Configuring dhclient for DHCP Vendor Specific Options

David W. Hankins David_Hankins at
Mon Aug 6 16:02:39 UTC 2007

On Sun, Aug 05, 2007 at 01:49:33AM +0530, Parag Nandedkar wrote:
> If I mention following two lines in dhcpclient.conf file :
> send vendor-class-identifier "ExampleClass";
> vendor option space Example;
> It says, vendor option space Example not found.

Did you include the definition of that space?

> How the client is going to accept these vendor specific parameters ?

I'm not sure I understand this question.

> Do I need to set some other parameter so that client will request vendor
> specific parameters ?

You need to add vendor-encapsulated-options to the parameter request
list.  This is done through the 'request' configuration statement,
which is mentioned in 'man dhclient.conf'.

> Where can I see the parameters sent by the server ?

At runtime, dhclient will execute /sbin/dhclient-script, and the
parameters will be in an environment variable according to their

Ash bugud-gul durbatuluk agh burzum-ishi krimpatul.
Why settle for the lesser evil?
David W. Hankins	"If you don't do it right the first time,
Software Engineer		     you'll just have to do it again."
Internet Systems Consortium, Inc.		-- Jack T. Hankins

More information about the dhcp-users mailing list