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From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Lev Serebryakov <lev@FreeBSD.org>
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Cc: Ian Lepore <freebsd@damnhippie.dyndns.org>, freebsd-current@freebsd.org
Subject: Re: r239356: does it mean, that synchronous dhcp and dhcplcinet with
 disabled devd gone?
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On Tue, Aug 21, 2012 at 09:40:27PM +0400, Lev Serebryakov wrote:

> Hello, Ian.
> You wrote 21 августа 2012 г., 21:36:30:
> 
> IL> Perhaps the right solution is to add a dhclient command line option to
> IL> operate in the historical buggy mode: it doesn't exit on link status
> IL> changes, and fails to work properly if those link status changes are
> IL> happening because the physical connection has moved to another network.
>   Right  solution was spoken by jhb@ already: dhclient should
>  re-request lease on interface down/up cycle. There is no need to exit
>  and be started again in any case. It will work ``as expected''
>  without any options for everybody.

Not re-request lease, simple renew.