How does /etc/resolv.conf work??

[Mark_Andrews at isc.org]

> 
> Hi,
> 
> When a name can not be resolved by my first DNS (because it is not in the RR)
> , 
> will it also try to resolve in my second, third DNS?? Since all the three has
>  
> the same configuration and they are defined in the /etc/resolv.conf.
> If it is, that will be stupid, it will cost unnecessary CPU load.
> Can somebody tell me who the resolv.conf works??
> 
> Please let me know,
> 
> Regards,
> 
> John

	No.  The resolver assumes that all nameservers have the *same*
	view of the world.

	Mark

	P.S.  Lack of a record doesn't stop the name resolving.  A resolver
	will return a negative answer (NXDOMAIN/NODATA).  REFUSED / SERVFAIL
	/ NOTIMP and timeout cause the resolver to move to the next server.
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org