On 04/21/2015 09:26 AM, Björn Persson wrote:
Philip Prindeville wrote:
> The behavior I’ve seen implies that [Thunderbird] caches the address
> from the original resolution and keeps trying to reconnect to that.
Well, if it would cache the address for longer than its time to live,
then it would be doing it wrong.
There is a widespread belief that web browsers have to do that to
counter certain vulnerabilities (the exploit technique is sometimes
called “DNS rebinding”).
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Florian Weimer / Red Hat Product Security