How to allow set Host file dns query priorities in BIND

babu dheen babudheen at
Wed Feb 23 09:08:19 UTC 2011

 Our setup is; We have internal DNS server wherein BIND is configured in RHEL 5 and many internal zones are configured. if Internet connection is down, our Internal DNS severs are not able to get the DNS query from ISP DNS server. Because of this, all users are not able to access many critical application hosted in internet.
 Now we would like to add those critical applicaton DNS entries in our internal DNS server HOST file. So that if internet link is down, users will be able to get the IP address of the URL through host file.
is there any option in BIND to give priority to HOST file before connecting it to internet ISP or local zone?

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