DNS Configuration options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
RFC 3646
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RFC - Proposed Standard
(December 2003; No errata)
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Last updated |
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2015-10-14
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IETF
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plain text
pdf
html
bibtex
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WG state
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(None)
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Document shepherd |
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No shepherd assigned
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| IESG |
IESG state |
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RFC 3646 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Thomas Narten
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IESG note |
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Published as RFC 3646.
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Send notices to |
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(None)
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Network Working Group R. Droms, Ed.
Request for Comments: 3646 Cisco Systems
Category: Standards Track December 2003
DNS Configuration options for Dynamic Host
Configuration Protocol for IPv6 (DHCPv6)
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This document describes Dynamic Host Configuration Protocol for IPv6
(DHCPv6) options for passing a list of available DNS recursive name
servers and a domain search list to a client.
1. Introduction
This document describes two options for passing configuration
information related to Domain Name Service (DNS) (RFC 1034 [6] and
RFC 1035 [1]) in DHCPv6 (RFC 3315 [2]).
2. 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 BCP 14, RFC 2119 [3].
Throughout this document, unless otherwise specified, the acronym
DHCP refers to DHCP for IPv6 (DHCPv6) as specified in RFC 3315.
This document uses terminology specific to IPv6 and DHCP as defined
in section "Terminology" of RFC 3315.
Droms Standards Track [Page 1]
RFC 3646 DNS Configuration Options for DHCPv6 December 2003
3. DNS Recursive Name Server option
The DNS Recursive Name Server option provides a list of one or more
IPv6 addresses of DNS recursive name servers to which a client's DNS
resolver MAY send DNS queries [1]. The DNS servers are listed in the
order of preference for use by the client resolver.
The format of the DNS Recursive Name Server 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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OPTION_DNS_SERVERS | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| DNS-recursive-name-server (IPv6 address) |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| DNS-recursive-name-server (IPv6 address) |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
option-code: OPTION_DNS_SERVERS (23)
option-len: Length of the list of DNS recursive name
servers in octets; must be a multiple of
16
DNS-recursive-name-server: IPv6 address of DNS recursive name server
4. Domain Search List option
The Domain Search List option specifies the domain search list the
client is to use when resolving hostnames with DNS. This option does
not apply to other name resolution mechanisms.
Droms Standards Track [Page 2]
RFC 3646 DNS Configuration Options for DHCPv6 December 2003
The format of the Domain Search List 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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OPTION_DOMAIN_LIST | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| searchlist |
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
option-code: OPTION_DOMAIN_LIST (24)
option-len: Length of the 'searchlist' field in octets
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