Nicholas F Miller nicholas.miller at Colorado.EDU
Thu Sep 8 14:31:07 UTC 2011

Lovely, gotta love M$.

So what does this mean for sending multiple search domains? It is from the docs for DHCP 4.2.2. It looks like an attempt to allow multiple domains by using domain-name. I've tried using this with no luck. It complains if you use a domain-list:

DHCP 4.2.2


New Features

- Strict checks for content of domain-name DHCPv4 option can now be   configured during compilation time. Even though RFC2132 does not allow   to store more than one domain in domain-name option, such behavior is   now enabled by default, but this may change some time in the future.  See ACCEPT_LIST_IN_DOMAIN_NAME define in includes/site.h.  [ISC-Bugs #24167]

#cat dhcp-4.2.2/includes/site.h


/* Define this if you want to allow domain list in domain-name option.
   RFC2132 does not allow that behavior, but it is somewhat used due
   to historic reasons. Note that it may be removed some time in the
   future. */


#dhcpd -t
Internet Systems Consortium DHCP Server 4.2.2
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit
dhcpd.conf line 35: semicolon expected.
option domain-name "",
Configuration file errors encountered -- exiting

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the README file.


Nicholas Miller, ITS, University of Colorado at Boulder

On Sep 7, 2011, at 3:21 PM, Christopher Cain wrote:

> Domain Search is option 135.  Windows clients do not request this option.  The only method to add this option to Windows clients is via GPO.
> Unix/Linux/Mac clients do request option 135, however.
> Christopher Cain
> chris at
> On 2011-09-07, at 16:14 , dhcp-users-request at wrote:
>> From: Nicholas F Miller <nicholas.miller at Colorado.EDU>
>> Subject: domain-search?
>> Date: 7 September, 2011 10:54:42EDT
>> To: Users of ISC DHCP <dhcp-users at>
>> Reply-To: Users of ISC DHCP <dhcp-users at>
>> We have been testing domain-search and are having some issues. Do Windows machines support domain-search. From our testing it looks like only *nix machines support this option. When we use domain-search the Windows machines do not get any DNS suffix. Macs and *unix work fine. We have tried it globally and per subnet. The only thing that works for Windows machines it domain-name.
>> _________________________________________________________
>> Nicholas Miller, ITS, University of Colorado at Boulder
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> dhcp-users mailing list
> dhcp-users at

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