draft-ietf-6man-ndpioiana-04.txt		rfc8425.txt
	Network Working Group O. Troan		Internet Engineering Task Force (IETF) O. Troan
	Internet-Draft Cisco Systems		Request for Comments: 8425 Cisco Systems
	Updates: 4861 (if approved) April 30, 2018		Updates: 4861 July 2018
	Intended status: Standards Track		Category: Standards Track
	Expires: November 1, 2018		ISSN: 2070-1721
	IANA Considerations for IPv6 Neighbor Discovery Prefix Information		IANA Considerations for IPv6 Neighbor Discovery
	Option Flags		Prefix Information Option Flags
	draft-ietf-6man-ndpioiana-04
	Abstract		Abstract
	The Prefix Information Option in the IPv6 Neighbor Discovery Router		The Prefix Information Option (PIO) in the IPv6 Neighbor Discovery
	Advertisement message defines an 8-bit flag field with two flags		Router Advertisement message defines an 8-bit flag field; this field
	defined and the remaining 6 bits reserved (Reserved1). RFC 6275 has		has two flags defined, and the remaining 6 bits are reserved
	defined a new flag from this field without creating a IANA registry		(Reserved1). RFC 6275 defines a flag from this field without
	or updating RFC 4861. The purpose of this document is to request a		creating an IANA registry or updating RFC 4861. The purpose of this
	new IANA registry for the PIO flags. This document updates RFC 4861.		document is to create an IANA registry for the PIO flags. This
			document updates RFC 4861.
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This is an Internet Standards Track document.
	provisions of BCP 78 and BCP 79.
	Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-
	Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		This document is a product of the Internet Engineering Task Force
	and may be updated, replaced, or obsoleted by other documents at any		(IETF). It represents the consensus of the IETF community. It has
	time. It is inappropriate to use Internet-Drafts as reference		received public review and has been approved for publication by the
	material or to cite them other than as "work in progress."		Internet Engineering Steering Group (IESG). Further information on
			Internet Standards is available in Section 2 of RFC 7841.
	This Internet-Draft will expire on November 1, 2018.		Information about the current status of this document, any errata,
			and how to provide feedback on it may be obtained at
			https://www.rfc-editor.org/info/rfc8425.
	Copyright Notice		Copyright Notice
	Copyright (c) 2018 IETF Trust and the persons identified as the		Copyright (c) 2018 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
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://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
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	described in the Simplified BSD License.		described in the Simplified BSD License.
			Table of Contents
			1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
			2. Current Prefix Information Option Flags . . . . . . . . . . . 2
			3. Updates to RFC 4861 . . . . . . . . . . . . . . . . . . . . . 3
			4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
			5. Security Considerations . . . . . . . . . . . . . . . . . . . 3
			6. Normative References . . . . . . . . . . . . . . . . . . . . 4
			Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
	1. Introduction		1. Introduction
	The Prefix Information Option (PIO) in the IPv6 Neighbor Discovery		The Prefix Information Option (PIO) in the IPv6 Neighbor Discovery
	Router Advertisement defines an 8-bit flag field with two flags		Router Advertisement message defines an 8-bit flag field; this field
	defined and the remaining 6 bits reserved (Reserved1). RFC 6275 has		has two flags defined and the remaining 6 bits are reserved
	defined a new flag from this field without creating a IANA registry		(Reserved1). RFC 6275 defines a flag from this field without
	or updating RFC 4861. The purpose of this document is to to create a		creating an IANA registry or updating RFC 4861. The purpose of this
	new registry for the PIO flags.		document is to create a new registry for the PIO flags.
	2. Current Prefix Information Option flags		2. Current Prefix Information Option Flags
	Currently, the Neighbor Discovery Protocol Prefix Information Option		Currently, the Neighbor Discovery Protocol Prefix Information Option
	[RFC4861] contains the following one-bit flags defined in published		[RFC4861] contains the following one-bit flags defined in published
	RFCs:		RFCs:
	0 1 2 3 4 5 6 7		0 1 2 3 4 5 6 7
	+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+
	|L|A|R|Reserved1|		|L|A|R|Reserved1|
	+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+
	Figure 1		Figure 1: PIO Flags
	L - On-link Flag [RFC4861]		L - On-link Flag [RFC4861]
	A - Autonomous Address Configuration Flag [RFC4861]		A - Autonomous Address Configuration Flag [RFC4861]
	R - Router Address Agent Flag [RFC6275]		R - Router Address Flag [RFC6275]
	Reserved1 - Reserved		Reserved1 - Reserved
	3. Updates to RFC4861		3. Updates to RFC 4861
	This document updates Section 4.6.2 "Prefix Information" of [RFC4861]		This document updates Section 4.6.2 "Prefix Information" of [RFC4861]
	to point to the new IANA registry that is created in this document.		to point to the IANA registry that is created in this document (see
			Section 4).
	Specifically: The current list of flags in the Prefix Information		Specifically, the current list of flags in the Prefix Information
	Option can be found in IANA-TBD.		Option can be found in the "IPv6 Neighbor Discovery Prefix
			Information Option Flags" registry.
	4. IANA Considerations		4. IANA Considerations
	The IANA is requested to create a new registry for IPv6 Neighbor		IANA has created a new registry for IPv6 Neighbor Discovery Prefix
	Discovery Prefix Information Option flags. This should include the		Information Option flags. This registry includes the current flags
	current flags in the PIO option. The format for the registry is:		in the PIO. The initial contents of the registry are as follows:
	+---------------+---------------------------------+-----------+		+----------------+---------------------------------+-----------+
	| RA Option Bit | Description | Reference |		| PIO Option Bit | Description | Reference |
	+---------------+---------------------------------+-----------+		+----------------+---------------------------------+-----------+
	| 0 | L - On-link Flag | [RFC4861] |		| 0 | L - On-link Flag | [RFC4861] |
	| 1 | A - Autonomous Address | [RFC4861] |		| 1 | A - Autonomous Address | [RFC4861] |
	| | Configuration Flag | |		| | Configuration Flag | |
	| 2 | R - Router Address Flag | [RFC6275] |		| 2 | R - Router Address Flag | [RFC6275] |
	| 3-7 | Reserved | |		| 3-7 | Reserved | |
	+---------------+---------------------------------+-----------+		+----------------+---------------------------------+-----------+
	Figure 2		Figure 2: IPv6 Neighbor Discovery Prefix Information Option Flags
	The assignment of new flags in the PIO option header require		The assignment of new flags in the PIO option header requires
	Standards Action [RFC8126].		Standards Action [RFC8126].
	The registry for these flags should be added to:		The registry for these flags is available at
	http://www.iana.org/assignments/icmpv6-parameters		<http://www.iana.org/assignments/icmpv6-parameters>.
	5. Security Considerations		5. Security Considerations
	This document has no security considerations.		This document has no security considerations.
	6. Normative References		6. Normative References
	[RFC4861] Narten, T., Nordmark, E., Simpson, W., and H. Soliman,		[RFC4861] Narten, T., Nordmark, E., Simpson, W., and H. Soliman,
	"Neighbor Discovery for IP version 6 (IPv6)", RFC 4861,		"Neighbor Discovery for IP version 6 (IPv6)", RFC 4861,
	DOI 10.17487/RFC4861, September 2007,		DOI 10.17487/RFC4861, September 2007,
End of changes. 19 change blocks.
	54 lines changed or deleted		63 lines changed or added
This html diff was produced by rfcdiff 1.47. The latest version is available from http://tools.ietf.org/tools/rfcdiff/