draft-ietf-dhc-dhcpv6-solmaxrt-update-05.txt   rfc7083.txt 
dhc R. Droms Internet Engineering Task Force (IETF) R. Droms
Internet-Draft Cisco Systems Request for Comments: 7083 Cisco Systems
Updates: 3315 (if approved) September 14, 2013 Updates: 3315 November 2013
Intended status: Standards Track Category: Standards Track
Expires: March 18, 2014 ISSN: 2070-1721
Modification to Default Values of SOL_MAX_RT and INF_MAX_RT Modification to Default Values of SOL_MAX_RT and INF_MAX_RT
draft-ietf-dhc-dhcpv6-solmaxrt-update-05
Abstract Abstract
This document updates RFC 3315 by redefining the default values for This document updates RFC 3315 by redefining the default values for
SOL_MAX_RT and INF_MAX_RT, and defining options through which a SOL_MAX_RT and INF_MAX_RT and defining options through which a DHCPv6
DHCPv6 server can override the client's default value for SOL_MAX_RT server can override the client's default value for SOL_MAX_RT and
and INF_MAX_RT with new values. INF_MAX_RT with new values.
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 http://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 5741.
This Internet-Draft will expire on March 18, 2014. Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7083.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2013 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 2, line 11 skipping to change at page 2, line 11
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 Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2 2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2
3. Updates to SOL_MAX_RT and INF_MAX_RT in RFC 3315 . . . . . . 2 3. Updates to SOL_MAX_RT and INF_MAX_RT in RFC 3315 . . . . . . 2
4. SOL_MAX_RT option . . . . . . . . . . . . . . . . . . . . . . 3 4. SOL_MAX_RT option . . . . . . . . . . . . . . . . . . . . . . 3
5. INF_MAX_RT option . . . . . . . . . . . . . . . . . . . . . . 4 5. INF_MAX_RT Option . . . . . . . . . . . . . . . . . . . . . . 4
6. Updates for SOL_MAX_RT and INF_MAX_RT options to RFC 3315 . . 5 6. Updates for SOL_MAX_RT and INF_MAX_RT Options to RFC 3315 . . 4
7. DHCPv6 Client Behavior . . . . . . . . . . . . . . . . . . . 6 7. DHCPv6 Client Behavior . . . . . . . . . . . . . . . . . . . 5
8. DHCPv6 Server Behavior . . . . . . . . . . . . . . . . . . . 6 8. DHCPv6 Server Behavior . . . . . . . . . . . . . . . . . . . 6
9. DHCPv6 Relay Agent Behavior Text . . . . . . . . . . . . . . 7 9. DHCPv6 Relay Agent Behavior . . . . . . . . . . . . . . . . . 6
10. Security Considerations . . . . . . . . . . . . . . . . . . . 7 10. Security Considerations . . . . . . . . . . . . . . . . . . . 6
11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 7 11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 7
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7 12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
13. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 13. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
13.1. Normative References . . . . . . . . . . . . . . . . . . 8 13.1. Normative References . . . . . . . . . . . . . . . . . . 7
13.2. Informative References . . . . . . . . . . . . . . . . . 8 13.2. Informative References . . . . . . . . . . . . . . . . . 7
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction 1. Introduction
Section 5.5 of the DHCPv6 specification [RFC3315] defines the default Section 5.5 of the DHCPv6 specification [RFC3315] defines the default
values of SOL_MAX_RT and INF_MAX_RT to be 120 seconds. In some values of SOL_MAX_RT and INF_MAX_RT to be 120 seconds. In some
circumstances, these defaults will lead to an unacceptably high circumstances, these defaults will lead to an unacceptably high
volume of aggregated traffic at a DHCPv6 server. volume of aggregated traffic at a DHCPv6 server.
The change to SOL_MAX_RT is in response to DHCPv6 message rates The change to SOL_MAX_RT is in response to DHCPv6 message rates
observed at a DHCPv6 server in a deployment in which many DHCPv6 observed on a DHCPv6 server in a deployment in which many DHCPv6
clients are sending Solicit messages but the DHCPv6 server has been clients are sending Solicit messages, but the DHCPv6 server has been
configured not to respond to those Solicit messages. While no configured not to respond to those Solicit messages. While no
explicit observations of traffic due to INF_MAX_RT have been explicit observations of traffic due to INF_MAX_RT have been
conducted, this document updates INF_MAX_RT for consistency with conducted, this document updates INF_MAX_RT for consistency with
SOL_MAX_RT. SOL_MAX_RT.
