When i installed DC8 and create first DC agent -my mistake was that i puted IP adress in agent to communicate with server now i know that i had put HOSTNAME for server now i wouldn't have that problem.
Now i need migrate server on new ip range and i know that i will lost communication with agents. I have arround 300 agents and try find best solution how change in all agent ip adress to hostname of DC8 server before i migrate same one.
Regards,
Sebastijan