[MisterTea]

Datakit was in fact one of the early supported networks in Plan 9. You could dial into a 9 machine over datakit, mount an outward facing IP stack over your /net and your on-line: http://man.postnix.pw/plan_9_2e/3/datakit

[kjs3]

Interesting, and I suppose not surprising given the source. AT&T kept on with Datakit long after circuit switched data networking became passe.