2. Requirements Language 2. 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 RFC 2119 [RFC2119]. document are to be interpreted as described in RFC 2119 [RFC2119].
3. Updates to SOL_MAX_RT and INF_MAX_RT in RFC 3315 3. Updates to SOL_MAX_RT and INF_MAX_RT in RFC 3315
This document changes section 5.5 of RFC 3315 as follows: This document changes Section 5.5 of RFC 3315 as follows:
OLD: OLD:
SOL_MAX_RT 120 secs Max Solicit timeout value SOL_MAX_RT 120 secs Max Solicit timeout value
NEW: NEW:
SOL_MAX_RT 3600 secs Max Solicit timeout value SOL_MAX_RT 3600 secs Max Solicit timeout value
OLD: OLD:
INF_MAX_RT 120 secs Max Information-request timeout value INF_MAX_RT 120 secs Max Information-request timeout value
NEW: NEW:
SOL_MAX_RT 3600 secs Max Information-request timeout value INF_MAX_RT 3600 secs Max Information-request timeout value
With this change, a DHCPv6 client that does not receive a With this change, a DHCPv6 client that does not receive a
satisfactory response will send Solicit or Information-request satisfactory response will send Solicit or Information-request
messages with the same initial frequency and exponential backoff as messages with the same initial frequency and exponential backoff as
specified in sections 17.1.2 and 18.1.5 of RFC 3315. However, the specified in Sections 17.1.2 and 18.1.5 of RFC 3315. However, the
long term behavior of these DHCPv6 clients will be to send a Solicit long-term behavior of these DHCPv6 clients will be to send a Solicit
or Information-request message every 3600 seconds rather than every or Information-request message every 3600 seconds rather than every
120 seconds, significantly reducing the aggregated traffic at the 120 seconds, significantly reducing the aggregated traffic at the
DHCPv6 server. DHCPv6 server.
4. SOL_MAX_RT option 4. SOL_MAX_RT option
A DHCPv6 server sends the SOL_MAX_RT option to a client to override A DHCPv6 server sends the SOL_MAX_RT option to a client to override
the default value of SOL_MAX_RT. The value of SOL_MAX_RT in the the default value of SOL_MAX_RT. The value of SOL_MAX_RT in the
option replaces the default value defined in Section 3. One use for option replaces the default value defined in Section 3. One use for
the SOL_MAX_RT option is to set a longer value for SOL_MAX_RT, which the SOL_MAX_RT option is to set a longer value for SOL_MAX_RT, which
skipping to change at page 4, line 13 skipping to change at page 3, line 39
The format of the SOL_MAX_RT option is: The format of the SOL_MAX_RT option is:
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| option-code | option-len | | option-code | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SOL_MAX_RT value | | SOL_MAX_RT value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
option-code OPTION_SOL_MAX_RT (TBD). option-code OPTION_SOL_MAX_RT (82)
option-len 4. option-len 4
SOL_MAX_RT value Overriding value for SOL_MAX_RT SOL_MAX_RT value Overriding value for SOL_MAX_RT
in seconds; MUST be in range: in seconds; MUST be in range:
60 <= "value" <= 86400 (1 day) 60 <= "value" <= 86400 (1 day)
Figure 1: SOL_MAX_RT option format Figure 1: SOL_MAX_RT Option Format
5. INF_MAX_RT option 5. INF_MAX_RT Option
A DHCPv6 server sends the INF_MAX_RT option to a client to override A DHCPv6 server sends the INF_MAX_RT option to a client to override
the default value of INF_MAX_RT. The value of INF_MAX_RT in the the default value of INF_MAX_RT. The value of INF_MAX_RT in the
option replaces the default value defined in Section 3. One use for option replaces the default value defined in Section 3. One use for
the INF_MAX_RT option is to set a longer value for INF_MAX_RT, which the INF_MAX_RT option is to set a longer value for INF_MAX_RT, which
reduces the Information-Request traffic from a client that has not reduces the Information-request traffic from a client that has not
received a response to its Information-Request messages. received a response to its Information-request messages.
