Single IP failover without carpdev

[Alexandre Biancalana]

Hi list,

  I'm using 6-STABLE and need to do failover between 2 firewall machines,
but my Internet connection have just one valid ip address.
  Carp documentation describes that carp interface is associated with
physical interfaces via ip address configuration. How can I associate carp
interface with physical interface without carpdev ? Exists some patch that
port this funcionality from OpenBSD to 6-STABLE ? When it will be available
?

 Thanks for any hints

 Alexandre