Hey list.. Im looking to upgrade my 3.9 boxes to 4.1. I plan on upgrading the standby boxes first, and am expecting them to still be paired up pf/carp/ospf-wise with the 3.9 active boxes while I burn them in. I know in the past I ran into an issue where there were differences between releases where pfsync wouldnt work(Im forgetting a bunch of details), but the point being when that had happened I needed to pull the trigger and upgrade the active firewalls at the same time as well.
So, would pfsync work between a 3.9 and 4.1 box? Has the pf syntax changed at all? Or can I restore my pf.conf from the 3.9 install onto the 4.1 install without needing to make modifications? Would carp still work? Anyway, any gotchas in a 3.9+4.1 pair of firewalls?
