draft-ietf-6man-ndpioiana-02.txt   draft-ietf-6man-ndpioiana-03.txt 
Network Working Group O. Troean Network Working Group O. Troan
Internet-Draft Cisco Systems Internet-Draft Cisco Systems
Updates: 4861 (if approved) January 10, 2018 Updates: 4861 (if approved) April 29, 2018
Intended status: Standards Track Intended status: Standards Track
Expires: July 14, 2018 Expires: October 31, 2018
IPv6 ND PIO Flags IANA considerations IANA Considerations for IPv6 Neighbor Discovery Prefix Information
draft-ietf-6man-ndpioiana-02 Option Flags
draft-ietf-6man-ndpioiana-03
Abstract Abstract
The Prefix Information Option in the IPv6 Neighbor Discovery Router The Prefix Information Option in the IPv6 Neighbor Discovery Router
Advertisement defines an 8-bit flag field with two flags defined and Advertisement message defines an 8-bit flag field with two flags
the remaining 6 bits reserved (Reserved1). RFC 6275 has defined a defined and the remaining 6 bits reserved (Reserved1). RFC 6275 has
new flag from this field without creating a IANA registry or updating defined a new flag from this field without creating a IANA registry
RFC 4861. The purpose of this document is to request that IANA to or updating RFC 4861. The purpose of this document is to request a
create a new registry for the PIO flags to avoid potential conflict new IANA registry for the PIO flags. This document updates RFC 4861.
in the use of these 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 Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on July 14, 2018. This Internet-Draft will expire on October 31, 2018.
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.
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described in the Simplified BSD License. described in the Simplified BSD License.
1. Introduction 1. Introduction
The Prefix Information Option in the IPv6 Neighbor Discovery Router The Prefix Information Option (PIO) in the IPv6 Neighbor Discovery
Advertisement defines an 8-bit flag field with two flags defined and Router Advertisement defines an 8-bit flag field with two flags
the remaining 6 bits reserved (Reserved1). RFC 6275 has defined a defined and the remaining 6 bits reserved (Reserved1). RFC 6275 has
new flag from this field without creating a IANA registry or updating defined a new flag from this field without creating a IANA registry
RFC 4861. The purpose of this document is to request that IANA to or updating RFC 4861. The purpose of this document is to to create a
create a new registry for the PIO flags to avoid potential conflict new registry for the PIO flags.
in the use of these flags.
2. Current Prefix Information Option flags 2. Current Prefix Information Option flags
Currently, the NDP Prefix Information Option contains the following Currently, the Neighbor Discovery Protocol Prefix Information Option
one-bit flags defined in published RFCs: [RFC4861] contains the following one-bit flags defined in published
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
L - On-link Flag [RFC4861] L - On-link Flag [RFC4861]
skipping to change at page 2, line 44 skipping to change at page 2, line 44
R - Router Address Agent Flag [RFC6275] R - Router Address Agent Flag [RFC6275]
Reserved1 - Reserved Reserved1 - Reserved
3. Updates to RFC4861 3. Updates to RFC4861
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 new IANA registry that is created in this document.
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 IANA-TBD.
4. IANA Considerations 4. IANA Considerations
The IANA is requested to create a new registry for IPv6 ND Prefix The IANA is requested to create a new registry for IPv6 Neighbor
Information Option flags. This should include the current flags in Discovery Prefix Information Option flags. This should include the
the PIO option. The format for the registry is: current flags in the PIO option. The format for the registry is:
+---------------+---------------------------------+-----------+ +---------------+---------------------------------+-----------+
| RA Option Bit | Description | Reference | | RA 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 | |
+---------------+---------------------------------+-----------+ +---------------+---------------------------------+-----------+
Figure 2 Figure 2
The assignment of new flags in the PIO option header require The assignment of new flags in the PIO option header require
standards action. Standards Action.
The registry for these flags should be added to: The registry for these flags should be added to:
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. References 6. Normative References
6.1. 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,
<https://www.rfc-editor.org/info/rfc4861>. <https://www.rfc-editor.org/info/rfc4861>.
6.2. Informative References
[RFC6275] Perkins, C., Ed., Johnson, D., and J. Arkko, "Mobility [RFC6275] Perkins, C., Ed., Johnson, D., and J. Arkko, "Mobility
Support in IPv6", RFC 6275, DOI 10.17487/RFC6275, July Support in IPv6", RFC 6275, DOI 10.17487/RFC6275, July
2011, <https://www.rfc-editor.org/info/rfc6275>. 2011, <https://www.rfc-editor.org/info/rfc6275>.
Author's Address Author's Address
Ole Troean Ole Troan
Cisco Systems Cisco Systems
Philip Pedersens vei 1 Philip Pedersens vei 1
Lysaker 1366 Lysaker 1366
Norway Norway
Email: ot@cisco.com Email: ot@cisco.com
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