Internet Architecture Board

RFC2850

RFC 9170 on Long-Term Viability of Protocol Extension Mechanisms

The IAB has published RFC 9170: Long-Term Viability of Protocol Extension Mechanisms.

Abstract: The ability to change protocols depends on exercising the extension and version-negotiation mechanisms that support change.  This document explores how regular use of new protocol features can ensure that it remains possible to deploy changes to a protocol. Examples are given where lack of use caused changes to be more difficult or costly.

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