ISATAP interface changing state on Windows Server 2012

Hello,

I have a Windows Server 2012 that apparently randomly keeps changing state to its ISATAP interface.

The logs that I can view from the event viewer are as follows:

"ISATAP router address *IPV6_ADDRESS* was set with status 0x0."

and also

"Isatap interface isatap. {INTERFACE_ID} with address *IPV6_ADDRESS* has been brought up."

The IDs of the two events are 4100 and 4200, do any of you have any idea what could cause this interface state change? What kind of impact does a series of similar events have on the server?

Thank You and kind regards

Giulia