Peter E. Abresch Jr. - at Pepco wrote:
Is there any method of allowing Linux to perform reverse DNS lookups using
the /etc/hosts file or some other file? I currently have the interface
addresses in /etc/hosts but now have a requirement to perform a reverse
name lookup. I use an external DNS as well but that is under another
department?s control. I need more specific control in case an interface
goes down. Thanks.


Do you mean a real reverse DNS lookup? If yes, then it's really tricky as you need to "simulate" a root server that can do that as reverse DNS lookups always use the in-addr.arpa domain:

Looking up e.g.

192.168.200.3

results in a real DNS query to

3.200.168.192.in-addr.arpa

So your DNS server needs to provide that information directly. There
might be ways around this problem, but i am not aware of any easy
solutions, sorry.

Read ya, Phil

--
Philipp Knirsch      | Tel.:  +49-711-96437-470
Development          | Fax.:  +49-711-96437-111
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D-70178 Stuttgart
Motd:  You're only jealous cos the little penguins are talking to me.

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