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  INTERNET-DRAFT                                             Eric A. Hall
  Document: draft-ietf-crisp-firs-ipv6-01.txt                    May 2003
  Expires: December, 2003
  Category: Experimental
  
  
                  Defining and Locating IPv6 Address Blocks
                 in the Federated Internet Registry Service
  
  
     Status of this Memo
  
     This document is an Internet-Draft and is in full conformance with
     all provisions of Section 10 of RFC 2026.
  
     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.
  
     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.
  
  
     Copyright Notice
  
     Copyright (C) The Internet Society (2003).  All Rights Reserved.
  
  
     Abstract
  
     This document defines LDAP schema and searching rules for IPv6
     address blocks, in support of the Federated Internet Registry
     Service (FIRS) described in [FIRS-ARCH] and [FIRS-CORE].
  
  
  
  Internet Draft    draft-ietf-crisp-firs-ipv6-01.txt         May 2003
  
  
  
     Table of Contents
  
     1.   Introduction..............................................2
     2.   Prerequisites and Terminology.............................2
     3.   Naming Syntax.............................................3
     4.   Object Classes and Attributes.............................5
     5.   Query Processing Rules....................................7
       5.1.  Query Pre-Processing...................................8
       5.2.  Query Bootstrapping....................................8
       5.3.  LDAP Matching..........................................9
       5.4.  Example Query.........................................10
     6.   Security Considerations..................................11
     7.   IANA Considerations......................................11
     8.   Author's Addresses.......................................11
     9.   Normative References.....................................11
     10.  Acknowledgments..........................................12
     11.  Changes from Previous Versions...........................12
     12.  Full Copyright Statement.................................13
  
  1.      Introduction
  
     This specification defines the naming syntax, object classes,
     attributes, matching filters, and query processing rules for
     storing and locating IPv6 address blocks in the FIRS service.
     Refer to [FIRS-ARCH] for information on the FIRS architecture and
     [FIRS-CORE] for the schema definitions and rules which govern the
     FIRS service as a whole.
  
     Note that reverse-lookup DNS domains for IPv6 address blocks are
     managed as DNS domain entries in [FIRS-DNS]. These are entirely
     different network resources, and should not be confused with IPv6
     address block entries.
  
     The definitions in this specification are intended to be used with
     FIRS. Their usage outside of FIRS is not prohibited, but any such
     usage is beyond this specification's scope of authority.
  
  2.      Prerequisites and Terminology
  
     The complete set of specifications in the FIRS collection
     cumulative define a structured and distributed information service
     using LDAPv3 for the data-formatting and transport functions. This
     specification should be read in the context of the complete set of
     specifications, which currently include the following:
  
  
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            draft-ietf-crisp-firs-arch-01, "The Federated Internet
            Registry Service: Architecture and Implementation"
            [FIRS-ARCH]
  
            draft-ietf-crisp-firs-core-01, "The Federated Internet
            Registry Service: Core Elements" [FIRS-CORE]
  
            draft-ietf-crisp-firs-dns-01, "Defining and Locating DNS
            Domains in the Federated Internet Registry Service"
            [FIRS-DNS]
  
            draft-ietf-crisp-firs-dnsrr-01, "Defining and Locating DNS
            Resource Records in the Federated Internet Registry
            Service" [FIRS-DNSRR]
  
            draft-ietf-crisp-firs-contact-01, "Defining and Locating
            Contact Persons in the Federated Internet Registry Service"
            [FIRS-CONTCT]
  
            draft-ietf-crisp-firs-asn-01, "Defining and Locating
            Autonomous System Numbers in the Federated Internet
            Registry Service" (this document) [FIRS-ASN]
  
            draft-ietf-crisp-firs-ipv4-01, "Defining and Locating IPv4
            Address Blocks in the Federated Internet Registry Service"
            [FIRS-IPV4]
  
            draft-ietf-crisp-firs-ipv6-01, "Defining and Locating IPv6
            Address Blocks in the Federated Internet Registry Service"
            [FIRS-IPV6]
  
     The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
     NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL"
     in this document are to be interpreted as described in RFC 2119.
  