The format of the INF_MAX_RT option is: The format of the INF_MAX_RT option is:
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| option-code | option-len | | option-code | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| INF_MAX_RT value | | INF_MAX_RT value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
option-code OPTION_INF_MAX_RT (TBD). option-code OPTION_INF_MAX_RT (83)
option-len 4. option-len 4
INF_MAX_RT value Overriding value for INF_MAX_RT INF_MAX_RT value Overriding value for INF_MAX_RT
in seconds; MUST be in range: in seconds; MUST be in range:
60 <= "value" <= 86400 (1 day) 60 <= "value" <= 86400 (1 day)
Figure 2: INF_MAX_RT option format Figure 2: INF_MAX_RT Option Format
6. Updates for SOL_MAX_RT and INF_MAX_RT options to RFC 3315 6. Updates for SOL_MAX_RT and INF_MAX_RT Options to RFC 3315
Update to RFC 3315, section 17.1.3: Update to RFC 3315, Section 17.1.3:
OLD: OLD:
The client MUST ignore any Advertise message that includes a Status The client MUST ignore any Advertise message that includes a Status
Code option containing the value NoAddrsAvail, with the exception Code option containing the value NoAddrsAvail, with the exception
that the client MAY display the associated status message to the that the client MAY display the associated status message to the
user. user.
NEW: NEW:
The client MUST ignore any Advertise message that includes a Status The client MUST ignore any Advertise message that includes a Status
Code option containing the value NoAddrsAvail, with the exception Code option containing the value NoAddrsAvail, with the exception
that the client MUST process an included SOL_MAX_RT option and MUST that the client MUST process an included SOL_MAX_RT option, MUST
process an included INF_MAX_RT option and MAY display the associated process an included INF_MAX_RT option, and MAY display the
status message to the user. associated status message to the user.
Update to RFC 3315, section 17.2.2: Update to RFC 3315, Section 17.2.2:
OLD: OLD:
If the server will not assign any addresses to any IAs in a If the server will not assign any addresses to any IAs in a
subsequent Request from the client, the server MUST send an subsequent Request from the client, the server MUST send an
Advertise message to the client that includes only a Status Code Advertise message to the client that includes only a Status Code
option with code NoAddrsAvail and a status message for the user, a option with code NoAddrsAvail and a status message for the user, a
Server Identifier option with the server's DUID, and a Client Server Identifier option with the server's DUID, and a Client
Identifier option with the client's DUID. Identifier option with the client's DUID.
NEW: NEW:
If the server will not assign any addresses to any IAs in a If the server will not assign any addresses to any IAs in a
subsequent Request from the client, the server MUST send an subsequent Request from the client, the server MUST send an Advertise
Advertise message to the client that includes only a Status Code message to the client that includes only a Status Code option with
option with code NoAddrsAvail and a status message for the user, a code NoAddrsAvail and a status message for the user, a Server
Server Identifier option with the server's DUID, a Client Identifier option with the server's DUID, a Client Identifier option
Identifier option with the client's DUID and (optionally) with the client's DUID, and (optionally) SOL_MAX_RT and/or INF_MAX_RT
SOL_MAX_RT and/or INF_MAX_RT options. options.
Add text to the end of section 14, clarifying client behavior while Update to RFC 3315, Section 14 (Add text, clarifying client behavior
waiting for a response from a server: while waiting for a response from a server):
NEW: NEW:
A client is not expected to listen for a response during the entire A client is not expected to listen for a response during the entire
period between transmission of Solicit or Information-Request period between transmission of Solicit or Information-request
messages. messages.
7. DHCPv6 Client Behavior 7. DHCPv6 Client Behavior
A DHCPv6 client MUST include the SOL_MAX_RT option code in any Option A DHCPv6 client MUST include the SOL_MAX_RT option code in any Option
Request option [RFC3315] it sends as required by RFC 3315. Request option [RFC3315] it sends as required by RFC 3315.
