This allows auto configure a address which remains the same (except the prefix part) even if it's moved to another network, address will be MAC based. More information is available in RFC4941.
Here's the solution to the question how to persistently disable Windows 2012 R2 server IPv6 privacy addressing.I know many people suggested using Group Policy editor (gpedit.msc) or editing the Windows registry keys (regedit.exe) but those simply won't work.
All you need to do is open Administrative PowerShell and run following commands:
Set-NetIPv6Protocol -RandomizeIdentifiers Disabled
Set-NetIPv6Protocol -UseTemporaryAddresses Disabled
That's it! Now it's done and also remains that way. The old netsh based settings are reset after a system reboot.
So if you're like me, you've probably tried the commands seen below. Just to find out that these settings remain only active until the system is restarted. I don't know why restart causes the configuration settings to get lost even if there's store=persistent option there.
netsh interface ipv6 set global randomizeidentifiers=disabled store=active
netsh interface ipv6 set global randomizeidentifiers=disabled store=persistent
netsh interface ipv6 set privacy state=disabled store=active
netsh interface ipv6 set privacy state=disabled store=persistent
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