  3.      Naming Syntax
  
     The naming syntax for IPv4 address blocks in FIRS MUST follow the
     form of "cn=<inetIpv4NetworkSyntax>,cn=inetResources,<partition>",
     where <inetIpv6NetworkSyntax > is the IPv6 address block resource,
     and where <partition> is a sequence of domainComponent relative
     distinguished names which identifies the scope of authority for
     the selected directory partition.
  
     The inetIpv6NetworkSyntax rules use the uncompressed, 32-nibble
     notation, terminated with a subnet "prefix". The network address
  
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     consists of eight sub-components, each of which are separated by a
     colon character, and which each consist of four hexadecimal values
     that represent one nibble. The entire sequence is followed by a
     "/" character and a three-digit decimal "prefix" value.
  
     Entries which use the inetIpv6NetworkSyntax MUST use the starting
     address from a range of inclusive addresses, and MUST use CIDR
     prefix notation. In this manner, it is possible to create an
     inetIpv6Network entry for a range of addresses of any size
     (including a single host).
  
     Each of the 16-bit colon-separated values MUST be written in the
     uncompressed form. Nibbles with a value of zero MUST be
     represented by the hexadecimal sequence of "0000".
  
     If an input string does not match this syntax, a FIRS-aware
     application MAY attempt to manipulate the input string to form a
     valid value. For example, if a user enters a zero-compressed IPv6
     address such as "3ffe:ffff::", the application MAY convert the
     input value to "3ffe:ffff:0000:0000:0000:0000:0000:0000/32" in
     order to form a valid inetIpv6NetworkSyntax form.
  
     An augmented BNF for this syntax is as follows:
  
          inetIpv6NetworkSyntax = inetIpv6Octet ":" inetIpv6Octet ":"
            inetIpv6Octet ":" inetIpv6Octet ":" inetIpv6Octet ":"
            inetIpv6Octet ":" inetIpv6Octet ":" inetIpv6Octet "/"
            inetIpv6Prefix
  
          inetIpv6Octet = 4*4nibblePart
  
          nibblePart = hexadecimal digit between "0" and "F" inclusive
  
          inetIpv6Prefix = decimal value between "1" and "128"
            inclusive, with the non-affective leading zeroes removed
  
     The inetIpv6NetworkSyntax syntax is as follows:
  
          inetIpv6NetworkSyntax
          ( 1.3.6.1.4.1.7161.1.3.1 NAME 'inetIpv6NetworkSyntax' DESC
            'An IPv6 address and prefix.' )
  
     For example, an IPv6 network with a range of addresses between
     "3ffe:ffff::" and "3ffe:ffff:ffff:ffff:ffff:ffff:ffff:ffff" would
     be written as "cn=3ffe:ffff:0000:0000:0000:0000:0000:0000/32".
  
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     Similarly, a host address of "3ffe:ffff::1:2:3:4" would be written
     as "cn=3ffe:ffff:0000:0000:0001:0002:0003:0004/128".
  
     Note that the entry name of
     "cn=0000:0000:0000:0000:0000:0000:0000:0000/0" encompasses the
     entire IPv6 address space.
  
     Note that the use of "/" is illegal as data in URLs, and MUST be
     escaped before it is stored in a URL as data.
  
  4.      Object Classes and Attributes
  
     IPv6 address block entries in FIRS MUST use the inetIpv6Network
     object class, in addition to the mandatory object classes defined
     in [FIRS-CORE]. IPv6 address block entries MUST be treated as
     containers capable of holding subordinate entries. If an entry
     exists as a referral source, the entry MUST also be defined with
     the referral object class, in addition to the above requirements.
  
     The inetIpv6Network object class is a structural object class
     which is subordinate to the inetResources object class. The
     inetIpv6Network object class has no mandatory attributes, although
     it does have several optional attributes. The inetIpv6Network
     object class also inherits the attributes defined in the
     inetResources object class, including the "cn" naming attribute.
  
