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Re: wlan0 hw address changes

> I need to tell a network admin the hardware address of my wlan0
> interface, so that he gives me access to the wifi network. The problem
> is that the hw address is changing everytime I use the wlan0 hardware
> switch...

So, first of all, use this as another argument to explain to your admin
that MAC filters are not a security measure, but a PITA noone needs.

>         ether b2:ad:31:c5:86:36  txqueuelen 1000  (Ethernet) ...
>         ether c0:cb:38:4c:56:8f  txqueuelen 1000  (Ethernet) ...
>         ether aa:c3:d0:e1:43:cb  txqueuelen 1000  (Ethernet) ...

What strikes me as odd is that the whole address changes, so it's
probably not the firmware, as a vendor randomising the vendor part of
their hardware addresses on their own would probably not get their stuff
through FCC or whatever regulations apply.

So, I assume it is your system either setting a random address, or
preventing the firmware from setting the real address.

Assuming you do not have macchanger or something like that installed
(guessing you wouldn't be asking if you had taken such measures ;)), I
only know of systemd-networkd having such a feature.


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Dominik George · Hundeshagenstr. 26 · 53225 Bonn
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