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RE: [dhcwg] RFC 3633 Question



David: In a multiple relay (well, really router since we're talking about routing) situation, the routers need to have some protocol to communicate with each other and it is assumed that is how that is handled. This is no different than the initial lease (which likely is communicated via only one path); it is no different than other learned routes. If you have multiple partners participating, you need to have some way to distribute the information between them. This is left to the routers and is not up to DHCP to do, IMHO. Unless you have the DHCP server itself participate in the routing protocols, you really have no other options? If you were designing this, what would you do? - Bernie -----Original Message----- From: David W. Hankins [mailto:David_Hankins at isc.org] Sent: Thursday, January 04, 2007 4:25 PM To: dhcwg at ietf.org Subject: Re: [dhcwg] dhc wg last call on agent-ASCII" Content-Transfer-Encoding: quoted-printable
In IPv6, routers communicate the routing information via Routing Advertisements (see RFCs 2461 and 2462). There is no need for DHCPv6 to do this. (And if you don't have a router, why do you need any routing information.) This type of functionality (Routing Advertisements) doesn't really exist in IPv4, hence DHCPv4 needed to communicate this information.
 
Prefix delegation is primarily design for use by routers, not hosts (unless a host is also serving as a router).
 
- Bernie


From: Archimedes S. Gaviola [mailto:agaviola at infoweapons.com]
Sent: Friday, January 05, 2007 12:53 AM
To: dhcwg at ietf.org
Subject: [dhcwg] RFC 3633 Question

Hi! Based on RFC 3633 - IPv6 Prefix Options for DHCPv6, the specified nodes involved in the operation are routers such as the requesting router - the router that acts as a DHCP client that is requesting for prefix(es) and a delegating router that acts as the DHCP server. My question are, thus the option (IA_PD) mentioned here is only intended when DHCP is running on a router ( a packet forwarding node) and not on a host ( non-forwarding packet node)?  Is there a DHCPv6 option for specifying gateway or router just like in IPv4 when a DHCPv6 is running on a non-forwarding packet node, in which it will provide options for routers?
 
Thank you very much.
 
Archimedes S. Gaviola
Network Engineer
InfoWeapons Corporation
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