draft-ietf-6man-enhanced-dad-13.txt		draft-ietf-6man-enhanced-dad-14.txt
	Network Working Group R. Asati		Network Working Group R. Asati
	Internet-Draft H. Singh		Internet-Draft H. Singh
	Updates: 4862, 4861, 4429 (if approved) W. Beebee		Updates: 4862, 4861, 4429 (if approved) W. Beebee
	Intended status: Standards Track C. Pignataro		Intended status: Standards Track C. Pignataro
	Expires: August 10, 2015 Cisco Systems, Inc.		Expires: September 4, 2015 Cisco Systems, Inc.
	E. Dart		E. Dart
	Lawrence Berkeley National Laboratory		Lawrence Berkeley National Laboratory
	W. George		W. George
	Time Warner Cable		Time Warner Cable
	February 6, 2015		March 3, 2015
	Enhanced Duplicate Address Detection		Enhanced Duplicate Address Detection
	draft-ietf-6man-enhanced-dad-13		draft-ietf-6man-enhanced-dad-14
	Abstract		Abstract
	IPv6 Loopback Suppression and Duplicate Address Detection (DAD) are		IPv6 Loopback Suppression and Duplicate Address Detection (DAD) are
	discussed in Appendix A of RFC4862. That specification mentions a		discussed in Appendix A of RFC4862. That specification mentions a
	hardware-assisted mechanism to detect looped back DAD messages. If		hardware-assisted mechanism to detect looped back DAD messages. If
	hardware cannot suppress looped back DAD messages, a software		hardware cannot suppress looped back DAD messages, a software
	solution is required. Several service provider communities have		solution is required. Several service provider communities have
	expressed a need for automated detection of looped back Neighbor		expressed a need for automated detection of looped back Neighbor
	Discovery (ND) messages used by DAD. This document includes		Discovery (ND) messages used by DAD. This document includes
	skipping to change at page 1, line 49		skipping to change at page 1, line 49
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at http://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on August 10, 2015.		This Internet-Draft will expire on September 4, 2015.
	Copyright Notice		Copyright Notice
	Copyright (c) 2015 IETF Trust and the persons identified as the		Copyright (c) 2015 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 3, line 10		skipping to change at page 3, line 10
	network interface of an IPv6 node for DAD. Another message involved		network interface of an IPv6 node for DAD. Another message involved
	in DAD is the Neighbor Advertisement (NA). The Enhanced DAD		in DAD is the Neighbor Advertisement (NA). The Enhanced DAD
	algorithm specified in this document focuses on detecting an NS		algorithm specified in this document focuses on detecting an NS
	looped back to the transmitting interface during the DAD operation.		looped back to the transmitting interface during the DAD operation.
	Detecting a looped back NA does not solve the looped back DAD		Detecting a looped back NA does not solve the looped back DAD
	problem. Detection of any other looped back ND messages during the		problem. Detection of any other looped back ND messages during the
	DAD operation is outside the scope of this document. This document		DAD operation is outside the scope of this document. This document
	also includes a section on Mitigation that discusses means already		also includes a section on Mitigation that discusses means already
	available to mitigate the DAD loopback problem. This document		available to mitigate the DAD loopback problem. This document
	updates RFC4861, RFC4862, and RFC4429.		updates RFC4861, RFC4862, and RFC4429. This document updates RFC
			4862 and RFC 4429 to use the enhanced-dad algorithm to detect looped
			back DAD probes. The Changes to RFC 4861 section includes an update
			to RFC 4861.
	1.1. Requirements Language		1.1. Requirements Language
	The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",		The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
	"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this		"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
	document are to be interpreted as described in [RFC2119].		document are to be interpreted as described in [RFC2119].
	1.2. Terminology		1.2. Terminology
	o DAD-failed state - Duplication Address Detection failure as		o DAD-failed state - Duplication Address Detection failure as
End of changes. 5 change blocks.
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