Preventing external lookups

[Barry Margolin]

In article <bp7vl6$2628$1 at sf1.isc.org>, Mark <admin at asarian-host.net> wrote:
>But the question arising from this, is a generic one. Having multiple name
>servers defined in /etc/resolv.conf may provide alternate sources, but seems
>to also multiply the time it takes to timeout when no match is found. So,
>the question is then, is it even wise to have multiple name servers defined
>in /etc/resolv.conf?

It depends on the problem that you're trying to solve.  If you want
failover if the first server fails, you need to list multiple nameservers.
However, as you note, this will cause timeouts to multiply when the problem
is with the remote nameserver.  The latter should be relatively rare, since
it only happens when all the nameservers for an external domain are down or
lame.

-- 
Barry Margolin, barry.margolin at level3.com
Level(3), Woburn, MA
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