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doc/draft/draft-ietf-behave-address-format-06.txt → doc/draft/draft-ietf-behave-address-format-07.txt
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@ -6,16 +6,16 @@ Internet-Draft CERNET Center/Tsinghua University
Obsoletes: 2765 (if approved) C. Huitema
Updates: 4291 (if approved) Microsoft Corporation
Intended status: Standards Track M. Bagnulo
Expires: September 28, 2010 UC3M
Expires: October 11, 2010 UC3M
M. Boucadair
France Telecom
X. Li
CERNET Center/Tsinghua University
March 27, 2010
April 9, 2010
IPv6 Addressing of IPv4/IPv6 Translators
draft-ietf-behave-address-format-06.txt
draft-ietf-behave-address-format-07.txt
Abstract
@ -29,39 +29,34 @@ Abstract
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Drafts.
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
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
This Internet-Draft will expire on September 28, 2010.
Bao, et al. Expires September 28, 2010 [Page 1]
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This Internet-Draft will expire on October 11, 2010.
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
Bao, et al. Expires October 11, 2010 [Page 1]
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This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
@ -70,7 +65,7 @@ Copyright Notice
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the BSD License.
described in the Simplified BSD License.
Table of Contents
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Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators April 2010
1. Introduction
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Bao, et al. Expires September 28, 2010 [Page 3]
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document are to be interpreted as described in RFC 2119 [RFC2119].
@ -220,9 +220,9 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
Bao, et al. Expires September 28, 2010 [Page 4]
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Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators April 2010
variable length prefix, the embedded IPv4 address, and a variable
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o When the prefix is 32 bits long, the IPv4 address is encoded in
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+-----------------------+------------+------------------------------+
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The Well-Known Prefix MUST NOT be used to represent non global IPv4
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Bao, et al. Expires September 28, 2010 [Page 8]
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Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators April 2010
served by IPv4-Translatable IPv6 addresses. Specifically, if a node
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Bao, et al. Expires September 28, 2010 [Page 9]
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combination of the prefix and the IPv4 address. In theory, routers
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router anycast address in IPv6 and network identifier in IPv4, the
@ -612,9 +612,9 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
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Translatable and the IPv4-Converted IPv6 addresses were constructed
@ -668,9 +668,9 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
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would not be able to support translation without modification. This
@ -724,9 +724,9 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
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throughout the network that packets are coming from an authorized
@ -734,14 +734,16 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
4.2. Secure Configuration
The prefixes and formats need to be the configured consistently among
multiple devices in the same network (e.g., nodes that need to prefer
native over translated addresses, DNS gateways, and IPv4/IPv6
translators). As such, the means by which they are learned/
configured MUST be secure. Specifying a default prefix and/or format
in implementations provides one way to configure them securely. Any
alternative means of configuration is responsible for specifying how
to do so securely.
The prefixes used for address translation are used by IPv6 nodes to
send packets to IPv6/IPv4 translators. Attackers could attempt to
fool nodes, DNS gateways, and IPv4/IPv6 translators into using wrong
values for these parameters, resulting in network disruption, denial
of service, and possible information disclosure. To mitigate such
attacks, network administrators need to ensure that prefixes are
configured in a secure way.
The mechanisms for achieving secure configuration of prefixes are
beyond the scope of this document.
5. IANA Considerations
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Congxiao Bao
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8. References
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Authors' Addresses
@ -948,9 +948,9 @@ Authors' Addresses
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Xing Li
@ -1004,6 +1004,6 @@ Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators March 2010
Bao, et al. Expires September 28, 2010 [Page 18]
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