Gothcas of changing the IP Address of an Authoritative DNS Server

Joe Abley jabley at isc.org
Wed Dec 14 17:22:40 UTC 2005



On 14-Dec-2005, at 11:52, bmanning at vacation.karoshi.com wrote:

> 	currently in the middle of such a safe, conservative
> 	transition leads me to believe that there will -NEVER-
> 	be a point w/ there are no queries to the old address.
> 	(he says, 24 months into a transition...)

It's probably reasonable to say that there are more historical  
instances of B's address being hard-coded than there are for Eric's  
authority server, though (and I'm guessing that he also doesn't have  
to answer priming queries :-)

> 	The right
> 	tactic is to make the change, based on 2x the TTL of the SOA.


Joe



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