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Underlay RFCs

Published onAug 02, 2020
Underlay RFCs

You're viewing an older Release (#1) of this Pub.

  • This Release (#1) was created on Sep 02, 2020 ()
  • The latest Release (#3) was created on Jan 28, 2021 ().

RFC-0: Requests for Comment

The Underlay Requests for Comment series is expected to be a sequence of internal technical memos written for and by the Underlay working group. The hope is that URFCs will play a role similar to that of the RFCs of the working group that developed packet-switched networks. RFCs are published in a deliberately-archaic format: numbered memos, titled, dated and authored by one or more members of the working group. Underlay RFCs may be circulated in draft form before being assigned a number, but once a number is assigned, an RFC can no longer be revised. An RFC represents the authors’ considered thoughts, suggestions, understanding and opinions, as of the date of the memo. Revised versions may later be issued as a different RFC.

The Underlay working group is currently based at the MIT-affiliated Knowledge Futures Group (KFG). Membership is not closed. Although primarily intended for an internal audience, RFCs will also be distributed to other parties advising on the development of the Underlay, and they will be posted on our public website as a record of the evolution of the group’s thinking. Sam Klein will handle the logistics of assigning RFC numbers, circulating them to group members and posting them on the web site. 


RFCs discuss and describe designs, proposals, and opinions, related to the Underlay, not limited to original ideas of the author. Notes are encouraged to be timely rather than polished and philosophical positions without examples or other specifics, specific suggestions or implementation techniques without introductory or background explication, and explicit questions without any attempted answers are all acceptable. The hope is to promote and record the exchange and consideration of less than authoritative ideas.


The URFC concept was inspired by and largely copied from the description in the Network Working Group’s RFC-3, by Steve Crocker in April 1969.

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