Re: prefix length determination for DHCPv6

2007-08-16 Thread Mark Smith
On Wed, 15 Aug 2007 15:13:06 +0200 Iljitsch van Beijnum [EMAIL PROTECTED] wrote: On 15-aug-2007, at 12:15, Mark Smith wrote: I disagree. For better or for worse, the notion of a subnet mask going along with an interface address is deeply ingrained in the way IP is implemented. Separating

Re: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread David W. Hankins
On Wed, Aug 15, 2007 at 02:16:31PM -0400, James Carlson wrote: Ole Troan writes: If you delegate a prefix, then you route to the prefix -- best match. Yes, but how does that route get in the table, and what next-hop is set? You have to know your customer's address eventually.

Re: prefix length determination for DHCPv6

2007-08-16 Thread Ignatios Souvatzis
On Thu, Aug 16, 2007 at 07:18:47AM +0930, Mark Smith wrote: I'm don't think I'm going down it. You seemed to be questioning why subnets were fixed length, I provided most likelyreasons why, including evidence that the original design of IPv4, pre-classes, also followed this model. I think

Re: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread James Carlson
David W. Hankins writes: On Wed, Aug 15, 2007 at 10:33:16AM -0400, James Carlson wrote: and it needs to be able to Confirm the use of addresses, which it may not have allocated. That doesn't make sense to me. The DHCPv6 Confirm message is for confirming an address lease. If the

RE: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread Hemant Singh (shemant)
Wrt: Either way: You need to know the customer's address. A DHCPv6 server off in the weeds does not necessarily know what link local address the client is using (because it might change without notification). If the client performed DHCPv6 with server, and the deployment includes a relay

RE: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread Hemant Singh (shemant)
Wrt: I'm sorry - this is a DHCPv6 protocol mechanic, something only a DHCP geek would know. The relay messages' 'link-address' field is central to the server's calculation of the client's location (which broadcast domain they're attached to). Basically it's how you know which addresses are

Revised 6MAN Charter

2007-08-16 Thread Brian Haberman
All, I have revised the charter for the proposed IPv6 maintenance WG based on comments received. Please review. Regards, Brian IPv6 Maintenance Working Group (6man) Chair(s): Robert Hinden [EMAIL PROTECTED]

Re: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread David W. Hankins
On Thu, Aug 16, 2007 at 08:53:10AM -0400, James Carlson wrote: I don't see how the server could possibly construct a valid Reply message otherwise. It needs to include IA Address options, and those The server does not include IA_*'s nor IAADDRs beneath them. It only MUST include a

Re: [dhcwg] Re: prefix length determination for DHCPv6

2007-08-16 Thread Iljitsch van Beijnum
On 17-aug-2007, at 0:51, Hemant Singh (shemant) wrote: OK, Iljitsch. But hasn't Bernie already responded to this one? What if prefix length is fat-fingered at the DHCPv6 server by the admin and a length L1 is sent in DHCPv6 messages but the router RA sent a PIO for the same prefix with prefix