DDNS
Banana Flex
flex.banana at bluewin.ch
Fri Oct 30 17:33:06 UTC 2009
thank you Simon
On Oct 29, 2009, at 12:24 AM, Simon Hobson wrote:
> Banana Flex wrote:
>
>> but how can it work when the master goes down ? no DDNS works at
>> this time ?
>
> Correct, DDNS stops working.
>
>> 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.
>
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
> Christmas stocking fillers. Some available as e-books.
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