Setting up a basic DNS server for a domain

Setting up a basic DNS server for a domain
Revision 1.1.2

Craig Richmond
3rd August 1993

Additional comments by Ronny H. Kavli

About this document

This document is starting to be really dated. It covers BIND-4 specific issues mostly. You should really use BIND-8 instead. I have written this file because it seems that the same questions seem to pop up time and time again and when I had to install DNS from scratch the first time, we found very little to help us.

This document covers setting up a Domain Name Server with authority over your domain and using a few of the more useful but less well known (hopefully this document will take care of that) features of nslookup to get information about the DNS and to work out why yours isn't working.

If you are using a Sun Workstation and you want to make NIS interact with the DNS, then this is not the FAQ for you (but it may well be when you try to set up the DNS). Mark J. McIntosh <Mark.McIntosh@engr.UVic.CA> points out that it is included in the comp.sys.sun.admin FAQ and for the benefit of those of you who can't get that (it is posted in comp.sys.sun.admin, comp.sys.sun.misc, comp.unix.solaris, comp.answers and news.answers) I have included the relevant parts at the bottom in Appendix C.


1 An Overview of the DNS

2 Installing the DNS

2.1 The Boot File 2.2 The Cache File 2.3 The Forward Mapping File 2.4 The Reverse Mapping File

3 Delegating authority for domains within your domain

4 Troubleshooting your named

4.1 Named doesn't work! What is wrong? 4.2 Local has noticed change, but nobody else has new info 4.3 I can see their info, but they can't see mine 4.4 Forward domain works, but not backwards

5 How to get useful info from nslookup

5.1 Getting name to number mappings 5.2 Getting number to name mappings 5.3 Finding where mail goes when a machine has no IP number 5.4 Getting a list of machines in a domain from nslookup

6 Appendicies

6.1 Appendix A sample root.cache file 6.2 Appendix B Excerpt from RFC 1340 - Assigned Numbers - July 1992 6.3 Appendix C Installing DNS on a Sun when running NIS 6.4 RFC-1034 (Domain Names - Concepts and Facilities 6.5 RFC-1035 (Domain Names - Implementation and Specification

1 An Overview of the DNS:

The Domain Name System is the software that lets you have name to number mappings on your computers. The name is the number and vice versa. This is achieved through the DNS. The DNS is a heirarchy. There are a small number of root domain name servers that are responsible for tracking the top level domains and who is under them. The root domain servers between them know about all the people who have name servers that are authoritive for domains under the root.

Being authoritive means that if a server is asked about something in that domain, it can say with no ambiguity whether or not a given piece of information is true. For example. We have domains x.z and y.z. There are by definition authoritive name servers for both of these domains and we shall assume that the name server in both of these cases is a machine called nic.x.z and nic.y.z but that really makes no difference.

If someone asks nic.x.z whether there is a machine called a.x.z, then nic.x.z can authoritively say, yes or no because it is the authoritive name server for that domain. If someone asks nic.x.z whether there is a machine called a.y.z then nic.x.z asks nic.y.z whether such a machine exists (and caches this for future requests). It asks nic.y.z because nic.y.z is the authoritive name server for the domain y.z. The information about authoritive name servers is stored in the DNS itself and as long as you have a pointer to a name server who is more knowledgable than yourself then you are set.

When a change is made, it propogates slowly out through the internet to eventually reach all machines. The following was supplied by Mark Andrews

So with a refresh of 3 hours and a minimum of a day, you can expect everything to be working a day after it is changed. If you have a longer minimum, it may take a couple of days before things return to normal.

There is also a difference between a zone and a domain. The domain is the entire set of machines that are contained within an organisational domain name. For example, the domain contains all the machines at the University of Western Australia. A Zone is the area of the DNS for which a server is responsible. The University of Western Australia is a large organisation and trying to track all changes to machines at a central location would be difficult. The authoritive name server for the zone delegates the authority for the zone to Machine is in the zone that decel is authoritive for. Machine is in the zone that is authoritive for.

2 Installing the DNS:

First I'll assume you already have a copy of the Domain Name Server software. It is probably called named or in.named depending on your flavour of unix. I never had to get a copy, but if anyone thinks that information should be here then by all means tell me and I'll put it in. If you intend on using the package called BIND, then you should be sure that you get version 4.9.x, which is the most recent version at this point in time.

