DDNS
Simon Hobson
dhcp1 at thehobsons.co.uk
Thu Oct 29 15:42:58 UTC 2009
Glen R. J. Neff wrote:
>>>can the DHCP update the slave zone ? (stupid question sorry)
>>
>>No. And in general, you can't anyway (that's not a DHCP limitation,
>>it's a limitation of at least one of the major DNS implementations,
>>and I assume others). It is a definite possibility to create a
>>database system that allows updates to a slave when the master is
>>down - but you've only to look at the way failover works in DHCP to
>>see how quickly the complications build up when you take all the
>>corner cases into consideration. Not least of these complications
>>is how to merge two sets of updates - considering it's possible to
>>have mutually incompatible updates to apply.
>
>ISC-bind can quite easily be configured to allow DDNS updates to
>"slave" servers for a zone. You use the allow-update-forwarding{};
>option in the zone declaration on the slave and specify the slave
>server IPs in with the allow-update{}; statement in the zone
>declaration on the master.
While the master is down ?
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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