Doubtful, CARP has not changed protocol for many years. You might be thinking of pfsync, but that is mostly forwards compatible for a couple releases now.
On 2013 Jan 02 (Wed) at 15:30:48 +0100 (+0100), mxb wrote: :Yes, this sounds familiar. : :On 2 jan 2013, at 14:37, Mark Felder <[email protected]> wrote: : :> Didn't the CARP protocol change between these releases? I don't think it's :compatible. I'm sure someone else will chime in with the details, but I :believe I remember reading this on the list. : -- A candidate is a person who gets money from the rich and votes from the poor to protect them from each other.

