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Date: Fri, 12 Dec 2008 19:25:57 +0000 (UTC)
From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
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To: Vyacheslav Bocharov <adeepv@gmail.com>
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Cc: freebsd-net@freebsd.org
Subject: Re[2]: strange problem with ifconfig alias
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On Fri, 12 Dec 2008, Vyacheslav Bocharov wrote:

Hi,

>>> root@chip# ifconfig em1 alias 195.3.245.xx/30
>>> ifconfig: ioctl (SIOCAIFADDR): File exists
>
>> If there is already an ip in that range on the interface, you need to use:
>> ifconfig em1 alias 195.3.245.xx/32
> There are no other ip on any interfaces in that range
>
>> Next time include ifconfig -a so we know what addresses and interfaces
>> you have.  Makes diagnostics easier.
> I have included in mail:
>
> root@chip# ifconfig |grep 195.3.245.
> root@chip#

which freebsd version are you using?

/bz

PS: parameters like alias belong to the end of the command (but that
won't help you; just the general advise).

-- 
Bjoern A. Zeeb                      The greatest risk is not taking one.