by Darius Kazemi, April 14 2019
A reserved link
RFC-104 is titled “Link 191”. It's authored by Jon Postel and Steve Crocker, dated Feburary 25th, 1971.
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The technical content
This is a very short RFC. Postel and Crocker are letting everyone know that link 191 will henceforth be used for measuring network traffic. Anyone who wants to use that physical link will need to get permission from the Network Measurement Center..