RFC 8701 · INFORMATIONAL · 2020
SUN · 14 JUN 2026
Applying Generate Random Extensions And Sustain Extensibility to TLS Extensibility
Overview
RFC 8701, “Applying Generate Random Extensions And Sustain Extensibility to TLS Extensibility”, is an Informational document published in January 2020 by D. Benjamin. The canonical text is published by the RFC Editor.
Abstract
This document describes GREASE (Generate Random Extensions And Sustain Extensibility), a mechanism to prevent extensibility failures in the TLS ecosystem. It reserves a set of TLS protocol values that may be advertised to ensure peers correctly handle unknown values.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 8701 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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