Question

DHCP/DNS not returning name server to clients

Asked by: deal

I've set up a local DNS/DHCP on debian but my clients are not getting their name servers set through DHCP.

/etc/bind/zones/rev.1.168.192.in-addr.arpa:
$TTL 10800
@ IN SOA staging.home. me@gmail.com. (
 00000002       ; serial
 7200           ; refresh
 7200           ; retry
 1814400        ; expire
 10800          ; ttl
 )

@ NS staging.
6 IN PTR staging.home.

/etc/bind/zones/home.db
$TTL 10800
@ IN SOA staging.home. me@gmail.com. (
00000002 ; serial
7200     ; refresh
7200     ; retry
1814400  ; expiry
10800    ; ttl
)

@ NS staging

staging    A    192.168.1.6
*.staging    A    192.168.1.6

/etc/bind/named.conf.local:
zone "home" {
 type master;
 file "/etc/bind/zones/home.db";
 };

zone "1.168.192.in-addr.arpa" {
 type master;
 file "/etc/bind/zones/rev.1.168.192.in-addr.arpa";
};

/etc/resolv.conf:
search home
nameserver 192.168.1.6

># nslookup
Server:      192.168.1.6
Address:      192.168.1.6#53

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2009-09-06 at 03:46:02ID24710795
Tags

DNS

,

DHCP

,

name server

Topics

Linux Networking

,

Networking Protocols

Participating Experts
2
Points
500
Comments
10

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. BIND / PTR - Records / extern nameserver
    Hello, I have a server which has currently 6-7 IP's. The nameserver for some domains served by this server is extern. I wanted to do PTR Records for the IP's of this server to point to a domain but it's not working as I want. I can do a "nslookup" or "host&q...
  2. nslookup
    When I use nslookup I get DNS timed out messages before it displays the following information: Can't find server name for 192.168.1.2 : Timed out Default Serve unknown Address: 192.168.1.2 However when I type in my computer name I get Server: unknown Address: 192.168.1.2...
  3. nslookup
    Hi I know we can use nslookup on various websites that offer this facility. However i was wondering how can we use nslookup on localhost to send DNS queries to various DNS servers thru coman prompt.I have tcp/ip installed. What are the various "types" available in ...
  4. No Nslookup
    Ok I think this is an easy fix. If I want to do an nslookup on an IP address in my domain I get a Non-existent domain. >nslookup 10.1.10.3 Server: domain.DNS.com Address: 10.1.10.98 *** domain.dns.com can't find 10.1.10.3: Non-existent domain however if i ping 10.1.10....
  5. Microsoft DNS PTR issue
    We use Microsoft DNS on Server 2003 I created PTR record under "reverse Lookup Zone" for an email server the file called 193.25.216.in-addr.arpa.dns (100 PTR smtp.hcidirect.com When I go to DNSstuff.com and other website that resolve DNS they ca...
  6. Using GPO to reduce TTL of A and PTR records created by …
    Hi all, we are experiencing some problems with roaming wireless users, since we have a mainframe that does reverse lookups to authorize access to some applications. So we decide to reduce TTL of records create in the active directory dns by dhcp service to 1 second. The probl...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: NetExpert-WarszawaPosted on 2009-09-06 at 03:55:27ID: 25269412

mv /etc/bind/named.conf.local /etc/bind/named.conf

 

by: dealPosted on 2009-09-06 at 03:58:58ID: 25269419

named.conf has addtional settings, including the line...

include "/etc/bind/named.conf.local";

As a sidenote, this is a continuation of http://www.experts-exchange.com/Networking/Protocols/Q_24709429.html (see paragraph with PROBLEM from my 5th comment )

 

by: NetExpert-WarszawaPosted on 2009-09-06 at 11:57:23ID: 25271044

Do you see any errors in a log file when named starts?
Are the zones loaded correctly?
Can you resolve on the server (nslookup was from a client or the server?)?

 

by: KeremEPosted on 2009-09-06 at 15:27:06ID: 25271839

Hi,

First of all you need to change your SOA record in your zone files. @ is a special character for zone files and it will be expanded to your domain name when seen.  So if you leave the "@" in our email address then it will be replaced with your domain name immediately.

So your SOA should read :

@           IN SOA   staging.home. me.gmail.com. (

                                              
1:

Select allOpen in new window

 

by: KeremEPosted on 2009-09-06 at 15:42:48ID: 25271887

Please modify all your zoen files as follows:

/etc/bind/zones/rev.1.168.192.in-addr.arpa:
$TTL 10800
@                    IN        SOA   staging.home. me@gmail.com. (
                       2009090701       ; serial  
                       7200                   ; refresh
                       7200                   ; retry
                       1814400             ; expire
                       10800                 ; ttl
 )

                       IN  NS staging.home.            ; Important to finish with dot toherwise will be completed
                                                                    ; by  "@" = rev.1.168.192.in-addr.arpa
                                                                    ; if left as you did "staging." it would search for a TLD called
                                                                    ; staging not gonna be added with .local
6                     IN  PTR staging.home.

/etc/bind/zones/home.db
$TTL 10800
@                  IN SOA staging.home. me@gmail.com. (
                     2009090701    ; serial
                     7200                ; refresh
                     7200                ; retry
                    1814400           ; expiry
                    10800               ; ttl
)

                     IN NS staging

staging          IN     A    192.168.1.6

*                    IN     A    192.168.1.6             ; it is enough to put "*" here en anything you add here
                                                                    ; including  any tirtiary doma will be replied with the
                                                                    ; address    

/etc/bind/named.conf.local:
zone "home" {
 type master;
 file "/etc/bind/zones/home.db";
 };

zone "1.168.192.in-addr.arpa" {
 type master;
 file "/etc/bind/zones/rev.1.168.192.in-addr.arpa";
};

/etc/resolv.conf:
search home
nameserver 192.168.1.6

 

by: KeremEPosted on 2009-09-06 at 15:57:15ID: 25271939

Then edit your /etc/dhcpd.conf file and make sure that your zone includes:

        option domain-name-servers      192.168.1.6;

in the configuration..

