Chernobyl packet /cher-noh'b*l pak'*t/ n. A network packet that induces a broadcast storm and/or network meltdown, in memory of the April 1986 nuclear accident at Chernobyl in Ukraine. The typical scenario involves an IP Ethernet datagram that passes through a gateway with both source and destination Ether and IP address set as the respective broadcast addresses for the subnetworks being gated between. Compare {Christmas treepacket} .