Status of 2.4.4...
I still loose routes when combining 2.4.3 with 2.4.4 and Cisco.
But the good news is that it's not the case anymore with the following configurations:
1-pfSense 2.4.4 (priority 0), pfSense 2.4.4 (priority 0), DR Cisco (priority 1)
2-pfSense 2.4.4 (priority 0), BDR pfSense 2.4.4 (priority 1), DR Cisco (priority 1)
In addition, both pfSense devices have the following setting: redistribute connected route-map DNR6
New issues:
1-After the upgrade to 2.4.4, connected interfaces are not redistributed anymore. As a workaround, disabling/enabling the interface sometimes works! And when not, it has to be re-created!
2-In order to have pfSense act as the BDR (the way we typically need it), it has to redistribute a default route to other routers in the area. At a minimum, the option "default-information originate" should be available on the UI with ideally the possibility to also select "always". When configured this way for both the DR and BDR, 2 default routes will end up on all the routers.