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From: Yuri Pankov <yuri.pankov@gmail.com>
To: freebsd@dreamchaser.org
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Cc: freebsd-questions@freebsd.org
Subject: Re: ifconfig -- how to remove address and mask?
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On Sun, 2007-10-28 at 21:14 -0700, freebsd@dreamchaser.org wrote:
> running 6.1,
> 
> Is there a way to bring an interface down and remove the ipaddr and mask?
> I've tried ifconfig destroy with no effect, and I'm getting tired of
> twiddling rc.conf and rebooting...
> 
> The problem arises when testing a new configuration where an existing
> interface has an assigned ip addr, and is then changed to be used with
> pppoe.  The routine tables get really confused...
> 
> Thanks,
> 
> Gary

Try  ifconfig <interface> delete.


HTH,
Yuri