Duplicate name exists on network

[Rick Stevens]

On Mon, 2008-01-21 at 14:07 +0530, Alok Pandey wrote:
> My new FQDN is as :
> rev-zone file:
> 118      IN      PTR     snarayan_D1_Ub-32_118.in.xx.com.
> 119      IN      PTR     dell119.in.xx.com.
> 120      IN      PTR     ibasha_D1_XpSp2-64_120.in.xx.com.
> 121      IN      PTR     dsingh_D1_XpSp2-64_121.in.xx.com.
> 122      IN      PTR     ahiremath_D1_XpSp2-64_122.in.xx.com.
> 123      IN      PTR     nlocal_T1_Fe7-64_123.in.xx.com.
> 124      IN      PTR     nlocal_T1_Lan-I_124.in.xx.com.
> 125      IN      PTR     aroy125.in.xx.com.
> In-zone file:
> sarora_D1_XpSp2-64_115          IN A    192.168.0.115
> silver_T1_Cnt-64_116            IN A    192.168.0.116
> net-install     IN A            192.168.0.117
> snarayan_D1_Ub-32_118           IN A    192.168.0.118
> dell119         IN A            192.168.0.119
> ibasha_D1_XpSp2-64_120          IN A    192.168.0.120
> dsingh_D1_XpSp2-64_121          IN A    192.168.0.121
> ahiremath_D1_XpSp2-64_122       IN A    192.168.0.122
> nlocal_T1_Fe7-64_123            IN A    192.168.0.123
> nlocal_T1_lan-I_124             IN A    192.168.0.124
> aroy125         IN A    192.168.0.125
> vksingh_D1_Fe7-64_126           IN A    192.168.0.126
> 
> In detail in represented  as :
> snarayan_D1_Ub-32_118.in.xx.com. = username_DestoptNum_OS-arch_ip

Do NOT use underscores in the host- or domain-names.  That is in direct
violation of RFC standards.

> 
> Any suggestion is welcome ...
> 
> Thanks
> Alok 
> Sujitkumar Shirkar wrote: 
> > Hello Alok,
> >  
> > what is your exact new FQDN? is it
> > "RAM_D1_Rhel5-64_192.168.1.41.xx.com" if yes then you need to remove
> > IP address from it. as in DNS every "." is considered as one child
> > domain. Also in your windwos DNS server check all host entries. is
> > you have same IP with two different host names.  thesn rectify it
> >  
> > Sujit
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > o: alok.rhct at gmail.com; redhat-install-list at redhat.com
> > > Date: Fri, 18 Jan 2008 11:39:23 -0700
> > > CC: 
> > > Subject: Re: Duplicate name exists on network
> > > 
> > > 
> > > On Thu, 17 Jan 2008 21:24:50 +0530, "Alok Pandey"
> > <alok.rhct at gmail.com>
> > > said:
> > > > Hi
> > > > I have a network mix OS of approx 30 machine. ( ie, OS as Xp,
> > vista, 
> > > > Linux all flavour).
> > > > I have a DNS and DHCP Services running on Linux box. Recently I
> > added a 
> > > > Win server 2000 box in the network and also renamed the FQDN of
> > some 
> > > > old box connected with the same network.
> > > > Now when ever I try to access machine with Host name, it shows
> > an error 
> > > > message as *duplicate name exists on your network.* Whereas I
> > can 
> > > > successful access the same machine by IP, also the machine who's
> > host 
> > > > name are not renamed , are accessible by name. My new FQDN
> > contains 2 
> > > > special character "_ " and "-".( eg hostname is as : 
> > > > Name_D1_Rhel5-64_IP.xx.com) whereas previous it was simple on
> > the name 
> > > > of mountain( eg everest.xx.com).
> > > > 
> > > > Now I am unable to figure out the cause of problem. Is it
> > because of new 
> > > > win server machine or dns or use of the special char or
> > something else, 
> > > > plz help.
> > > > 
> > > > Note : I have central anti virus system (kaspersky), which is
> > installed 
> > > > on Win Server 2000. But the client deployment fail because of
> > this 
> > > > duplicate name network problem.
> > > > 
> > > > Thanks
> > > > Alok
> > > 
> > > Don't know if this is the only issue, but in newer versions of
> > bind
> > > underscores are generally not allowed in a hostname (RFC 952). If
> > you
> > > absolutely need to have a non conforming name you may be able to
> > use the
> > > "check-names" directive in your config file. You'll need to pass
> > it a
> > > few arguments (master ignore etc). I would recommend using a
> > conforming
> > > hostname.
> > > 
> > > _______________________________________________
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> > 
> > 
> > 
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- Rick Stevens, Principal Engineer             rstevens at internap.com -
- CDN Systems, Internap, Inc.                http://www.internap.com -
-                                                                    -
- Millihelen, adj: The amount of beauty required to launch one ship. -
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