carp between RELENG_6 and RELENG_7

[Bill Marquette]

On Wed, Apr 2, 2008 at 7:57 AM, Mike Tancsa <mike at sentex.net> wrote:
> Does anyone know if there are there any issues running a pair of FreeBSD
> boxes, one RELENG_6 and one RELENG_7 in carp failover ?  Are there any
> compatibility issues ?

I believe the pfsync protocol version (and corresponding struct)
changed between these two releases.  If the lack of state
synchronization can be lived with (ie. it's a high availability
address for a service, not a firewall), you should have no other
issues with CARP.

--Bill