Re: Duplicate name exists on network

[redhat buglecreek com]

On Thu, 17 Jan 2008 21:24:50 +0530, "Alok Pandey" <alok rhct 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.