Dynamic Host Configuration (dhc) -------------------------------- Charter Last Modified: 2009-04-16 Current Status: Active Working Group Chair(s): John Jason Brzozowski Ted Lemon Internet Area Director(s): Ralph Droms Jari Arkko Internet Area Advisor: Ralph Droms Mailing Lists: General Discussion:dhcwg@ietf.org To Subscribe: http://www.ietf.org/mailman/listinfo/dhcwg Archive: http://www.ietf.org/mail-archive/web/dhcwg/current/maillist.html Description of Working Group: The dhc working group (DHC WG) has developed DHCP for automated allocation, configuration and management of IP addresses and TCP/IP protocol stack parameters. DHCPv4 is currently a "Draft Standard" and is documented in RFC 2131 and RFC 2132. DHCPv6 is currently a "Proposed Standard" and is documented in RFC 3315. Subsequent RFCs document additional options and other enhancements to the specifications. The DHC WG is responsible for reviewing DHCP options or other extensions (for both IPv4 and IPv6). The DHC WG is expected to review all proposed extensions to DHCP to ensure that they are consistent with the DHCP specification and other option formats, that they do not duplicate existing mechanisms, etc. Generally speaking, the DHC WG will not be responsible for evaluating the semantic content of proposed options. Similarly, the ownership of specifications typically belongs the relevant working group that needs more functionality from DHCP, not the DHC WG. The DHC WG coordinates reviews of the proposed options together with those working groups. It is required that those working groups have consensus to take on the work and that the work is within their charter. Exceptionally, with AD agreement, this same process can also be used for Individual Submissions originating outside WGs. However, the DHC WG can in some cases develop its own options that relate to either maintenance of existing specifications or improvements in the operation of the DHCP infrastructure itself. The DHC WG has the following main objectives: * Develop extensions to the DHCP infrastructure as required to meet new applications and deployments of DHCP. The topics currently in development are: - Subnet allocation mechanisms - Virtual subnet identification option - Option for passing DNS domain information in DHCPv6 - DHCP relay agent assignment notification in DHCPv6 - Option for DHCPv6 server reply sequence numbers - Rebinding capability for DHCPv6 Reconfigure messages - Behavior of layer 2 relay agents The adoption of new items requires explicit agreement from the AD or rechartering. * Write analyses of the DHCPv4 and DHCPv6 specifications, including RFC 2131, RFC 2132, RFC 3315 and other RFCs defining additional options, which identifies ambiguities, contradictory specifications and other obstacles to development of interoperable implementations. Recommend a process for resolving identified problems and incorporating the resolutions into the DHCP specification. Secondly, advance DHCPv4 (RFC 2131 and RFC 2132) and DHCPv6 (RFC 3315) in IETF Standards Track. Thirdly, specify guidelines for creating new DHCP options, and report on the status of DHCPv4 option reclassification. * Assess the requirements for a dual-stack host to use DHCP to obtain configuration settings for both IPv4 and IPv6. Hosts that include implementations of both IPv4 and IPv6 ("dual-stack hosts") may use DHCP to obtain configuration settings (including assigned addresses) for both IPv4 and IPv6. The DHCPv4 and DHCPv6 specifications (RFC 2131, RFC 2132, RFC 3315 and subsequent RFCs) do not explicitly explain how