DHC Working Group R. Yan Internet Draft Y. Jiang Expiration Date:
AugustSeptember 2006 L. Gui Alcatel Shanghai Bell X. Duan China Mobile Domain Suffix Option for DHCPv6 <draft-ietf-dhc-dhcpv6-opt-dnsdomain-01.txt> February<draft-ietf-dhc-dhcpv6-opt-dnsdomain-02.txt> March 6, 2006 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of 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. 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 AugustSeptember 6, 2006. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This document specifies a new DHCPv6 (DHCP for IPv6) option which is passed from a DHCPv6 server to a DHCPv6 client to specify the domain suffix name. 1. Introduction This document describes a new option for DHCPv6 [RFC3315] that provides a mechanism for the transfer of a domain name suffix. Using this option, the DHCPv6 server can specify the domain name suffix to the DHCPv6 client. 1.1 Terminology 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 [RFC2119]. This document should be read in conjunction with the DHCPv6 specification, [RFC3315]. Definitions for terms and acronyms used in this document are defined in RFC3315. 2. Domain Suffix Option The domain suffix option for DHCPv6 is used by the DHCPv6 server to tell the DHCPv6 client the domain suffix that the DHCPv6 server administrator has specified for that DHCPv6 client. The format of the domain suffix option is: 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | ~ Domain suffix ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type: 16-bits identifier of the type of option (TBD). Length: Length of the "domain suffix" field in octets. Domain suffix: The specification of a domain suffix. The domain suffix in the 'domain suffix' field MUST include only one item, and MUST be encoded as specified in the section of RFC3315 titled "Representation and use of domain names". 2.1 Usage A DHCPv6 client MUST include the option code in Option Request Option [RFC3315] if it desires the domain suffix option, and the DHCPv6 server SHOULD include this option in an Advertise or Reply if requested by the client in the Option Request Option. A DHCPv6 server may provide different values for the domain suffix option to different clients. The mechanism for choosing which suffix to assign to which client is a matter of implementation and administrative policy, and is therefore not specified in this document. 3. Security Considerations Security considerations in DHCP are described in section 23, "Security Considerations" of RFC3315. 4. IANA Considerations IANA is requested to assign a DHCPv6 option code for the Domain Suffix Option. 5. Acknowledgements The authors thank Ralph Droms, Ted Lemon, Bernie Volz, Tatuya Jinmei, Joe Quanaim andQuanaim, Stefaan De CnodderCnodder, and Stig Venaas for valuable discussions and comments. 6. References 6.1 Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3315] Bound, J., Carney, M., Perkins, C., Lemon, T., Volz, B. and R. Droms (ed.), "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)", RFC 3315, May 2003. Authors' Addresses Renxiang Yan Yinglan Jiang Luoning Gui Research & Innovation Center Alcatel Shanghai Bell Co., Ltd. 388#, NingQiao Road, Pudong Jinqiao, Shanghai 201206 P.R. China Phone: +86 (21) 5854-1240, ext. 7169 Email: firstname.lastname@example.org Yinglan.email@example.com Luoning.firstname.lastname@example.org Xiaodong Duan Research & Development Center China Mobile Communications Corporation 53A, Xibianmennei Ave., Xuanwu District, Beijing, 100053 P.R. China Phone: +86 (10) 6600-6688, ext. 3062 Email: email@example.com Full Copyright Statement Copyright (C) The Internet Society (2005). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 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