     The schema definition for the inetIpv6Network object class is as
     follows:
  
          inetIpv6Network
          ( 1.3.6.1.4.1.7161.1.3.0 NAME 'inetIpv6Network' DESC 'IPv6
            network attributes.' SUP inetResources STRUCTURAL MAY (
            inetIpv6DelegationStatus $ inetIpv6DelegationDate $
            inetIpv6Registrar $ inetIpv6Registry $ inetIpv6Contacts $
            inetIpv6RoutingContacts ) )
  
     The attributes from the inetIpv6Network object class are described
     below:
  
          inetIpv6Contacts
          ( 1.3.6.1.4.1.7161.1.3.2 NAME 'inetIpv6Contacts' DESC
            'Contacts for general administrative issues concerning this
            IPv6 address block.' EQUALITY caseIgnoreMatch SYNTAX
            inetContactSyntax )
  
  
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          inetIpv6DelegationDate
          ( 1.3.6.1.4.1.7161.1.3.3 NAME 'inetIpv6DelegationDate' DESC
            'Date this IPv6 address block was delegated.' EQUALITY
            generalizedTimeMatch ORDERING generalizedTimeOrderingMatch
            SYNTAX generalizedTime SINGLE-VALUE )
  
          inetIpv6DelegationStatus
          ( 1.3.6.1.4.1.7161.1.3.4 NAME 'inetIpv6DelegationStatus' DESC
            'Delegation status of this IPv6 address block.' EQUALITY
            numericStringMatch SYNTAX numericString{2} SINGLE-VALUE )
  
            NOTE: In an effort to facilitate internationalization and
            programmatic processing, the current status of a delegation
            is identified by a 16-bit integer. The values and status
            mapping is as follows:
  
                 0   Reserved delegation (permanently inactive)
                 1   Assigned and active (normal state)
                 2   Assigned but not yet active (new delegation)
                 3   Assigned but on hold (disputed)
                 4   Assignment revoked (database purge pending)
  
            Additional values are reserved for future use, and are to
            be administered by IANA.
  
            Note that there is no status code for "unassigned";
            unassigned entries SHOULD NOT exist, and SHOULD NOT be
            returned as answers.
  
          inetIpv6Registrar
          ( 1.3.6.1.4.1.7161.1.3.5 NAME 'inetIpv6Registrar' DESC
            'Registrar who delegated this IPv6 address block.' EQUALITY
            caseIgnoreMatch SYNTAX directoryString )
  
            NOTE: The inetIpv6Registrar attribute uses a URL to
            indicate the registrar who delegated the address block. The
            attribute structure is identical to the labeledURI
            attribute, as defined in [RFC2798], including the URL and
            textual comments. The data can refer to any valid URL.
  
          inetIpv6Registry
          ( 1.3.6.1.4.1.7161.1.3.6 NAME 'inetIpv6Registry' DESC
            'Registry where this IPv6 address block is managed.'
            EQUALITY caseIgnoreMatch SYNTAX directoryString )
  
  
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            NOTE: The inetIpv6Registry attribute uses a URL to indicate
            the registry who is ultimately responsible for the address
            block. The attribute structure is identical to the
            labeledURI attribute, as defined in [RFC2798], including
            the URL and textual comments. The data can refer to any
            valid URL.
  
          inetIpv6RoutingContacts
          ( 1.3.6.1.4.1.7161.1.3.7 NAME 'inetIpv6RoutingContacts' DESC
            'Contacts for routing-related problems with this IPv4
            address block.' EQUALITY caseExactMatch SYNTAX
            inetContactSyntax )
  
     An example of the inetIpv6Network object class is shown in Figure
     1 below. The example includes attributes from the inetIpv6Network,
     inetResources, and inetAssociatedResources object classes.
  
          cn=3ffe:ffff:0000:0000:0000:0000:0000:0000/32,
             cn=inetResources,dc=arin,dc=net
          [top object class]
          [inetResources object class]
          [inetIpv6Network object class]
          [inetAssociatedResources object class]
          |
          +-attribute: description
          | value: "The example.net top-level network"
          |
          +-attribute: inetIpv6Contacts
          | value: "hostmaster@example.com"
          |
          +-attribute: inetAssociatedAsNumbers
          | value: "65535"
          |
          +-attribute: inetIpv6Registrar
            value: "http://www.arin.net/ (ARIN)"
  
     Figure 1: The 3ffe:ffff:0000:0000:0000:0000:0000:0000/32 address
     block in the dc=arin,dc=net directory partition.
  
