Although this not directly to answer your question but I think you can try haproxy implementation. Very easy to setup.

http://haproxy.1wt.eu/

mike --

On Fri, Jul 17, 2009 at 3:58 AM, Filipe Brandenburger <filbranden@gmail.com> wrote:
Hi,

On Thu, Jul 16, 2009 at 15:53, Jerry Geis<geisj@pagestation.com> wrote:
> When that interface is disabled on box A and becomes active on box B
> what should Box B do to correctly update the ARP tables external to box B
> so the external world knows how to get to the new destination and not
> the old box A?

You can use the "arping" command to send an unsolicited ARP message to
the other hosts on your local network.

See "man arping".

HTH,
Filipe
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--
Mike Calizo
Registered Linux User # 365113

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Even the longest journey has to start with a small first-step