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June 2001, Week 4

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Subject:
Re: NSSWITCH.NET.SYS {sample file}
From:
Mark Bixby <[log in to unmask]>
Reply To:
Mark Bixby <[log in to unmask]>
Date:
Tue, 26 Jun 2001 09:01:49 -0700
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text/plain (23 lines) 
"Simonsen, Larry" wrote:
>
> For those of us who are new to this networking terms is there a short
> explanation of what more this does besides DNS via the /etc/resolv.conf
> file.  why would I need this?

It allows you to change the order of name resolution, i.e. try /etc/hosts then
DNS, or try DNS then /etc/hosts.  You can also define what action should happen
if a naming resource is unavailable or returns a "not found" condition.

Basically you gain additional flexibility and reliability.

FWIW, if your applications are linked with the open source BIND resolver
library (http://www.bixby.org/mark/bindix.html), then you already have a
similar NSSWITCH ability today implemented via a BIND file called
/etc/irs.conf.
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