[150594] in North American Network Operators' Group
Re: dns and software, was Re: Reliable Cloud host ?
daemon@ATHENA.MIT.EDU (Mark Andrews)
Tue Feb 28 00:46:47 2012
To: Matt Addison <matt.addison@lists.evilgeni.us>
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Mon, 27 Feb 2012 23:57:30 CDT."
<6252359949770844391@unknownmsgid>
Date: Tue, 28 Feb 2012 16:45:26 +1100
Cc: Nanog <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
getaddrinfo was designed to be extensible as was struct
addrinfo. Part of the problem with TTL is not data sources
used by getaddrinfo have TTL information. Additionally for
many uses you want to reconnect to the same server rather
than the same name. Note there is nothing to prevent a
getaddrinfo implementation maintaining its own cache though
if I was implementing such a cache I would have a flag to
to force a refresh.
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