a dual-stack host uses DHCP to obtain configuration settings for both IP stacks. The DHC WG will evaluate solutions for configuration of dual-stack hosts through DHCP and select a solution that will be developed and published by the WG. * Hold a discussion whether on-link prefix information and default router information is needed in DHCP in addition to router advertisements. Actual solutions are out of scope for the WG, however. Goals and Milestones: Done WG Last Call on DHCP Options for Internet Storage Name Service (draft-ietf-dhc-isnsoption-03.txt) Done WG Last Call on Load Balancing for DHCPv6 (draft-ietf-dhc-dhcpv6-loadb-02.txt) Done WG Last Call on Time Configuration Options for DHCPv6 (draft-ietf-dhc-dhcpv6-opt-timeconfig-01.txt) Done WG Last Call on IPv6 Prefix Options for DHCPv6 (draft-troan-dhcpv6-opt-prefix-delegation-02.txt) Done WG Last Call on DNS Configuration options for DHCPv6 (draft-ietf-dhc-dhcpv6-opt-dnsconfig-01.txt) Done WG Last Call on NIS Configuration Options for DHCPv6 (draft-ietf-dhc-dhcpv6-opt-nisconfig-01.txt) Done Resubmit draft-ietf-dhc-dhcpv6-28.txt to IESG Done Identify DHCPv4 authentication design team Done Identify DHCPv4 specification review design team Done Identify DHCPv4 relay agent message authentication design team Done Submit DHCP Options for Internet Storage Name Service to IESG (draft-ietf-dhc-isnsoption) Done Submit DNS Configuration options for DHCPv6 to IESG (draft-ietf-dhc-dhcpv6-opt-dnsconfig) Done Submit NIS Configuratio Options for DHCPv6 to IESG (draft-ietf-dhc-dhcpv6-opt-nisconfig) Done Submit IPv6 Prefix Options for DHCPv6 to IESG (draft-troan-dhcpv6-opt-prefix-delegation) Done Submit 'Detection of Network Attachment (DNA) in IPv4' to IESG (draft-ietf-dhc-dna-ipv4) Done Resolve IPR issues around 'Rapid Commit Option for DHCPv4' Done Publish report on dual-stack issues in DHCP (draft-ietf-dhc-dual-stack) Done Publish report on requirements for renumbering using stateless DHCPv6 (draft-ietf-dhc-stateless-dhcpv6-renumbering) Done Submit 'Lifetime Option for DHCPv6' to IESG (draft-ietf-dhc-lifetime) Done Submit 'Rapid Commit Option for DHCPv4' to IESG (draft-ietf-dhc-rapid-commit-opt) Done Submit DDNS/DHCP documents to IESG Done Submit 'Node-Specific Client Identifiers for DHCPv4' to IESG (draft-ietf-dhc-3315id-for-v4) Done WG last call for 'Subnet Allocation Option' Done WG last call on 'Virtual Subnet Selection Option' Oct 2007 Submit 'Subnet Allocation Option' (draft-ietf-dhc-subnet-alloc-04) to IESG for Proposed Standard Nov 2007 WG last call on 'Guidelines for Creating New DHCP Options' (draft-ietf-dhc-option-guidelines) Nov 2007 Submit 'Virtual Subnet Selection Option', (draft-ietf-dhc-vpn-option) and (draft-ietf-dhc-agent-vpn-id) to IESG for Proposed Standard Dec 2007 WG last call for 'Domain Suffix Option for DHCPv6' (draft-ietf-dhc-dhcpv6-opt-dnsdomain) Jan 2008 Submit 'Domain Suffix Option for DHCPv6' (draft-ietf-dhc-dhcpv6-opt-dnsdomain) to IESG for Proposed Standard Jan 2008 Submit 'Guidelines for Creating New DHCP Options' (draft-ietf-dhc-option-guidelines) to IESG for Best Current Practice Jan 2008 Develop plan for advancing DHCPv4 and DHCPv6 plan to include completion of DHCPv4 specification review report, 'Implementation Issues with RFC 2131' (draft-ietf-dhc-implementation) for Informational Feb 2008 WG last call for 'Status of Reclassifying DHCPv4 Options' (draft-ietf-dhc-status-3942) Feb 2008 WG last call for 'Dual-stack clients and merging of data from DHCPv4 and DHCPv6' (draft-ietf-dhc-dual-stack-merge); waiting for more experience with IPv6 