Your /etc/dhcpd.conf should be similar to the snippet below. Here I am assuming that your default gateway is 192.168.1.1. The use of dynamic-bootp flag is optional and it it exists it would mean that the addresses will be assigned for both dhcp and bootp requests (of course bootp will require additional configuration f you need it)

For more information on DNS configuration see these RFC documents:

RFC 1912 http://www.faqs.org/rfcs/rfc1912.html
RFC 2308 http://www.faqs.org/rfcs/rfc2308.html

ddns-update-style interim;
ignore client-updates;
 
subnet 192.168.1.0 netmask 255.255.255.0 {
        option routers                  192.168.1.1;
        option subnet-mask              255.255.255.0;
 
        option domain-name              "home";
        option domain-name-servers      192.168.1.1;
 
        option time-offset              -18000; # Eastern Standard Time
 
        range dynamic-bootp 192.168.1.128 192.168.1.254;
        default-lease-time 21600;
        max-lease-time 43200;
 
}

                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:

Select allOpen in new window

 

by: dealPosted on 2009-09-06 at 19:00:53ID: 25272379

I've finally solved this... final config files:

/etc/bind/zones/home.db:

$TTL 10800
home. IN SOA staging.home. me@gmail.com. (
20090802 ; serial
7200     ; refresh
7200     ; retry
1814400  ; expiry
10800    ; ttl
)

@ NS staging

staging A 192.168.1.6
*.staging A 192.168.1.6

/etc/bind/zones/rev.1.168.192.in-addr.arpa:

$TTL 10800
@ IN SOA staging.home. me.gmail.com. (
 00000002       ; serial
 7200           ; refresh
 7200           ; retry
 1814400        ; expire
 10800          ; ttl
 )

@ NS staging.home.
6 IN PTR staging.home.

/etc/dhcp3/dhcpd.conf:

ddns-update-style interim;
ignore client-updates;
 
subnet 192.168.1.0 netmask 255.255.255.0 {
        range 192.168.1.15 192.168.1.254;
        option routers                  192.168.1.1;
        option subnet-mask              255.255.255.0;
 
        option domain-name              "home";
        option domain-name-servers      192.168.1.6;
        option broadcast-address 192.168.1.255;
 
        default-lease-time 21600;
        max-lease-time 43200;
 
}

apache.conf (end):

<VirtualHost *:80>
DocumentRoot /var/www/
ServerName staging
</VirtualHost>

<VirtualHost *:80>
DocumentRoot /var/www/website1/webroot/
ServerName website1.staging
ServerAlias website1.staging.home
</VirtualHost>

------

now http://website.staging and http://website1.staging.home both point to website1,

http://staging and http://staging.home both point to the apache doc root on staging machine. And this all happens for any dhcp client.

        option domain-name              "home";

in /etc/dhcp3/dhcpd.conf was key to getting clients to resolve the address shortcuts (http://staging, instead of http://staging.home) that put...

        DNS Suffix Search List. . . . . . : home

on windows (C:\>ipconfig /all) and set "Search Domains" to "home" on OSX.

The zone file changes you suggested didn't work, they actually stopped the DNS from resolving any internal names. Awarding answer to solution :)

 

by: dealPosted on 2009-09-06 at 19:03:14ID: 31625411

Accepted answer contained solution:

        option domain-name              "home";

 

by: KeremEPosted on 2009-09-06 at 19:26:11ID: 25272461

> The zone file changes you suggested didn't work, they actually stopped the DNS from resolving any > internal names.

This is imposible may be there were some typos. The fina lversion should be:



/etc/bind/zones/home.db:
 
$TTL 10800
; Here the at sign macro equals to home since the zone is called home
; you should avoid using at sign in anywhere except you'll need macro
; expansion.
; query your soa with a command like this:
; nslookup
; > set type=SOA
; name
 
@             IN       SOA staging.home. me.gmail.com. (
              2009090802 ; serial
              7200     ; refresh
              7200     ; retry
              1814400  ; expiry
              10800    ; ttl
)
 
; here I've omitted the @ because till you use a name all designators
; would mean the initial nam e = at sign = home
; no need to repeat.
 
              IN  NS staging
; Since at sign is equal to home the domain will be completed as 
; "staging.home". You'd better use staging.home. for clarity though.
 
 
staging           IN  A 192.168.1.6
*.staging         IN  A 192.168.1.6
 
; the asterisk must respond to anything ending with the domain .home
; and not contained in this zone file with the IP adress regardless of 
; it is 3rd or 4th level domain. (i.e., xxx.home or www.staging.home)
; so it is better to keep it *.staging since it will only reply to 
; xxx.staging.home but not xxx.home this way.
 
/etc/bind/zones/rev.1.168.192.in-addr.arpa:
 
$TTL 10800
@               IN SOA staging.home. me.gmail.com. (
                2009090802       ; serial
                7200           ; refresh
                7200           ; retry
                1814400        ; expire
                10800          ; ttl
                )
 
                IN NS staging.home.
 
6               IN PTR staging.home.

                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:

Select allOpen in new window

 

by: KeremEPosted on 2009-09-06 at 19:27:32ID: 25272467

All these and more are explained in RFC 1912.

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...