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Subject: Re: FreeBSD-11.1 Jails and SSL
To: byrnejb@harte-lyne.ca,
 Philipp Vlassakakis <freebsd-en@lists.vlassakakis.de>
Cc: freebsd-questions@freebsd.org
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From: Per olof Ljungmark <peo@nethead.se>
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Date: Fri, 20 Jul 2018 09:28:23 +0200
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On 07/19/18 22:52, James B. Byrne via freebsd-questions wrote:
> 
> On Thu, July 19, 2018 16:38, Philipp Vlassakakis wrote:
>>
>>> Am 19.07.2018 um 22:29 schrieb James B. Byrne
>>> <byrnejb@harte-lyne.ca>:
>>>
>>> UseDNS=YES in /etc/ssh/sshd_config
>>
>> Does the problem persists, if you disable this option?
>>
> 
> No, it does not persist.  Log ons are now as fast as with any other
> host.  Why is UseDNS=YES (the default setting) a problem inside a jail
> and nowhere else?
> 

It is a "problem" in all setups where UseDNS=YES is defined and DNS for
the host is not configured, not only in jails.

It could be for example your jailed hosts /etc/resolv.conf or your DNS zone.

BR,

//per