  5.      Query Processing Rules
  
     Queries for IPv6 address blocks have several special requirements,
     as discussed in the following sections.
  
     Refer to [FIRS-CORE] for general information about FIRS queries.
  
  
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  5.1.    Query Pre-Processing
  
     Clients MUST ensure that the query input is normalized according
     to the rules specified in section 3 before the input is used as
     the assertion value to the resulting LDAP query.
  
     The authoritative partition for an IPv6 address block is
     determined by mapping the normalized input to an associated
     reverse-lookup DNS domain name (using the process as defined in
     RFC 1886 [RFC1886], as amended by RFC 3152 [RFC3152]), and then
     mapping the resulting DNS domain name to a sequence of
     domainComponent labels. The subnet prefix sequence MUST be
     stripped from the input address block as part of this mapping
     process (note that these rules only apply to the mapping process
     by which an authoritative partition is constructed, and does not
     apply to the process by which the entry-specific relative
     distinguished name is constructed).
  
     Due to the 128-bit addresses and the rules defined in [RFC1886], a
     fully-formed IPv6 reverse-lookup domain name will have 34 labels,
     which result in very large distinguished names.
  
     For example, an IPv6 address of
     "3ffe:ffff:0000:0000:0000:0000:0000:0000/32" would be mapped to
     the reverse-lookup DNS domain name of
     "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.f.f.f.f.e.f.f.3.
     ip6.arpa." which would in turn be mapped to "dc=0,dc=0,dc=0,dc=0,
     dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,
     dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=f,dc=f,dc=f,dc=f,dc=e,dc=f,
     dc=f,dc=3,dc=ip6,dc=arpa".
  
  5.2.    Query Bootstrapping
  
     FIRS clients MUST use the top-down bootstrap model by default for
     IPv6 address block queries. As such, the search base for default
     queries would be set to "dc=arpa" rather than being set to the
     fully-qualified distinguished name of the authoritative partition.
  
     FIRS clients MAY use the targeted or bottom-up bootstrap models
     for queries if necessary or desirable. However, it is not likely
     that entries will be found for all IPv6 address block resources
     using these models. As such, the top-down bootstrap model will be
     the most useful in most cases, and MUST be used by default.
  
  
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  5.3.    LDAP Matching
  
     FIRS clients MUST use the inetIpv6NetworkMatch extensible matching
     filter in LDAP searches for IPv6 address block entries.
  
     The inetIpv6NetworkMatch filter provides an identifier and search
     string format which collectively inform a queried server that a
     specific IPv6 address should be searched for, and that any
     matching inetIpv6network object class entries should be returned.
  
     The inetIpv6NetworkMatch extensibleMatch filter is defined as
     follows:
  
          inetIpv6NetworkMatch
          ( 1.3.6.1.4.1.7161.1.3.8 NAME 'inetIpv6NetworkMatch' SYNTAX
            inetIpv6NetworkSyntax )
  
     The assertion value MUST be a normalized IPv6 address, using the
     inetIpv4NetworkSyntax defined in section 3.
  
     A FIRS server MUST compare the assertion value against the RDN of
     all entries in the inetResources container of the partition
     specified in the search base which have an object class of
     inetIpv6Network. Any entry with an object class of inetIpv6Network
     and with a relative distinguished name which clearly encompasses
     the IPv6 address provided in the assertion value MUST be returned.
     Entries which do not clearly encompass the queried address MUST
     NOT be returned. Entries which do not have an object class of
     inetIpv6Network MUST NOT be returned.
  