2.1 The Boot File:

First step is to create the file named.boot. This describes to named (we'll dispense with the in.named. Take them to be the same) where the information that it requires can be found. This file is normally found in /etc/named.boot and I personally tend to leave it there because then I know where to find it. If you don't want to leave it there but place it in a directory with the rest of your named files, then there is usually an option on named to specify the location of the boot file.

Your typical boot file will look like this if you are an unimportant leaf node and there are other name servers at your site.

directory	/etc/namedfiles

cache		.	       				root.cache
primary				ecel.uwa.domain
primary			0.0.127.domain
primary			4.95.130.domain
Here is an alternative layout used by Christophe Wolfhugel <> He finds this easier because of the large number of domains he has. The structure is essentially the same, but the file names use the domain name rather than the IP subnet to describe the contents.
directory       /usr/local/etc/bind
cache     .                      p/root
; Primary servers
primary                        p/
primary                  p/
primary              p/127
; Secondary servers
secondary            s/
secondary   s/
secondary      s/
secondary        s/
secondary     s/
secondary          s/
secondary     s/
secondary         s/
secondary    s/
; Secondary for addresses
secondary    s/161.74
secondary   s/134.214
secondary     s/147.250
; Classes C
secondary     s/192.44.56
secondary     s/192.44.57
The lines in the named.boot file have the following meanings.


This is the path that named will place in front of all file names referenced from here on. If no directory is specified, it looks for files relative to /etc.


This is the information that named uses to get started. Named must know the IP number of some other name servers at least to get started. Information in the cache is treated differently depending on your version of named. Some versions of named use the information included in the cache permenantly and others retain but ignore the cache information once up and running.


This is one of the domains for which this machine is authorative for. You put the entire domain name in. You need forwards and reverse lookups. The first value is the domain to append to every name included in that file. (There are some exceptions, but they will be explained later) The name at the end of the line is the name of the file (relative to /etc of the directory if you specified one). The filename can have slashes in it to refer to subdirectories so if you have a lot of domains you may want to split it up.

BE VERY CAREFUL TO PUT THE NUMBERS BACK TO FRONT FOR THE REVERSE LOOK UP FILE. The example given above is for the subnet whose IP address is 130.95.4.*. The reverse name must be It must be backwards and it must end with If your reverse name lookups don't work, check this. If they still don't work, check this again.


This is a list of IP numbers for forward requests for sites about which we are unsure. A good choice here is the name server which is authoritive for the zone above you.

secondary (This line is not in the example, but is worth mentioning.)

A secondary line indicates that you wish to be a secondary name server for this domain. You do not need to do this usually. All it does is help make the DNS more robust. You should have at least one secondary server for your site, but you do not need to be a secondary server for anyone else. You can by all means, but you don't need to be. If you want to be a secondary server for another domain, then place the line

secondary  sec/
in your named.boot. This will make your named try the servers on both of the machines specified to see if it can obtain the information about those domains. You can specify a number of IP addresses for the machines to query that probably depends on your machine. Your copy of named will upon startup go and query all the information it can get about the domain in question and remember it and act as though it were authoritive for that domain.

Next you will want to start creating the data files that contain the name definitions.

2.2 The cache file:

You should always use the latest cache file. The simplest way to do this is by using dig(1) this way:

dig . ns > root.cache

You can also get a copy of the cache file by ftp'ing FTP.RS.INTERNIC.NET.

An example of a cache file is located in Appendix A.

2.3 The Forward Mapping file:

The file will be used for the example with a couple of machines left in for the purpose of the exercise. Here is a copy of what the file looks like with explanations following.

; Authoritative data for
@		IN	SOA (
				93071200	; Serial (yymmddxx)
				10800		; Refresh 3 hours
				3600		; Retry   1 hour
				3600000 	; Expire  1000 hours
				86400 )		; Minimum 24 hours
		IN	A
		IN	MX	100  	decel
		IN	MX	150
		IN	MX	200
		IN	MX	200

localhost	IN	A

decel		IN	A
		IN	MX	100	decel
		IN	MX	150
		IN	MX	200
		IN	MX	200

gopher		IN	CNAME

accfin		IN	A
		IN	MX	100	decel
		IN	MX	150
		IN	MX	200
		IN	MX	200

chris-mac	IN	A
The comment character is ';' so the first two lines are just comments indicating the contents of the file.