A DHCPv6 client MUST include the INF_MAX_RT option code in any Option A DHCPv6 client MUST include the INF_MAX_RT option code in any Option
Request option it sends as required by RFC 3315. Request option it sends as required by RFC 3315.
A DHCPv6 client MUST silently ignore any SOL_MAX_RT or INF_MAX_RT A DHCPv6 client MUST silently ignore any SOL_MAX_RT or INF_MAX_RT
option values that are less than 60 or more than 86400. option values that are less than 60 or more than 86400.
If a DHCPv6 client receives a message containing a SOL_MAX_RT option If a DHCPv6 client receives a message containing a SOL_MAX_RT option
containing a valid value for SOL_MAX_RT, the client MUST set its that has a valid value for SOL_MAX_RT, the client MUST set its
internal SOL_MAX_RT parameter to the value contained in the internal SOL_MAX_RT parameter to the value contained in the
SOL_MAX_RT option. This value of SOL_MAX_RT is then used by the SOL_MAX_RT option. This value of SOL_MAX_RT is then used by the
retransmission mechanism defined in sections 17.1.2 and 14 of RFC retransmission mechanism defined in Sections 14 and 17.1.2 of RFC
3315. 3315.
If a DHCPv6 client receives a message containing a INF_MAX_RT option If a DHCPv6 client receives a message containing an INF_MAX_RT option
containing a valid value for INF_MAX_RT, the client MUST set its that has a valid value for INF_MAX_RT, the client MUST set its
internal INF_MAX_RT parameter to the value contained in the internal INF_MAX_RT parameter to the value contained in the
INF_MAX_RT option. This value of INF_MAX_RT is then used by the INF_MAX_RT option. This value of INF_MAX_RT is then used by the
retransmission mechanism defined in sections 18.1.5 and 14 of RFC retransmission mechanism defined in Sections 14 and 18.1.5 of RFC
3315. 3315.
Updated SOL_MAX_RT and INF_MAX_RT values apply only to the network
interface on which the client received SOL_MAX_RT and/or INF_MAX_RT
options.
8. DHCPv6 Server Behavior 8. DHCPv6 Server Behavior
Sections 17.2.2 and 18.2 of RFC 3315 govern server operation in Sections 17.2.2 and 18.2 of RFC 3315 govern server operation in
regards to option assignment. As a convenience to the reader, we regard to option assignment. As a convenience to the reader, we
mention here that the server will send option SOL_MAX_RT and mention here that the server will send options SOL_MAX_RT and
INF_MAX_RT only if configured with specific values for them and the INF_MAX_RT only if configured with specific values for them, and the
client requested those options using Option Request Option. client requested those options using the Option Request option.
The DHCPv6 server MAY include the SOL_MAX_RT option in any response The DHCPv6 server MAY include the SOL_MAX_RT option in any response
it sends to a client that has included the SOL_MAX_RT option code in it sends to a client that has included the SOL_MAX_RT option code in
an Option Request option. The SOL_MAX_RT option is sent in the main an Option Request option. The SOL_MAX_RT option is sent in the main
body of the message to client, not as a encapsulated option in, e.g., body of the message to client, not as an encapsulated option in,
an IA_NA, IA_TA [RFC3315] or IA_PD [RFC3633] option. e.g., an IA_NA, IA_TA [RFC3315], or IA_PD [RFC3633] option.
The DHCPv6 server MAY include the INF_MAX_RT option in any response The DHCPv6 server MAY include the INF_MAX_RT option in any response
it sends to a client that has included the INF_MAX_RT option code in it sends to a client that has included the INF_MAX_RT option code in
an Option Request option. The INF_MAX_RT option is sent in the main an Option Request option. The INF_MAX_RT option is sent in the main
body of the message to client, not as a encapsulated option in, e.g., body of the message to client, not as an encapsulated option in,
an IA_NA, IA_TA or IA_PD option. e.g., an IA_NA, IA_TA, or IA_PD option.
9. DHCPv6 Relay Agent Behavior Text 9. DHCPv6 Relay Agent Behavior
There are no additional requirements for relays. There are no additional requirements for relays.
