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RFC 7527: Enhanced Duplicate Address Detection

In plain English — editorial summary, not part of the RFC

IPv6 Loopback Suppression and Duplicate Address Detection (DAD) are discussed in Appendix A of RFC 4862. That specification mentions a hardware-assisted mechanism to detect looped back DAD messages. If hardware cannot suppress looped back DAD messages, a software solution is required. Several service provider communities have expressed a need for automated detection of looped back Neighbor Discovery (ND) messages used by DAD. This document includes mitigation techniques and outlines the Enhanced DAD algorithm to automate the detection of looped back IPv6 ND messages used by DAD. For network loopback tests, the Enhanced DAD algorithm allows IPv6 to self-heal after a loopback is placed and removed. Further, for certain access networks, this document automates resolving a specific duplicate address conflict. This document updates RFCs 4429, 4861, and 4862.

Document record

Document ID
RFC7527
Published
April 2015
Authors
R. Asati; H. Singh; W. Beebee; C. Pignataro; E. Dart; W. George
Status
PROPOSED STANDARD
Stream
IETF
Area
int
Pages
11
Also known as
—
Updates:
RFC 4429, RFC 4861, RFC 4862

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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