Can hosts get customized option value when they use DHCPINFORM messages?

[Randall C Grimshaw]

we are talking about custom values for values which also have a subnet or global context which replace the custom values when returned along with a dhcpinform query because the lease record does not track the custom values assigned and the inform becomes less than informing.



Randall Grimshaw rgrimsha at syr.edu<mailto:rgrimsha at syr.edu>

________________________________
From: dhcp-users-bounces+rgrimsha=syr.edu at lists.isc.org [dhcp-users-bounces+rgrimsha=syr.edu at lists.isc.org] on behalf of Chengyu Fan [chengy.fan at gmail.com]
Sent: Wednesday, August 01, 2012 6:08 PM
To: Users of ISC DHCP
Subject: Re: Can hosts get customized option value when they use DHCPINFORM messages?



On Wed, Aug 1, 2012 at 2:34 PM, Randall C Grimshaw <rgrimsha at syr.edu<mailto:rgrimsha at syr.edu>> wrote:

apparently not. this causes consternation when clients are initially given a custom value at the initial lease and the dhcp inform changes it to a default as you observed. the best solution I have found is to tell the server it is not authoritative for subnets affected by this. version 4.x.x is required for this to work but contrary to the documentation will successfully ignore the troublesome dhcpinform requests.

If the client A needs customized configuration, and other clients that are in the same subnet have different configuration.
Will this way affect others' result? And it seems like that the client A will not get any configuration by sending DHCPINFORM in your way?

Thanks,


Randall Grimshaw rgrimsha at syr.edu<mailto:rgrimsha at syr.edu>

________________________________
From: dhcp-users-bounces+rgrimsha=syr.edu at lists.isc.org<mailto:syr.edu at lists.isc.org> [dhcp-users-bounces+rgrimsha=syr.edu at lists.isc.org<mailto:syr.edu at lists.isc.org>] on behalf of Chengyu Fan [chengy.fan at gmail.com<mailto:chengy.fan at gmail.com>]
Sent: Wednesday, August 01, 2012 1:53 PM
To: dhcp-users at lists.isc.org<mailto:dhcp-users at lists.isc.org>
Subject: Can hosts get customized option value when they use DHCPINFORM messages?

Hi~

Does anyone know if we can let different clients get different option value when they query the DHCP server using DHCPINFORM message?

I know that we can let a client get customized configuration(different option values) using keyword "host".
But it seems not work when the client uses DHCPINFORM message to query the server. When I try it, the server always gives me the configuration in the subnet. Can I let the server return the configuration based on the MAC address even when the client use DHCPINFORM?

Thanks,


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Regards,
Chengyu Fan

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Regards,
Chengyu Fan
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