Net::DNS::Update when Something Goes Wrong

Kevin Darcy kcd at
Thu Sep 18 17:03:58 UTC 2014

On 9/18/2014 12:33 PM, Martin G. McCormick wrote:
> 	This is a perl module but my question is pure bind. Is
> anyone familiar enough with this perl module to say whether the
> packets are sent as TCP or udp? If udp, one would think that if
> a packet was sent to do a job and the DNS failed to receive it
> the world would look the same to the sender as it would if the
> DNS got the packet and the job went through without a problem.
> 	I have been using this module in some scripts and it
> normally works perfectly but on occasion, we have had things
> happen such as trying to replace old forward lookups with new
> ones using the same IP address but a different A record name.
> The old ones hung around along with the new ones to form
> redundant A records and nobody was the wiser at the time.
> 	If there is that ambiguity, the fix would be to do
> lookups just after the job to verify that everything went as
> expected.
and/or use prereqs.

                                                                 - Kevin

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