named.conf restored to hint zone for the root by default

[Oliver Fromme]

Hi,

Just for the record, I like the current solution, i.e.
default being a "hint" zone, and slave zones being
commented out, ready to be used for those who know
what they're doing.

However, I noticed that the "refresh" interval of the
root zone is 1800, i.e. it would be fetched every 30
minutes, even though the zone seems to be updated at
most once per day.  Therefore, wouldn't it make sense
to add the following option to the slave zones?

        min-refresh-time 86400;

Best regards
   Oliver

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Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
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