10. Security Considerations 10. Security Considerations
This document introduces one security consideration beyond those This document introduces one security consideration beyond those
described in RFC 3315. A malicious DHCPv6 server might cause a described in RFC 3315. A malicious DHCPv6 server might cause a
client to set its SOL_MAX_RT and INF_MAX_RT parameters to an client to set its SOL_MAX_RT and INF_MAX_RT parameters to an
arbitrarily high value with the SOL_MAX_RT and INF_MAX_RT options, unreasonably high value with the SOL_MAX_RT and INF_MAX_RT options,
which may cause an undue delay in a client completing its DHCPv6 which may cause an undue delay in a client completing its DHCPv6
protocol transaction in the case no other valid response is received. protocol transaction in the case no other valid response is received.
Assuming the client also receives a response from a valid DHCPv6 Assuming the client also receives a response from a valid DHCPv6
server, large values for SOL_MAX_RT and INF_MAX_RT will not have any server, large values for SOL_MAX_RT and INF_MAX_RT will not have any
effect. effect.
11. Acknowledgments 11. Acknowledgments
Tomek Mrugalski edited the text for compliance with draft-ietf-dhc- Tomek Mrugalski edited the text for compliance with "Guidelines for
option-guidelines [I-D.ietf-dhc-option-guidelines] and added Creating New DHCPv6 Options" [DHC-OPTION] and added important details
important details to the Security Considerations section. to the Security Considerations section.
12. IANA Considerations 12. IANA Considerations
IANA is requested to assign one option code each for IANA has assigned one option code each for OPTION_SOL_MAX_RT (82) and
OPTION_SOL_MAX_RT and OPTION_INF_MAX_RT from the "DHCP Option Codes" OPTION_INF_MAX_RT (83) from the "DHCP Option Codes" table of the
table of the Dynamic Host Configuration Protocol for IPv6 (DHCPv6) "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)" registry.
Registry.
13. References 13. References
13.1. Normative References 13.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3315] Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C., [RFC3315] Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C.,
and M. Carney, "Dynamic Host Configuration Protocol for and M. Carney, "Dynamic Host Configuration Protocol for
IPv6 (DHCPv6)", RFC 3315, July 2003. IPv6 (DHCPv6)", RFC 3315, July 2003.
13.2. Informative References 13.2. Informative References
skipping to change at page 8, line 15 skipping to change at page 7, line 30
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3315] Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C., [RFC3315] Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C.,
and M. Carney, "Dynamic Host Configuration Protocol for and M. Carney, "Dynamic Host Configuration Protocol for
IPv6 (DHCPv6)", RFC 3315, July 2003. IPv6 (DHCPv6)", RFC 3315, July 2003.
13.2. Informative References 13.2. Informative References
[I-D.ietf-dhc-option-guidelines] [DHC-OPTION]
Hankins, D., Mrugalski, T., Siodelski, M., Jiang, S., and Hankins, D., Mrugalski, T., Siodelski, M., Jiang, S., and
S. Krishnan, "Guidelines for Creating New DHCPv6 Options", S. Krishnan, "Guidelines for Creating New DHCPv6 Options",
draft-ietf-dhc-option-guidelines-13 (work in progress), Work in Progress, September 2013.
July 2013.
[RFC3633] Troan, O. and R. Droms, "IPv6 Prefix Options for Dynamic [RFC3633] Troan, O. and R. Droms, "IPv6 Prefix Options for Dynamic
Host Configuration Protocol (DHCP) version 6", RFC 3633, Host Configuration Protocol (DHCP) version 6", RFC 3633,
December 2003. December 2003.
Author's Address Author's Address
Ralph Droms Ralph Droms
Cisco Systems Cisco Systems
1414 Massachusetts Avenue 1414 Massachusetts Avenue
Boxborough, MA 01719 Boxborough, MA 01719
USA USA
Phone: +1 978 936 1674 Phone: +1 978 936 1674
Email: rdroms@cisco.com EMail: rdroms@cisco.com
 End of changes. 46 change blocks. 
86 lines changed or deleted 82 lines changed or added

This html diff was produced by rfcdiff 1.41. The latest version is available from http://tools.ietf.org/tools/rfcdiff/