Godzillagram /god-zil'*-gram/ n.

[from Japan's national hero] 1. A network packet that in theory is a broadcast to every machine in the universe. The typical case is an IP datagram whose destination IP address is [255.255.255.255]. Fortunately, few gateways are foolish enough to attempt to implement this case! 2. A network packet of maximum size. An IP Godzillagram has 65,536 octets. Compare super source quench, Christmas tree packet, martian.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.