3

I found that the IPv6 link local address was generated randomly in Windows 7, not following the EUI-64 standard. Then I found this link and followed its guide:

netsh interface ipv6 set global randomizeidentifiers=disabled
netsh interface ipv6 set privacy state=disabled

However, after rebooting, I found the link local address was still generated randomly. How can I make Windows 7 use the EUI-64 standard?

Thanks for your help!

Paul Gear
  • 3,938
  • 15
  • 36
Frank
  • 33
  • 1
  • 4

2 Answers2

2

Open up a Command Prompt in Administrator mode and run the following commands :

netsh interface ipv6 set privacy state=disabled store=active
netsh interface ipv6 set privacy state=disabled store=persistent
netsh interface ipv6 set global randomizeidentifiers=disabled store=active
netsh interface ipv6 set global randomizeidentifiers=disabled store=persistent

Each one should respond “Ok”. If you didn’t launch the Command Prompt in Administrator, it will say the command required elevation.

Exit the command prompt, and reboot.

When your computer has rebooted, it should auto-configure itself using EUI-64 (based on the MAC address of the interface) within the subnet given in the router advertisement.

Atnaize
  • 148
  • 1
  • 1
  • 8
2

FYI, the Modified EUI-64 format is no longer the standard (see RFC8064). That's why Windows and other operating systems have switched to using randomised identifiers by default. Also, temporary (privacy) addresses were standardised years ago by RFC4941. So Windows does the right thing by default. It's fine to switch them off, but it does reduce your privacy protection.

Community
  • 1
Brian Carpenter
  • 21
  • 1