across the entire network.