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From: "Kristof Provost" <kristof@sigsegv.be>
To: "Oleg Ginzburg" <olevole@olevole.ru>
Cc: "FreeBSD Current" <freebsd-current@freebsd.org>,
 "Goran =?utf-8?q?Meki=C4=87?=" <meka@tilda.center>, freebsd-jail@freebsd.org
Subject: Re: VNET jail and dhclient
Date: Tue, 10 Oct 2017 23:25:14 +0200
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On 10 Oct 2017, at 23:10, Oleg Ginzburg wrote:
> What is your FreeBSD version? This problem reproduced on FreeBSD 12 
> only.
> /var/empty is exist and trivial test:
>
I’m running r324317 on CURRENT, yes.

What arguments are you calling dhclient with?
Clearly there’s a difference between what you’re doing and what 
I’m doing.

> I'm not sure if this fd leak (due to pidfile_remove at the end of
> dhclient),  nevertheless closing pid fd in my jail/FreeBSD12 before 
> chroot
> solve dhclient issue.

I would not expect an open file descriptor to be a problem, unless 
perhaps you’ve got an open directory and 
kern.chroot_allow_open_directories is unset.

Regards,
Kristof