All values from here on have IN in them. This indicates that the value is an InterNet record. There are a couple of other types, but all you need concern yourself with is internet ones.

The SOA record is the Start Of Authority record. It contains the information that other nameservers will learn about this domain and how to treat the information they are given about it. The '@' as the first character in the line indicates that you wish to define things about the domain for which this file is responsible. The domain name is found in the named.boot file in the corresponding line to this filename. All information listed refers to the most recent machine/domain name so all records from the '@' until 'localhost' refer to the '@'. The SOA record has 5 magic numbers. First magic number is the serial number. If you change the file, change the serial number. If you don't, no other name servers will update their information. The old information will sit around for a very long time.

Refresh is the time between refreshing information about the SOA. Retry is the frequency of retrying if an authorative server cannot be contacted. Expire is how long a secondary name server will keep information about a zone without successfully updating it or confirming that the data is up to date. This is to help the information withstand fairly lengthy downtimes of machines or connections in the network without having to recollect all the information. Minimum is the default time to live value handed out by a nameserver for all records in a zone without an explicit TTL value. This is how long the data will live after being handed out. The two pieces of information before the 5 magic numbers are the machine that is considered the origin of all of this information. Generally the machine that is running your named is a good one for here. The second is an email address for someone who can fix any problems that may occur with the DNS. Good ones here are postmaster, hostmaster or root. NOTE: You use dots and not '@' for the email address.

eg: is correct
and is incorrect.

We now have an address to map to. The address is which happens to be decel, our main machine. If you try to find an IP number for the domain it will get you the machine's IP number. This is a nicety which means that people who have non-MX record mailers can still mail and don't have to find the name of a machine name under the domain to mail.

Now we have a couple of MX records for the domain itself. The MX records specify where to send mail destined for the machine/domain that the MX record is for. In this case we would prefer if all mail for is sent to If that does not work, we would like it to go to because there are a number of machines that might have no idea how to get to us, but may be able to get to uniwa. And failing that, try the site A small number indicates that this site should be tried first. The larger the number the further down the list of sites to try the site is. NOTE: Not all machines have mailers that pay attention to MX records. Some only pay attention to IP numbers, which is really stupid. All machines are required to have MX-capable Mail Transfer Agents (MTA) as there are many addresses that can only be reached via this means.

There is an entry for localhost now. Note that this is somewhat of a kludge and should probably be handled far more elegantly. By placing localhost here, a machine comes into existance called If you finger it, or telnet to it, you get your own machine, because the name lookup returns which is the special case for your own machine. I have used a couple of different DNS packages. The old BSD one let you put things into the cache which would always work, but would not be exported to other nameservers. In the newer Sun one, they are left in the cache and are mostly ignored once named is up and running. This isn't a bad solution, its just not a good one.

Decel is the main machine in our domain. It has the IP number and that is what this next line shows. It also has a HINFO entry. HINFO is Host Info which is meant to be some sort of an indication of what the machine is and what it runs. The values are two white space seperated values. First being the hardware and second being the software. HINFO is not compulsory, its just nice to have sometimes. We also have some MX records so that mail destined for decel has some other avenues before it bounces back to the sender if undeliverable.

It is a good idea to give all machines capable of handling mail an MX record because this can be cached on remote machines and will help to reduce the load on the network. is the gopher server in our division. Now because we are cheapskates and don't want to go and splurge on a seperate machine just for handling gopher requests we have made it a CNAME to our main machine. While it may seem pointless it does have one main advantage. When we discover that our placing terrabytes of popular quicktime movies on our gopher server (no we haven't and we don't intend to) causes an unbearable load on our main machine, we can quickly move the CNAME to point at a new machine by changing the name mentioned in the CNAME. Then the slime of the world can continue to get their essential movies with a minimal interuption to the network. Other good CNAMEs to maintain are things like ftp, mailhost, netfind, archie, whois, and even dns (though the most obvious use for this fails). It also makes it easier for people to find these services in your domain.

