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Date: Fri, 11 Apr 2008 10:48:00 -0300
From: "Alexandre Biancalana" <biancalana@gmail.com>
To: "Alexander Vyrlanovich" <iskander@apple-park.kiev.ua>
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References: <A642D655-6719-48EE-BCC8-BDCCE299237D@apple-park.kiev.ua>
	<1207841575.1433.44.camel@kensho.c7.ca>
	<5DB9929A-C27D-482D-B4DF-BD55621E94BF@apple-park.kiev.ua>
Cc: freebsd-pf@freebsd.org
Subject: Re: carpdev
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On 4/11/08, Alexander Vyrlanovich <iskander@apple-park.kiev.ua> wrote:
> I mean ifconfig carp0 carpdev iface
>  to attach carp pseudo-device to iface.
>
>  The goals is to have physical iface and attached carp device
>  configured in different IP subnets like OpenBSD can do.
>  (for example if ISP assign /30 subnet to me, where only two IPs
>  can be located)

This is not native. There is a patch the implement this feature. I use
this on 2 setups and I've no problem at all. Look the archives.