RFC 5570 · INFORMATIONAL · 2009
SUN · 14 JUN 2026
Common Architecture Label IPv6 Security Option
Overview
RFC 5570, “Common Architecture Label IPv6 Security Option”, is an Informational document published in July 2009 by M. StJohns, R. Atkinson, G. Thomas. The canonical text is published by the RFC Editor.
Abstract
This document describes an optional method for encoding explicit packet Sensitivity Labels on IPv6 packets. It is intended for use only within Multi-Level Secure (MLS) networking environments that are both trusted and trustworthy. This memo provides information for the Internet community.
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 5570 is hosted at rfc-editor.org. Available in TXT,HTML.
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