[ale] DNS lookups slooowwww.....

[Cleveland Flowe]

John Wells wrote:
> 
> I'm setting up a machine with two interfaces...one to
> a T1 line and the other to a private network.
> 
> My /etc/resolv.conf looks like:
> 
> search foobar.com
> nameserver 198.153.233.2 # private network DNS server
> nameserver 38.3.3.3 # external DNS
> nameserver 38.3.3.2 # external DNS
> 
> This configuration allows both machines on the
> internal and external networks to be looked up.
> However, when I do a look up on an external site (like
> www.linuxdoc.org), it takes about 15-20 seconds to
> resolve.  Internal addresses resolve immediately.
> 
> If I move the external entries to the top of the list,
> the external address lookups have no delay, but the
> internal lookups fail.  Is there a way to configure
> this so that both lookups perform efficiently?

John, remove references of the external DNS in resolv.conf, and setup
your private DNS server to forward queries to the external DNS. In
/etc/named.conf, for bind versions 8 or 9, include a forwards
sub-statement in the options statement like so:

options {
  forwarders {38.3.3.3; 38.3.3.2;};
};

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