Re: How to activate MAC address randomization?

On 04/29/2016 09:07 PM, Thomas Haller wrote:
On Fri, 2016-04-29 at 16:09 -0400, Chris Laprise wrote:

I just installed NetworkManager 1.2 in fedora 23 in the hopes that I
get mac randomization working. Only problem is there's no sign of a
setting for this in nmcli or the applet. I found a reference to a
setting on the NetworkManager.conf manpage which states:

             If left unspecified, MAC address randomization is

But its not clear what range of values should be specified here. The
nm-settings manpage suggests this is a valid way to turn on

wifi.mac-address-randomization=2 /etc/NetworkManager/NetworkManager.conf

However, it has no effect. I'm not sure what I'm missing here.

How can you tell that it has no effect?


I can tell its not randomizing when I check the address from ifconfig or 'macchanger -s'. The original address is shown.

Setting default values in /etc/NetworkManager/NetworkManager.conf would
work, for that you need to leave the per-connection value at "default".
After editing the connection, you must always reload with `killall
-SIGHUP NetworkManager`.

So if my NetworkManager.conf looks like the following, it should work...?




The 'unmanaged' line is a reference to Qubes virtual interfaces; it should have no bearing on wifi.

mac-address-randomization requires support by Hardware and wpa-
supplicant. On Fedora23 I get a failure and the logfile reads:

   device (wlp3s0): Activation: (wifi) couldn't build wireless configuration: 802-11-wireless: cannot enable 
mac-randomization due to missing supplicant support

Which log... dmesg or journalctl NetworkManager.service ?

The version of wpa_supplicant I have in f23 is 2.4. This should support the feature. But I think you're implying that iwlwifi and/or the hardware are also a factor. What would be helpful is a list of hardware and driver versions that are known to work with randomization.



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