[Dibbler] Question: Does DHCP Server supoports "Prefix Delegation reconfiguration"

Rapoport, MichaelX michaelx.rapoport at intel.com
Thu Jun 27 10:12:45 CEST 2013


Hello,

When do you intend to support the Reconfigure ?
Shall I open any request for this capability ?
It becomes requested by Cable LABs new eRouter requirements.

Thank you,
Sincerely,
Michael.


-----Original Message-----
From: dibbler-bounces at klub.com.pl [mailto:dibbler-bounces at klub.com.pl] On Behalf Of thomson
Sent: Saturday, March 30, 2013 20:56
To: Dibbler users list
Subject: Re: [Dibbler] Question: Does DHCP Server supoports "Prefix Delegation reconfiguration"

On Wed, 27 Mar 2013 10:32:49 +0000, "Rapoport, MichaelX"
<michaelx.rapoport at intel.com> wrote:
> Hello.
> 
> Does the DHCP Server supports the "Prefix Delegation reconfiguration" 
> as defined in RFC 3633, p. 13 ?
Reconfigure is not yet officially supported. There's reconfigure branch in git, but it is a work in progress. It may or may not work. Keep in mind that reconfigure is a much more broader functionality that is not specific to PD and covers all other aspects of the client (or delegating router). You may try this code from branch, but don't be disappointed if it does not work for you.

> How can I revoke the Delegated Prefix ?
Start the server, have it delegate a prefix to your device. Stop the server and configure it to no longer assign prefixes (e.g. comment out pd-class).
When requesting router renews, server will not renew its prefixes.

On a somewhat related note, I've made some progress on CONFIRM support on server side. Previously server didn't have enough information about the network to respond to CONFIRMs, so I added a new parameter called subnet.
It is now possible to specify which subnet is valid on a given interface.
It is not usable for you yet, as server uses this information for selecting relays, but not to respond to CONFIRMs yet. But it is likely that I'll implement this fix sometime next week. This will address bugs #240 and #259.

Cheers,
Tomek

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