Other source of information include

• MIT AI Memo 628: Chaosnet, by David A. Moon (webified here)
• A discussion in comp.protocols.tcp-ip
• Chaosnet support in bind9, the standard DNS server

Chaosnet implementations include

• Chaosnet-over-UDP for the PDP10 emulator klh10, also in Python and Common Lisp by Joe Oswald
• Chaosnet-over-TLS for the bridge program, see below
• Chaosnet-over-Ethernet (standard) for klh10, the Lambda Lisp Machine emulator LambdaDelta (and real Lisp Machines), and 4.1 BSD
• Chaosnet-over-unix-sockets for the CADR Lisp Machine emulator usim (see also here), and also in Python by Joe Oswald
• Chaosnet encapsulated in IP (standard protocol), e.g for the PDP10 implementation PDP10/X by Dave Conroy
• a bridge program for all of the above, which also includes a transport layer or NCP implementation (with a simple unix-sockets interface).
• soon(?), a Linux implementation by ams.