RFC 5991 · PROPOSED STANDARD · 2010
MON · 27 JUL 2026
Teredo Security Updates
Overview
RFC 5991, “Teredo Security Updates”, is a Proposed Standard document published in September 2010 by D. Thaler, S. Krishnan, J. Hoagland. It updates RFC 4380. The canonical text is published by the RFC Editor.
Abstract
The Teredo protocol defines a set of flags that are embedded in every Teredo IPv6 address. This document specifies a set of security updates that modify the use of this flags field, but are backward compatible. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 5991 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
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