CentOS - May 2008 - DNS

hi 

I have defined 
search localhost in /etc/resolv.conf 

cat /etc/resolv.conf
search localhost

i did not define any nameserver ip address in this file

i have given the gw ip from where the internet can be reached

no dns is running in gateway. 
no dns service is running on the PC
no bind packages are installed on pc

but still if i ping to some domain like 
ping www.google.com it resolves and displayes icmp replies.


i dont know from where this name resolution is taking place 

please help on this what happens exactly.

Regards,
Gopinath M
Signal Networks Pvt. Ltd.


Smile... it increases your face value!
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On May 9, 2008, at 7:49 AM, gopinath wrote:
> I have defined
> search localhost in /etc/resolv.conf
>
> cat /etc/resolv.conf
> search localhost
>
> i did not define any nameserver ip address in this file
>
> i have given the gw ip from where the internet can be reached
>
> no dns is running in gateway.
> no dns service is running on the PC
> no bind packages are installed on pc
>
> but still if i ping to some domain like
> ping www.google.com it resolves and displayes icmp replies.
>
>
> i dont know from where this name resolution is taking place
There is the possibility that /etc/nsswitch.conf might give you a  
clue...
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gopinath wrote:
> hi
>  
> I have defined
> search localhost in /etc/resolv.conf
>  
> cat /etc/resolv.conf
> search localhost
>  
> i did not define any nameserver ip address in this file
>  
> i have given the gw ip from where the internet can be reached
>  
> no dns is running in gateway.
> no dns service is running on the PC
> no bind packages are installed on pc
>  
> but still if i ping to some domain like
> ping www.google.com <http://www.google.com> it resolves and displayes
> icmp replies.
>  
>  
> i dont know from where this name resolution is taking place
>  
> please help on this what happens exactly.
>  
> Regards,
> Gopinath M
> Signal Networks Pvt. Ltd.
>  
> 
> Smile... it increases your face value!
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
Try dig.  >>dig www.google.com<<

Under the SERVER section, that should give you the information on where 
the DNS data came from.  For instance, my SERVER name is the local ip 
address of my DNS server.

HTH

Monty