ISC DHCP site specific options

Neff, Glen glen.neff at
Fri Feb 15 19:49:28 UTC 2013

You can also put different domain, domain-name, domain-name-servers, etc. options inside each subnet stanza.


 * Glen R. J. Neff
 * USD Lab Operations Infrastructure Team
 * glen.neff at
 * EMC^2 == E^2
From: at [ at] On Behalf Of James Jalbert [jjalbert at]
Sent: Friday, February 15, 2013 2:43 PM
To: dhcp-users at
Subject: Re: ISC DHCP site specific options

Not sure if this is what you are looking for, but site options are set in the dhcpd.conf file. Here you can tell the server what to give for routers based on subnet, name server and so on. I have inclided some snips of my config for you to see.

option domain-name-servers,,;
option domain-search "mydomain", "oher domain";

# Subnet A
subnet netmask {
        option routers;

# Subnet B
subnet netmask {
        option routers;

Hope this helps you.

James Jalbert
Network Administrator
Eastern Aroostook RSU #39
Phone: 207-493-4246
E-Mail: jjalbert at

>>> Laxmikant Rashinkar <lk at> 2/15/2013 2:37 PM >>>

I'm hoping someone can help me with this issue because I was not able to
find anything via google.

I'm using ISC DHCP server on a Linux 32bit system.

1) How do I configure site specific options?

2) when a Linux client successfully gets a DHCP address from this
server, where can I find the site specific options received from the
DHCP server (or how do I parse them)

thanks for your help
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