deployment Feb 2008 WG last call for 'Rebind Capability in DHCPv6 Reconfigure Messages' (draft-ietf-dhc-dhcpv6-reconfigure-rebind) Mar 2008 Submit 'Status of Reclassifying DHCPv4 Options' (draft-ietf-dhc-status-3942) to IESG for Informational Apr 2008 2nd WG last call for 'DHCP Relay Agent Assignment Notification Option (draft-ietf-dhc-dhcpv6-agentopt-delegate) and 'DHCPv6 Server Reply Sequence Number Option' (draft-ietf-dhc-dhcpv6-srsn-option) May 2008 Submit 'Rebind Capability in DHCPv6 Reconfigure Messages' (draft-ietf-dhc-dhcpv6-reconfigure-rebind) to IESG for Proposed Standard Jun 2008 WG last call on 'Layer 2 Relay Agent Behaviour' (draft-ietf-dhc-layer2-relay-agent) Jul 2008 Submit 'Layer 2 Relay Agent Behaviour' to IESG (draft-ietf-dhc-layer2-relay-agent) for Informational Jul 2008 Submit 'DHCP Relay Agent Assignment Notification Option' (draft-ietf-dhc-dhcpv6-agentopt-delegate) and 'DHCPv6 Server Reply Sequence Number Option' (draft-ietf-dhc-dhcpv6-srsn-option) to IESG for Proposed Standard Jul 2008 Recharter, if needed Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- Jul 2001 Oct 2010 Virtual Subnet Selection Options for DHCPv4 and DHCPv6 Jan 2008 Apr 2011 Layer 2 Relay Agent Information Jun 2008 Jul 2009 The DHCPv4 Relay Agent Identifier Suboption Feb 2009 Oct 2010 Bulk DHCPv4 Lease Query Jun 2009 Mar 2011 Forcerenew Nonce Authentication Jul 2009 Oct 2010 Lightweight DHCPv6 Relay Agent Apr 2010 Dec 2010 Secure DHCPv6 Using CGAs Oct 2010 Feb 2011 Definition of the UUID-based DHCPv6 Unique Identifier (DUID-UUID) Oct 2010 Jan 2011 Prefix Exclude Option for DHCPv6-based Prefix Delegation Apr 2011 Apr 2011 DHCPv6 Redundancy Deployment Considerations Apr 2011 Apr 2011 Configuring Cryptographically Generated Addresses (CGA) using DHCPv6 Request For Comments: RFC Stat Published Title ------- -- ----------- ------------------------------------ RFC1531 PS Oct 1993 Dynamic Host Configuration Protocol RFC1532 PS Oct 1993 Clarifications and Extensions for the Bootstrap Protocol RFC1534 DS Oct 1993 Interoperation Between DHCP and BOOTP RFC1533 PS Oct 1993 DHCP Options and BOOTP Vendor Extensions RFC1542 DS Oct 1993 Clarifications and Extensions for the Bootstrap Protocol RFC1541 PS Oct 1993 Dynamic Host Configuration Protocol RFC2131 DS Apr 1997 Dynamic Host Configuration Protocol RFC2132 DS Apr 1997 DHCP Options and BOOTP Vendor Extensions RFC2242 PS Nov 1997 Netware/IP Domain Name and Information RFC2241 PS Nov 1997 DHCP Options for Novell Directory Services RFC2485 PS Jan 1999 DHCP Option for The Open Group's User Authentication Protocol RFC2489BCP Jan 1999 Procedure for Defining New DHCP Options RFC2563 PS May 1999 DHCP Option to Disable Stateless Auto-Configuration in IPv4 Clients RFC2610 PS Jun 1999 DHCP Options for Service Location Protocol RFC2939BCP Oct 2000 Procedure for Defining New DHCP Options and Message Types RFC2937 PS Oct 2000 The Name Service Search Option for DHCP RFC3011 PS Dec 2000 The Subnet Selection Option for DHCP RFC3004 PS Dec 2000 The User Class Option for DHCP RFC3046 PS Feb 2001 DHCP Relay Agent Information Option RFC3074 PS Mar 2001 DHC load balancing algorithm RFC3118 PS Jun 2001 Authentication for DHCP Messages RFC3203 PS Dec 2001 DHCP reconfigure extension RFC3256 PS Apr 2002 The DOCSIS Device Class DHCP Relay Agent Information Sub-option RFC3396 PS Nov 2002 Encoding Long Options in DHCPv4 RFC3442 PS Dec 2002 The Classless Static Route Option for Dynamic Host Configuration Protocol (DHCP) version 4 RFC3495 PS Mar 2003 Dynamic Host Configuration Protocol (DHCP) Option for CableLabs