[TCP/IP hackers] A DEC LSI-11 running a
particular suite of homebrewed software written by Dave Mills and
assorted co-conspirators, used in the early 1980s for Internet
protocol testbedding and experimentation. These were used as
NSFnet backbone sites in its early 56kb-line days; a few were still
active on the Internet as late as mid-1993, doing odd jobs such as
network time service.