The firewalls ended up being primary with the same address and MAC. I later notice looking at the logs that both were going back an forth from primary to secondary 3 to 4 times a day since the upgrade. After it did that twice during the same weekend I decided to go back to 6.2.3 since no problem. I have not seen this problem documented anywhere. I have a colleague running 6.3.3 on a pair of 515 without any problem.
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
Check the current version availa...
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...