     In order to ensure that all of the relevant entries are found
     (including any referrals), the search filters for these resources
     MUST specify the inetIpv6Network object class along with the
     search criteria. For example, "(&(objectclass=inetIpv6Network)
     (1.3.6.1.4.1.7161.1.3.8:=
     3ffe:ffff:0000:0000:0000:0000:0000:0000/32))" with a search base
     of "cn=inetResources,dc=arin,dc=net" would find all of the
     inetIpv6Network object class entries which were superior to the
     "3ffe:ffff:0000:0000:0000:0000:0000:0000/32" address block in the
     "dc=arin,dc=net" partition.
  
     Note that the entry name of
     "cn=0000:0000:0000:0000:0000:0000:0000:0000/0" encompasses the
     entire IPv6 address space. When used in conjunction with
     referrals, this entry MAY be used to redirect all
  
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     inetIpv6NetworkMatch queries to another partition for subsequent
     processing.
  
     The matching filters defined in this specification MUST be
     supported by FIRS clients and servers. FIRS servers MAY support
     additional sub-string filters, soundex filters, or any other
     filters they wish (these may be required to support generic LDAP
     clients), although FIRS clients MUST NOT expect any additional
     filters to be available.
  
  5.4.    Example Query
  
     The following example assumes that the user has specified
     "3ffe:ffff:0000:0000:0000:0000:0000:0000/32" as the query value:
  
        a.  Normalize the input, which is
            "3ffe:ffff:0000:0000:0000:0000:0000:0000/32" in this case.
  
        b.  Determine the authoritative partition.
  
            1.   Map the input sequence to the reverse-lookup domain
                 name, which is "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
                 0.0.0.0.0.0.f.f.f.f.e.f.f.3.ip6.arpa." in this case.
  
            2.   Map the domain name to an authoritative partition,
                 which is "dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,
                 dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,
                 dc=0,dc=0,dc=0,dc=0,dc=0,dc=0,dc=f,dc=f,dc=f,dc=f,
                 dc=e,dc=f,dc=f,dc=3,dc=ip6,dc=arpa" in this case. By
                 default, queries for IPv6 address blocks use the top-
                 down model, meaning that the right-most relative
                 distinguished name of "dc=arpa" will be used as the
                 authoritative partition.
  
        c.  Determine the search base for the query, which will be
            "cn=inetResources,dc=arpa" if the defaults are used.
  
        d.  Initiate a DNS lookup for the SRV resource records
            associated with "_ldap._tcp.arpa." For the purpose of this
            example, assume that this lookup succeeds, with the DNS
            response message indicating that "firs.iana.org" is the
            preferred LDAP server.
  
        e.  Submit an LDAPv3 query to the specified server, using
            "(&(objectClass=inetIpv6Network)(1.3.6.1.4.1.7161.1.3.8:=
            3ffe:ffff:0000:0000:0000:0000:0000:0000/32)" as the
  
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            matching filter, "cn=inetResources,dc=arpa" as the search
            base, and the global query defaults defined in [FIRS-CORE].
  
        f.  Assume that no referrals are received. Display the answer
            data which has been received and exit the query.
  
  6.      Security Considerations
  
     Security considerations are discussed in [FIRS-ARCH].
  
  7.      IANA Considerations
  
     IANA considerations are discussed in [FIRS-ARCH].
  
  8.      Author's Addresses
  
     Eric A. Hall
     ehall@ehsco.com
  
  9.      Normative References
  
          [RFC1886]     Thomson, S., and Huitema, C. "DNS Extensions
                         to support IP version 6", RFC 1886, December
                         1995.
  
          [RFC2247]     Kille, S., Wahl, M., Grimstad, A., Huber, R.,
                         and Sataluri, S. "Using Domains in LDAP/X.500
                         DNs", RFC 2247, January 1998.
  
          [RFC2251]     Wahl, M., Howes, T., and Kille, S.
                         "Lightweight Directory Access Protocol (v3)",
                         RFC 2251, December 1997.
  
