Getting CARP to broadcast on a different interface

[Trond Endrestøl]

On Wed, 8 Jun 2016 14:43+0200, Niklaas Baudet von Gersdorff wrote:

> Hello,
> 
> is it possible to configure CARP in such a way that it sends its
> broadcasts on an interface different from the one that gets the shared
> IP address assigned? Unfortunately, my provider blocks broadcast and
> multicast on public interfaces of virtual machines.
> 
> However, they offer to set up an additional virtual NIC that directly
> connects multiple virtual machines on which broadcast and multicast are
> not blocked. So, while I assign a shared IP to the public interface
> vtnet0, I would like to configure CARP to broadcast on the private
> interface vtnet1.
> 
> Is that possible? Or are there alternatives for CARP that support this
> function?

Although it sounds pretty bad, you could set up CARP on the internal 
network and use those CARP events to control the main interfaces, e.g. 
re-adjust their annoncement intervals, or something equally awful.

You might end up locked out of your systems unless you can control 
them remotely using a third set of means, e.g. RDP.

Just a quick thought that popped up in my head.

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