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Re: slow su?

"Ian D. Leroux" <> writes:

> On Wed, 10 Aug 2011 07:43 +0000, "Christos Zoulas" 
> <>
> wrote:
>> On Wed, Aug 10, 2011 at 08:25:54AM +0200, Ian D. Leroux wrote:
>> > Since updating my amd64 system to the latest -current two weeks ago
>> > su(1) has been taking ~30s to display the "password" prompt.
>> > Otherwise it works normally. [...]
>> [...] Or check DNS...
> As it turns out, the problem was elsewhere, but I'd be curious to learn
> under what circumstances su(1) consults the DNS system (and how to make
> sure it doesn't).  Which manual should I FR?

su might use kerberos, which would then use dns to maybe look up a KDC.
Or some other pam plugin might.  su(1) explains about kerberos use, but
doesn't dig into all the details.

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