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Shepherd writeup

# Document Shepherd

Sara Dickinson

# Technical Summary

This document performs a detailed review of the history of both specification
activities in the IETF of transient numeric identifiers, and the implementation
of the resulting RFCs. It analyses how the security and privacy properties of
the resulting protocols and various implementations have evolved over time, and
highlights that in some cases the same sub-optimal patterns have occurred for
different identifiers. It servers as a motivational document for two other
drafts, I-D.irtf-pearg-numeric-ids-generation and
I-D.gont-numeric-ids-sec-considerations which provide guidance on how to
improve the process in future.

# Document Quality

The document was initially published in 2016, and has received a variety of
reviews following presentation in the SEC area and in SECDISPATCH at different
times. It underwent multiple revisions before being presented to PEARG in July
2019 where it was adopted in August 2019. It has received several further
reviews from the PEARG members and passed RGLC in December 2020.

Note that the nits tool shows many obsoleted references, but this it to
expected given the nature of the document as a review article.