Client Configuration RFC3527 PS Apr 2003 Link Selection sub-option for the Relay Agent Information Option for DHCPv4 RFC3315 PS Jul 2003 Dynamic Host Configuration Protocol for IPv6 (DHCPv6) RFC3594 PS Sep 2003 PacketCable Security Ticket Control Sub-option for the the DHCP CableLabs Client Configuration (CCC)Option RFC3646Standard Dec 2003 DNS Configuration Options for DHCPv6 RFC3633Standard Dec 2003 IPv6 Prefix Options for DHCPv6 RFC3634Standard Jan 2004 KDC Server Address Sub-option RFC3679 I Jan 2004 Unused DHCP Option Codes RFC3736Standard Apr 2004 Stateless DHCP Service for IPv6 RFC3898Standard Oct 2004 NIS Configuration Options for DHCPv6 RFC3925Standard Nov 2004 Vendor-Identifying Vendor Options for DHCPv4 RFC3942Standard Dec 2004 Reclassifying DHCPv4 Options RFC4014Standard Feb 2005 RADIUS Attributes Sub-option for the DHCP Relay Agent Information Option RFC3993Standard Mar 2005 DHCP Subscriber ID Suboption for the DHCP Relay Agent Option RFC4030Standard Apr 2005 The Authentication Suboption for the DHCP Relay Agent Option RFC4039Standard Apr 2005 Rapid Commit Option for the Dynamic Host Configuration Protocol version 4 (DHCPv4) RFC4076 I May 2005 Renumbering Requirements for Stateless Dynamic Host Configuration Protocol for IPv6 (DHCPv6) RFC4075Standard May 2005 Simple Network Time Protocol (SNTP) Configuration Option for DHCPv6 RFC4174Standard Sep 2005 The IPv4 Dynamic Host Configuration Protocol (DHCP) Options for the Internet Storage Name Service RFC4242Standard Dec 2005 Information Refresh Time Option for Dynamic Host Configuration Protocol for IPv6 (DHCPv6) RFC4280Standard Dec 2005 Dynamic Host Configuration Protocol (DHCP) Options for Broadcast and Multicast Control Servers RFC4243Standard Dec 2005 Vendor-Specific Information Suboption for the Dynamic Host Configuration Protocol (DHCP) Relay Agent Option RFC4361Standard Feb 2006 Node-Specific Client Identifiers for Dynamic Host Configuration Protocol Version Four (DHCPv4) RFC4388 PS Feb 2006 Dynamic Host Configuration Protocol (DHCP) Leasequery RFC4436 PS Mar 2006 Detecting Network Attachment in IPv4 (DNAv4) RFC4477 I May 2006 Dynamic Host Configuration Protocol (DHCP): IPv4 and IPv6 Dual-Stack Issues RFC4580 PS Jun 2006 Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Subscriber-ID Option RFC4649 PS Aug 2006 Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Relay Agent Remote-ID Option RFC4704 PS Oct 2006 The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Client Fully Qualified Domain Name (FQDN) Option RFC4703 PS Oct 2006 Resolution of Fully Qualified Domain Name (FQDN) Conflicts among Dynamic Host Configuration Protocol (DHCP) Clients RFC4702 PS Oct 2006 The Dynamic Host Configuration Protocol (DHCP) Client Fully Qualified Domain Name (FQDN) Option RFC4578 I Nov 2006 Dynamic Host Configuration Protocol (DHCP) Options for the Intel Preboot eXecution Environment (PXE) RFC4833 PS Apr 2007 A Timezone Option for DHCP RFC5010 PS Sep 2007 The Dynamic Host Configuration Protocol Version 4 (DHCPv4) Relay Agent Flags Suboption RFC5007 PS Sep 2007 DHCPv6 Leasequery RFC4994 PS Sep 2007 DHCPv6 Relay Agent Echo Request Option RFC5071 I Dec 2007 Dynamic Host Configuration Protocol Options Used by PXELINUX RFC5107 PS Feb 2008 DHCP Server Identifier Override Suboption RFC5192 PS May 2008 DHCP Options for Protocol for Carrying Authentication for Network Access (PANA) Authentication Agents RFC5460 PS Feb 2009 DHCPv6 Bulk Leasequery RFC5970 PS Sep 2010 DHCPv6 Options for Network Boot RFC6148 PS Feb 2011 DHCPv4 Lease Query by Relay Agent Remote ID