We should probably start using WKS records for things like gopher and whois rather than making DNS names for them. The tools are not in wide circulation for this to work though. (Plus all those comments in many DNS implementation of "Not implemented" next to the WKS record)

Finally we have a macintosh which belongs to my boss. All it needs is an IP number, and we have included the HINFO so that you can see that it is in fact a macII running a Mac System. To get the list of preferred values, you should get a copy of RFC 1340. It lists lots of useful information such as /etc/services values, ethernet manufacturer hardware addresses, HINFO defualts and many others. I will include the list as it stands at the moment, but if any RFC superceeds 1340, then it will have a more complete list. See Appendix B for that list.

NOTE: If Chris had a very high profile and wanted his mac to appear like a fully connected unix machine as far as internet services were concerned, he could simply place an MX record such as

	IN	MX	100  decel
after his machine and any mail sent to would be automatically rerouted to decel.

2.4 The Reverse Mapping File

The reverse name lookup is handled in a most bizarre fashion. Well it all makes sense, but it is not immediately obvious.

All of the reverse name lookups are done by finding the PTR record associated with the name So to find the name associated with the IP number, we look for information stored in the DNS under the name They are organised this way so that when you are allocated a B class subnet for example, you get all of the IP numbers in the domain 130.95. Now to turn that into a reverse name lookup domain, you have to invert the numbers or your registered domains will be spread all over the place. It is a mess and you need not understand the finer points of it all. All you need to know is that you put the reverse name lookup files back to front.

Here is the sample reverse name lookup files to go with our example.
;  Reverse mapping of domain names
;  Nobody pays attention to this, it is only so -> localhost.
@		IN	SOA (
				91061801	; Serial (yymmddxx)
				10800		; Refresh 3 hours
				3600		; Retry   1 hour
				3600000 	; Expire  1000 hours
				86400 )		; Minimum 24 hours
;	reverse mapping of domain names
@		IN	SOA (
				92050300	; Serial (yymmddxx format)
				10800		; Refresh	3hHours
				3600		; Retry		1 hour
				3600000		; Expire	1000 hours
				86400 )		; Minimum	24 hours
It is important to remember that you must have a second start of authority record for the reverse name lookups. Each reverse name lookup file must have its own SOA record. The reverse name lookup on the 127 domain is debatable seeing as there is likely to be only one number in the file and it is blatantly obvious what it is going to map to.

The SOA details are the same as in the forward mapping.

Each of the numbers listed down the left hand side indicates that the line contains information for that number of the subnet. Each of the subnets must be the more significant digits. eg the 130.95.4 of an IP number is implicit for all numbers mentioned in the file.

The PTR must point to a machine that can be found in the DNS. If the name is not in the DNS, some versions of named just bomb out at this point.

Reverse name lookups are not compulsory, but nice to have. It means that when people log into machines, they get names indicating where they are logged in from. It makes it easier for you to spot things that are wrong and it is far less cryptic than having lots of numbers everywhere. Also if you do not have a name for your machine, some brain dead protocols such as talk will not allow you to connect.

Since I had this I had one suggestion of an alternative way to do the localhost entry. I think it is a matter of personal opinion so I'll include it here in case anyone things that this is a more appropriate method.

The following is courtesy of (JEP de Bie)

(Craig: It has been suggested by Mark Andrews that this is a bad practice particularly if you have upgraded to Bind 4.9. You also run the risk of polluting the root name servers. This comes down to a battle of idealogy and practicality. Think twice before declaring yourself authorative for the root domain.)

So I not only declare myself (falsely? - probably, but nobody is going to listen anyway most likely [CPR]:-) athorative in the domain but also in the . (root) domain.

  2) the file localhost has:

     $ORIGIN .
     localhost       IN      A

  3) and the file IP127:

     1.0.0   IN      PTR     localhost.

  4) and I have in my own domain file ( the line:

     localhost       IN      CNAME   localhost.
The advantage (elegancy?) is that a query (A) of localhost. gives the reverse of the query of And it also shows that is only a nickname to something more absolute. (While the notion of localhost is of course relative :-)).

And I also think there is a subtle difference between the lines

    primary             IP127
    primary         4.95.130.domain
                                         JEP de Bie

3 Delegating authority for domains within your domain

When you start having a very big domain that can be broken into logical and seperate entities that can look after their own DNS information, you will probably want to do this. Maintain a central area for the things that everyone needs to see and delegate the authority for the other parts of the organisation so that they can manage themselves.

