Enhanced Duplicate Address Detection

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Publisher: IETF
Doc Type: Standard
Pages: 11
Abstract: 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.
Publication Date: 2015-04-01
Status Note: Proposed Standard
DOI: 10.17487/RFC7527
Link: https://doi.org/10.17487/RFC7527
Author(s): Rajiv Asati
Hemant Singh
Wes Beebee
Carlos Pignataro
Eli Dart
Wesley George
Keyword(s): Automated DAD

Latest version of IETF RFC 7527

Document Versions — IETF RFC 7527

▶ IETF RFC 7527 (2015-04-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 1661 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 2328 [Active*]
IETF RFC 3971 [Active*]
IETF RFC 4086 [Active*]
IETF RFC 4429 [Active*]
IETF RFC 4861 [Active*]
IETF RFC 4862 [Active*]
RFC6620 — RFC6620 EXTERNAL

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doi: 10.17487/RFC7527
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