Source code: https://github.com/bagder/gw-mac
If you have working IPv6 addresses in your Windows. Working as in you can communicate with other machines over it.
$ git clone https://github.com/bagder/gw-mac.git
$ cd gw-mac
$ nmake -f Makefile.nmake
(now invoke the newly built tool)
$ netid-win.exe
When the tool works, it should just output information about:
- your IPv4 network's default gateway's mac address
- global IPv6 prefixes
The later part has been reported to crash, so if it does crash for you please invoke with a debugger and tell me which source line that causes the crash and possibly why it crashes there.