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Date: Fri, 13 Jul 2012 19:48:30 +1000
From: Peter Jeremy <peter@rulingia.com>
To: Yuri <yuri@rawbw.com>
Message-ID: <20120713094830.GA83006@server.rulingia.com>
References: <4FFF3683.7020107@rawbw.com>
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Cc: freebsd-net@freebsd.org
Subject: Re: System doesn't detect unplugged network cable and doesn't set
 interface up properly with DHCP
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On 2012-Jul-12 13:41:39 -0700, Yuri <yuri@rawbw.com> wrote:
>I have the simplest possible DHCP setup: ifconfig_re0=3D"DHCP" in=20
>/etc/rc.conf.
>
>When the system boots, it gets connected fine.
>
>Now,  I disconnect my laptop and connect it to another network.
>When cable is disconnected, IP address of this interface stays the same,=
=20
>old one is not removed.
>When I plug it into another network, the same IP address stays. New IP=20
>doesn't get set. This is bad.
>So I have to manually do 'ifconfig re0 down && remove <OLD-IP> &&=20
>ifconfig re0 up'.

This is a bug in dhclient - see PR bin/166656, which includes a fix.

--=20
Peter Jeremy

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