wpa_supplicant and virtual machines

Jouni Malinen j
Sat Sep 27 12:50:54 PDT 2014

On Tue, Sep 16, 2014 at 02:32:35PM +0200, Petar Bogdanovic wrote:
> that works fine on OSX 10.6, but leaves my Linux VMs without an address.
> All VMs use bridged interfaces, i.e. their virtual ethernet interfaces
> are "bridged" with the main wireless interface.

IEEE 802.11 protocol does not support such a configuration, i.e., the
wireless station interface cannot send frames with the source address
being different from its own.

> That same problem does not happen in regular WPA-PSK networks.  So I
> wonder if WPA-EAP networks would require the VMs to run a separate
> wpa_supplicant in order to authenticate their virtual interfaces?

That sounds very strange.. I'm not sure how exactly you are setting this
up, but if this is layer 2 bridging to a wireless station interface, it
won't work regardless of what security mode you are using unless
something like 4-address WDS frames are used.

Jouni Malinen                                            PGP id EFC895FA

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