Another essential piece of information is that every domain that exists must have its NS records associated with it. These NS records denote the name servers that are queried for information about that zone. For your zone to be recognised by the outside world, the server responsible for the zone above you must have created a NS record for your machine in your domain. For example, putting the computer club onto the network and giving them control over their own part of the domain space we have the following:

The machine authorative for is mackerel and the machine authorative for is marlin.

in mackerel's data for we have the following

@		IN	SOA ...
		IN	A

marlin		IN	A

ucc		IN	NS
Marlin is also given an IP in our domain as a convenience. If they blow up their name serving there is less that can go wrong because people can still see that machine which is a start. You could place "marlin.ucc" in the first column and leave the machine totally inside the ucc domain as well.

The second NS line is because mackerel will be acting as secondary name server for the domain. Do not include this line if you are not authorative for the information included in the sub-domain.

4 Troubleshooting your named:

4.1 Named doesn't work! What is wrong?

Step 1: Run nslookup and see what nameserver it tries to connect you to. If nslookup connects you to the wrong nameserver, create a /etc/resolv.conf file that points your machine at the correct nameserver. If there is no resolv.conf file, the the resolver uses the nameserver on the local machine.

Step 2: Make sure that named is actually running.

Step 3: Restart named and see if you get any error messages on the console and in also check /usr/adm/messages.

Step 4: If named is running, nslookup connects to the appropriate nameserver and nslookup can answer simple questions, but other programs such as 'ping' do not work with names, then you need to install resolv+ most likely.

4.2 Local has noticed change, but nobody else has new info

I changed my named database and my local machine has noticed, but nobody else has the new information?

Change the serial number in the SOA for any domains that you modified and restart named. Wait an hour and check again. The information propogates out. It won't change immediately.

4.3 I can see their info, but they can't see mine

My local machine knows about all the name server information, but no other sites know about me?

Find an upstream nameserver (one that has an SOA for something in your domain) and ask them to be a secondary name server for you. eg if you are, ask someone who has an SOA for the domain Get NS records (and glue) added to your parent zone for your zone. This is called delegating. It should be done formally like this or you will get inconsistant answers out of the DNS. ALL NAMSERVERS FOR YOUR ZONE SHOULD BE LISTED IN THIS MANNER.

4.4 Forward domain works, but not backwards

My forward domain names work, but the backward names do not?

Make sure the numbers are back to front and have the on the end.

Make sure your reverse zone is registered. For Class C nets this can be done by mailing to For class A & B nets make sure that you are registeres with the primary for your net and that the net itself is registered with

5 How to get useful information from nslookup:

Nslookup is a very useful program but I'm sure there are less than 20 people worldwide who know how to use it to its full usefulness. I'm most certainly not one of them. If you don't like using nslookup, there is at least one other program called dig, that has most/all(?) of the functionality of nslookup and is a hell of a lot easier to use.

I won't go into dig much here except to say that it is a lot easier to get this information out of. I won't bother because nslookup ships with almost all machines that come with network software.

To run nslookup, you usually just type nslookup. It will tell you the server it connects to. You can specify a different server if you want. This is useful when you want to tell if your named information is consistent with other servers.

5.1 Getting name to number mappings

Type the name of the machine. Typing 'decel' is enough if the machine is local.

(Once you have run nslookup successfully)

> decel


One curious quirk of some name resolvers is that if you type a machine name, they will try a number of permutations. For example if my machine is in the domain and I try to find a machine called fred, the resolver will try the following.
This can be useful, but more often than not, you would simply prefer a good way to make aliases for machines that are commonly referenced. If you are running resolv+, you should just be able to put common machines into the host file.

DIG: dig <machine name>

5.2 Getting number to name mappings

Nslookup defaults to finding you the Address of the name specified. For reverse lookups you already have the address and you want to find the name that goes with it. If you read and understood the bit above where it describes how to create the number to name mapping file, you would guess that you need to find the PTR record instead of the A record. So you do the following.

