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dns and software, was Re: Reliable Cloud host ?
From: david raistrick <drais () icantclick org>
Date: Mon, 27 Feb 2012 15:42:07 -0500 (EST)

On Mon, 27 Feb 2012, William Herrin wrote:

In some cases this is because of carelessness: The application does a
gethostbyname once when it starts, grabs the first IP address in the
list and retains it indefinitely. The gethostbyname function doesn't
even pass the TTL to the application. Ntpd is/used to be one of the
notable offenders, continuing to poll the dead address for years after
the server moved.

While yes it often is carelessness - it's been reported by hardcore development sorts that I trust that there is no standardized API to obtain the TTL... What needs to get fixed is get[hostbyname,addrinfo,etc] so programmers have better tools.

david raistrick        http://www.netmeister.org/news/learn2quote.html
drais () icantclick org             http://www.expita.com/nomime.html

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