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Date:      Mon, 16 Jan 2017 10:46:39 -0500
From:      Jon Radel <jon@radel.com>
To:        byrnejb@harte-lyne.ca, freebsd-questions@freebsd.org
Subject:   Re: Bhyve / jails network response
Message-ID:  <8b1f57ac-61b7-6028-a651-42d351fead71@radel.com>
In-Reply-To: <ee187fd6645b7bea3ac3db35bf5014b0.squirrel@webmail.harte-lyne.ca>
References:  <ee187fd6645b7bea3ac3db35bf5014b0.squirrel@webmail.harte-lyne.ca>
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[-- Attachment #1 --]
On 1/16/17 10:28 AM, James B. Byrne via freebsd-questions wrote:
> However, when I ssh into the jail
> then it seems to take a significant period of time before I get a
> prompt. I would like to determine the source of this delay.
> 
> It is an artefact of running a jail on a VM?
> 
> It is an artefact of sshd running in a jail?
> 
> It there a DNS issue somewhere?

ssh -v <host>
or even
ssh -vv <host>

would give you considerable information on which phase of the process is
hanging.

You could also crank up the logging for the server side in [probably]
/etc/ssh/sshd_config to see what it thinks is happening.  You did check
the logs, right?

And, yes, it could be the server trying to do a DNS lookup.  Does DNS
resolution work on the jail?  If it is broken and you don't want to fix
it, start fiddling server side settings such as UseDNS.

-- 
--Jon Radel
jon@radel.com


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