> set type=ptr
Address: host name =
nslookup tells you that the ptr for the machine name points to the host

DIG: dig -x <machine number>

5.3 Finding where mail goes when a machine has no IP number

When a machine is not IP connected, it needs to specify to the world, where to send the mail so that it can dial up and collect it every now and then. This is accomplished by setting up an MX record for the site and not giving it an IP number. To get the information out of nslookup as to where the mail goes, do the following.

> set type=mx

Non-authoritative answer:    preference = 100, mail exchanger = uniwa.uwa.OZ.AU    preference = 200, mail exchanger = munnari.OZ.AU
Authoritative answers can be found from:
uniwa.uwa.OZ.AU inet address =
munnari.OZ.AU   inet address =
munnari.OZ.AU   inet address =       inet address =       inet address =
dmssyd.syd.dms.CSIRO.AU inet address =
ns.UU.NET       inet address =
You tell nslookup that you want to search for mx records and then you give it the name of the machine. It tells you the preference for the mail (small means more preferable), and who the mail should be sent to. It also includes sites that are authorative (have this name in their named database files) for this MX record. There are multiple sites as a backup. As can be seen, our local public internet access company dialix would like all of their mail to be sent to uniwa, where they collect it from. If uniwa is not up, send it to munnari and munnari will get it to uniwa eventually.

NOTE: For historical reasons Australia used to be .oz which was changed to to move to the ISO standard extensions upon the advent of IP. We are now moving to a more normal heirarchy which is where the comes from. Pity, I liked having oz.

DIG: dig <zone> mx

5.4 Getting a list of machines in a domain from nslookup

Find a server that is authorative for the domain or just generally all knowing. To find a good server, find all the SOA records for a given domain. To do this, you set type=soa and enter the domain just like in the two previous examples.

Once you have a server type

> ls
Host or domain name            Internet address
 gu                             server =
 gu                             server =
To get a list of all the machines in the domain.

If you wanted to find a list of all of the MX records for the domain, you can put a -m flag in the ls command.

> ls -m
Host or domain name            Metric Host
 gu                             100
 gu                             200
This only works for a limited selection of the different types.

DIG: dig axfr <zone> @<server>

6 Appendicies

6.2 Appendix B

An Excerpt from
RFC 1340		    Assigned Numbers		       July 1992


   These are the Official Machine Names	as they	appear in the Domain Name
   System HINFO	records	and the	NIC Host Table.	 Their use is described	in
   RFC-952 [53].

   A machine name or CPU type may be up	to 40 characters taken from the
   set of uppercase letters, digits, and the two punctuation characters
   hyphen and slash.  It must start with a letter, and end with	a letter
   or digit.

