[plug] DNS zone transfers

[Bernd Felsche]

Peter F Bradshaw <pfb at exadios.com> writes:

>What's the magic required to get an slave DNS server update zone files
>from its master on a periodic basis?

>If I delete the zone files on the slave it will update from the master.
>But it will not do so otherwise. What I want is for the slave to poll
>the master about once a day or so.

The slave should update itself and query the master if the TTL (time
to live) for an entry in its zone files has expired. 

You can be set the TTL fairly low, as low as 600 seconds, for
"internal" networks without too much of an overhead.

TTL is typically of the order of days by default which can be a PITA
for private networks.
-- 
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