Assuming that your DNS and NTP settings are correct:
1- I have the exact same issue with ACS 5.2 as well, and also with ISE 1.1 patch 4. It is a "known" issue due to the bug in the centrify software that has to do with Linux and AD integration
2- open a TAC case with Cisco and you need to be patience. Most of the Cisco TAC engineers are from India and probably don't know what you're talking about. Eventually the case will get escalated to an engineer who knows what you're talking and you will wait some more and provide him/her with debug when the issue happens again and wait for some more. Eventually, they will probably come back and tell you that it is a "bug" and wait for the next upgrade.
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...