      ALTO				    DEC-1080
      ALTOS-6800			    DEC-1090
      AMDAHL-V7				    DEC-1090B
      APOLLO				    DEC-1090T
      ATARI-104ST			    DEC-2020T
      ATT-3B1				    DEC-2040
      ATT-3B2				    DEC-2040T
      ATT-3B20				    DEC-2050T
      ATT-7300				    DEC-2060
      BBN-C/60				    DEC-2060T
      BURROUGHS-B/29			    DEC-2065
      BURROUGHS-B/4800			    DEC-FALCON
      BUTTERFLY				    DEC-KS10
      C/30				    DEC-VAX-11730
      C/70				    DORADO
      CADLINC				    DPS8/70M
      CADR				    ELXSI-6400
      CDC-170				    EVEREX-386
      CDC-170/750			    FOONLY-F2
      CDC-173				    FOONLY-F3
      CELERITY-1200			    FOONLY-F4
      CLUB-386				    GOULD
      COMPAQ-386/20			    GOULD-6050
      COMTEN-3690			    GOULD-6080
      CP8040				    GOULD-9050
      CRAY-1				    GOULD-9080
      CRAY-X/MP				    H-316
      CRAY-2				    H-60/68
      CTIWS-117				    H-68
      DANDELION				    H-68/80
      DEC-10				    H-89
      DEC-1050				    HONEYWELL-DPS-6
      DEC-1077				    HONEYWELL-DPS-8/70
      HP3000				    ONYX-Z8000
      HP3000/64				    PDP-11
      IBM-158				    PDP-11/3
      IBM-360/67			    PDP-11/23
      IBM-370/3033			    PDP-11/24
      IBM-3081				    PDP-11/34
      IBM-3084QX			    PDP-11/40
      IBM-3101				    PDP-11/44
      IBM-4331				    PDP-11/45
      IBM-4341				    PDP-11/50
      IBM-4361				    PDP-11/70
      IBM-4381				    PDP-11/73
      IBM-4956				    PE-7/32
      IBM-6152				    PE-3205
      IBM-PC				    PERQ
      IBM-PC/AT				    PLEXUS-P/60
      IBM-PC/RT				    PLI
      IBM-PC/XT				    PLURIBUS
      IBM-SERIES/1			    PRIME-2350
      IMAGEN				    PRIME-2450
      IMAGEN-8/300			    PRIME-2755
      IMSAI				    PRIME-9655
      INTEL-386				    PRIME-9955
      INTEL-IPSC			    PRIME-9950
      IS-1				    PRIME-9650
      IS-68010				    PRIME-9750
      LMI				    PRIME-2250
      LSI-11				    PRIME-750
      LSI-11/2				    PRIME-850
      LSI-11/23				    PRIME-550II
      LSI-11/73				    PYRAMID-90
      M68000				    PYRAMID-90MX
      MAC-II				    PYRAMID-90X
      MASSCOMP				    RIDGE
      MC500				    RIDGE-32
      MC68000				    RIDGE-32C
      MICROPORT				    ROLM-1666
      MICROVAX				    S1-MKIIA
      MICROVAX-I			    SMI
      MV/8000				    SEQUENT-BALANCE-8000
      NAS3-5				    SIEMENS
      NEXT/N1000-316			    SILICON-GRAPHICS-IRIS
      NOW				    SGI-IRIS-2400
      SGI-IRIS-2500			    SUN-3/50
      SGI-IRIS-3010			    SUN-3/60
      SGI-IRIS-3020			    SUN-3/75
      SGI-IRIS-3030			    SUN-3/80
      SGI-IRIS-3110			    SUN-3/110
      SGI-IRIS-3115			    SUN-3/140
      SGI-IRIS-3120			    SUN-3/150
      SGI-IRIS-3130			    SUN-3/160
      SGI-IRIS-4D/20			    SUN-3/180
      SGI-IRIS-4D/20G			    SUN-3/200
      SGI-IRIS-4D/25			    SUN-3/260
      SGI-IRIS-4D/25G			    SUN-3/280
      SGI-IRIS-4D/25S			    SUN-3/470
      SGI-IRIS-4D/50			    SUN-3/480
      SGI-IRIS-4D/50G			    SUN-4/60
      SGI-IRIS-4D/50GT			    SUN-4/110
      SGI-IRIS-4D/60			    SUN-4/150
      SGI-IRIS-4D/60G			    SUN-4/200
      SGI-IRIS-4D/60T			    SUN-4/260
      SGI-IRIS-4D/60GT			    SUN-4/280
      SGI-IRIS-4D/70			    SUN-4/330
      SGI-IRIS-4D/70G			    SUN-4/370
      SGI-IRIS-4D/70GT			    SUN-4/390
      SGI-IRIS-4D/80GT			    SUN-50
      SGI-IRIS-4D/80S			    SUN-100
      SGI-IRIS-4D/120GTX		    SUN-120
      SGI-IRIS-4D/120S			    SUN-130
      SGI-IRIS-4D/210GTX		    SUN-150
      SGI-IRIS-4D/210S			    SUN-170
      SGI-IRIS-4D/220GTX		    SUN-386i/250
      SGI-IRIS-4D/220S			    SUN-68000
      SGI-IRIS-4D/240GTX		    SYMBOLICS-3600
      SGI-IRIS-4D/240S			    SYMBOLICS-3670
      SGI-IRIS-4D/280GTX		    SYMMETRIC-375
      SGI-IRIS-4D/280S			    SYMULT
      SGI-IRIS-CS/12			    TANDEM-TXP
      SGI-IRIS-4SERVER-8		    TANDY-6000
      SPERRY-DCP/10			    TEK-6130
      SUN				    TI-EXPLORER
      SUN-2				    TP-4000
      SUN-2/50				    TRS-80
      SUN-2/100				    UNIVAC-1100
      SUN-2/120				    UNIVAC-1100/60
      SUN-2/130				    UNIVAC-1100/62
      SUN-2/140				    UNIVAC-1100/63
      SUN-2/150				    UNIVAC-1100/64
      SUN-2/160				    UNIVAC-1100/70
      SUN-2/170				    UNIVAC-1160

			       SYSTEM NAMES

   These are the Official System Names as they appear in the Domain Name
   System HINFO	records	and the	NIC Host Table.	 Their use is described
   in RFC-952 [53].