          [RFC2252]     Wahl, M., Coulbeck, A., Howes, T., and Kille,
                         S. "Lightweight Directory Access Protocol
                         (v3): Attribute Syntax Definitions", RFC 2252,
                         December 1997.
  
          [RFC2254]     Howes, T. "The String Representation of LDAP
                         Search Filters", RFC 2254, December 1997.
  
          [RFC3152]     Bush, R. "Delegation of IP6.ARPA", RFC 3152,
                         August 2001.
  
          [FIRS-ARCH]   Hall, E. "The Federated Internet Registry
                         Service: Architecture and Implementation
                         Guide", draft-ietf-crisp-firs-arch-01, May
                         2003.
  
  
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          [FIRS-ASN]    Hall, E. "Defining and Locating Autonomous
                         System Numbers in the Federated Internet
                         Registry Service", draft-ietf-crisp-firs-asn-
                         01, May 2003.
  
          [FIRS-CONTCT] Hall, E. "Defining and Locating Contact
                         Persons in the Federated Internet Registry
                         Service", draft-ietf-crisp-firs-contact-01,
                         May 2003.
  
          [FIRS-CORE]   Hall, E. "The Federated Internet Registry
                         Service: Core Elements", draft-ietf-crisp-
                         firs-core-01, May 2003.
  
          [FIRS-DNS]    Hall, E. "Defining and Locating DNS Domains in
                         the Federated Internet Registry Service",
                         draft-ietf-crisp-firs-dns-01, May 2003.
  
          [FIRS-DNSRR]  Hall, E. "Defining and Locating DNS Resource
                         Records in the Federated Internet Registry
                         Service", draft-ietf-crisp-firs-dnsrr-01, May
                         2003.
  
          [FIRS-IPV4]   Hall, E. "Defining and Locating IPv4 Address
                         Blocks in the Federated Internet Registry
                         Service", draft-ietf-crisp-firs-ipv4-01, May
                         2003.
  
          [FIRS-IPV6]   Hall, E. "Defining and Locating IPv6 Address
                         Blocks in the Federated Internet Registry
                         Service", draft-ietf-crisp-firs-ipv6-01, May
                         2003.
  
  10.     Acknowledgments
  
     Funding for the RFC editor function is currently provided by the
     Internet Society.
  
     Portions of this document were funded by Verisign Labs.
  
     The first version of this specification was co-authored by Andrew
     Newton of Verisign Labs, and subsequent versions continue to be
     developed with his active participation.
  
  11.     Changes from Previous Versions
  
     draft-ietf-crisp-firs-ipv6-01:
  
        *   Several clarifications and corrections have been made.
  
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     draft-ietf-crisp-firs-ipv6-00:
  
        *   Restructured the document set.
  
        *   "Attribute references" have been eliminated from the
            specification. All referential attributes now provide
            actual data instead of URL pointers to data. Clients that
            wish to retrieve these values will need to start new
            queries using the data values instead of URLs.
  
        *   The attribute-specific operational attributes have been
            eliminated as unnecessary.
  
        *   The inetIpv6Registrar and inetIpv6Registry attributes were
            added.
  
        *   Several attributes had their OIDs changed. NOTE THAT THIS
            IS AN INTERNET DRAFT, AND THAT THE OIDS ARE SUBJECT TO
            ADDITIONAL CHANGES AS THIS DOCUMENT IS EDITED.
  
        *   Several typographical errors have been fixed.
  
        *   Some unnecessary text has been removed.
  
  12.     Full Copyright Statement
  
     Copyright (C) The Internet Society (2003). All Rights Reserved.
  
     This document and translations of it may be copied and furnished
     to others, and derivative works that comment on or otherwise
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  Hall                  I-D Expires: December 2003            [page 13]


  Internet Draft    draft-ietf-crisp-firs-ipv6-01.txt         May 2003
  
  
     This document and the information contained herein is provided on
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     THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
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  Hall                  I-D Expires: December 2003            [page 14]
  

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