Can't manually change mac address of TAP

benson · Post by **benson** » Thu Nov 07, 2019 5:17 pm

I installed the new version of OpenVPN (2.4.8) on windows 10. For some reason, I can't change the mac address of the TAP anymore? If I do an ipcconfig /all, still shows the original mac address of TAP. But it works on the old versions of OpenVPN. Maybe someone can help and point me the right direction for answers? This is on the new tap-windows6 driver (9.24.2). Thank you.

TinCanTech · Post by **TinCanTech** » Thu Nov 07, 2019 6:03 pm

Which version of TAP adaptor allowed you to change the MAC ?

benson · Post by **benson** » Thu Nov 07, 2019 6:19 pm

on TAP-Windows (9.23.3), it is possible to change the mac address of tap.

TinCanTech · Post by **TinCanTech** » Thu Nov 07, 2019 7:25 pm

What version of openvpn was that because I cannot change the MAC for TAP 9.23.3.601

The more detail you provide the better the answer you could get ..

benson · Post by **benson** » Thu Nov 07, 2019 7:53 pm

On OpenVPN 2.4.7, you can change the mac. Under Control Panel > Network and Sharing Center > change adapter settings > Right click on TAP-Windows Adapter V9 > Select Properties, click on Configure > Under Advanced tab, select MAC Address, then enter value. Use this format, e.g. 00FFBA9C1211
I only change the last 4 digits.

Tried this procedure on 2.4.8, it will not reflect on the ipconfig /all command.

TinCanTech · Post by **TinCanTech** » Thu Nov 07, 2019 8:47 pm

Yes, it looks like TAP adaptor no longer supports user defined MAC.

I have raised a report:
https://github.com/OpenVPN/tap-windows6/issues/97

OpenVPN Support Forum

Can't manually change mac address of TAP

Can't manually change mac address of TAP

Re: Can't manually change mac address of TAP

Re: Can't manually change mac address of TAP

Re: Can't manually change mac address of TAP

Re: Can't manually change mac address of TAP

Re: Can't manually change mac address of TAP