[dhcwg] Issues raised during last call for DHCPv6 specification
Ralph Droms <rdroms@cisco.com> Tue, 22 January 2002 10:35 UTC
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Date: Tue, 22 Jan 2002 05:24:27 -0500
To: dhcwg@ietf.org
From: Ralph Droms <rdroms@cisco.com>
Cc: ipng@sunroof.eng.sun.com
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Subject: [dhcwg] Issues raised during last call for DHCPv6 specification
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The following issues were raised during the last call for the DHCPv6 spec <draft-ietf-dhc-dhcpv6-22.txt>; I will kick off separate discussion threads for each open issue later today. - Ralph Droms Open issues ----------- * We've experienced a proliferation of DHCPv6 options. Should all options *not* used in the base protocol be moved out to separate drafts? * Does DHCPv6 need a "default routes" option? * Does DHCPv6 need a "static routes" option? * Does DHCPv6 need an FQDN option (basically identical to proposed DHCPv4 FQDN option)? * Other options: - NTP servers - NIS servers - NIS+ servers - Subnet selection - NIS domain name - NIS+ domain name - IEEE 1003.1 POSIX timezone - SLP directory agent - SLP service scope * Should the DHCPv6 option codes start at 256 to avoid overlap with DHCPv4 option codes; overlap of option codes would be an issue for the DHCID RR. * What error codes may a server send in response to an Information-Request message? * Should the Decline message have error codes defining the reason for the Decline? * Does the Information-Request message require a DUID? Could the "MUST" in the third paragraph of 18.1.5 be changed to "SHOULD"? If a DUID "SHOULD" be included, text needs to be added pointing out the client-specific information (based on identifying the client with a DUID) cannot be returned if a DUID is not included. * Is a client required to implement the Reconfigure message - supporting Reconfigure will require that the client maintain state. * Do we want to allow a client to request that more normal addresses be added to an IA, perhaps through use of the equivalent of the RTA option? * DHCP/DDNS interaction * Is the text in section 17.1.3 sufficient? Changes to be made in -23 ------------------------- * Editorial changes: - Change "Inform message" to "Information-request message" and "INFORM" to "INFORMATION-REQUEST" throughout the document - In the list of DHCP messages in section 7, fix Reconfigure to start Renew/Reply or Inform/Reply sequence (not Request/Reply) - Fix page 10 (which is blank in -22 draft) - In third paragraph of section 14, change "Requested Temporary Addresses Option 22.5" to "Requested Temporary Addresses Option (see section 22.5)" - Change "Rebind" to "Inform" in the last paragraph of section 18.1.5 (cut-and-paste error) - Fix redundancy between sections 18.2.5 and 18.2.8 - Edit third paragraph of section 19.2 to delete references to IAs - In section 19.3.4, change "Rebind or Information-Request" to "Renew or Information-Request" - Change last sentence of section 22.5 to: "A client MUST only include this option when it wants to have additional temporary address allocated; a client SHOULD NOT send this option if 'num-requested' is 0". - Edit section 22.14 to indicate that the server-address field is in the fixed-format part of the DHCP message, not the unicast option - Clarify the text in section 22.19 to indicate that the 'user class data' items are carried in the data area of the 'user class option' * Clarify text in section 13 about address selection based on source of message from client * Remove references to "IAs" in section 19.2 * Fix chart in Appendix B to allow DSTM option in same messages as IA option * Modify SIP server option according to input from Henning Schulzrinne * Require that the DUID option appear before any IA options to improve processing efficiency * Require that the authentication option be first in th elist of options to reduce the work that a server must expend before discarding a message that fails authentication (reduces effect of denial of service attacks) * Clean up text specifying selection of address by server to insert into 'server-address' field * Clarify that a server MAY return fewer temporary addresses than requested by the client and MUST return AddrUnavail only if no temporary addresses are available * Clarify that a client MUST include all requested options in an ORO and MAY include suggested values by including specific options; also, the server MAY ignore suggestions from client and the client MUST use whatever the server returns * Clarify that a server MAY renew only some of the IAs sent by a client * Change DUID/VUID to have a length field to allow for longer IDs _______________________________________________ dhcwg mailing list dhcwg@ietf.org https://www1.ietf.org/mailman/listinfo/dhcwg