   A system name may be	up to 40 characters taken from the set of upper-
   case	letters, digits, and the three punctuation characters hyphen,
   period, and slash.  It must start with a letter, and	end with a
   letter or digit.

   AEGIS		     LISP		       SUN OS 3.5
   APOLLO		     LISPM		       SUN OS 4.0
   AIX/370		     LOCUS		       SWIFT
   AIX-PS/2		     MACOS		       TAC
   BS-2000		     MINOS		       TANDEM
   CEDAR		     MOS		       TENEX
   CGW			     MPE5		       TOPS10
   CHORUS		     MSDOS		       TOPS20
   CHRYSALIS		     MULTICS		       TOS
   CMOS			     MUSIC		       TP3010
   CMS			     MUSIC/SP		       TRSDOS
   COS			     MVS		       ULTRIX
   CPIX			     MVS/SP		       UNIX
   CTOS			     NEXUS		       UNIX-BSD
   CTSS			     NMS		       UNIX-V1AT
   DCN			     NONSTOP		       UNIX-V
   DDNOS		     NOS-2		       UNIX-V.1
   DOMAIN		     NTOS		       UNIX-V.2
   DOS			     OS/DDP		       UNIX-V.3
   EDX			     OS/2		       UNIX-PC
   ELF			     OS4		       UNKNOWN
   EMBOS		     OS86		       UT2D
   EMMOS		     OSX		       V
   EPOS			     PCDOS		       VM
   FOONEX		     PERQ/OS		       VM/370
   FUZZ			     PLI		       VM/CMS
   GCOS			     PSDOS/MIT		       VM/SP
   GPOS			     PRIMOS		       VMS
   HDOS			     RMX/RDOS		       VMS/EUNICE
   IMAGEN		     ROS		       VRTX
   INTERCOM		     RSX11M		       WAITS
   IMPRESS		     RTE-A		       WANG
   INTERLISP		     SATOPS		       WIN32
   IOS			     SCO-XENIX/386	       X11R3
   IRIX			     SCS		       XDE
   ISI-68020		     SIMP		       XENIX
   ITS			     SUN

6.3 Appendix C

Appendix C     Installing DNS on a Sun when running NIS

 2)     How to get DNS to be used when running NIS ?

        First setup the appropriate /etc/resolv.conf file.
        Something like this should do the "trick".

        ; Data file for a client.
        domain          local domain
        nameserver      address of primary domain nameserver
        nameserver      address of secondary domain nameserver

        where:  "local domain" is the domain part of the hostnames.
                 For example, if your hostname is ""
                 your "local domain" is "".

        You will need to put a copy of this resolv.conf on
        all NIS(YP) servers including slaves.

        Under SunOS 4.1 and greater, change the "B=" at the top
        of the /var/yp/Makefile to "B=-b" and setup NIS in the
        usual fashion.

        You will need reboot or restart ypserv for these changes
        to take affect.

        Under 4.0.x, edit the Makefile or apply the following "diff":

*** Makefile.orig       Wed Jan 10 13:22:11 1990
--- Makefile    Wed Jan 10 13:22:01 1990
*** 63 ****
!                   | $(MAKEDBM) - $(YPDBDIR)/$(DOM)/hosts.byname; \
--- 63 ----
!                   | $(MAKEDBM) -b - $(YPDBDIR)/$(DOM)/hosts.byname; \
*** 66 ****
!                   | $(MAKEDBM) - $(YPDBDIR)/$(DOM)/hosts.byaddr; \
--- 66 ----
!                   | $(MAKEDBM) -b - $(YPDBDIR)/$(DOM)/hosts.byaddr; \

Craig Richmond.  Computer Officer -  Dept of Economics (morning) 380 3860
  University of Western Australia    Dept of Education (afternoon)   2368 Dvorak Keyboards RULE!  "Messes are only acceptable
if users make them.  Applications aren't allowed this freedom" I.M.VI 2-4