How to handle multiple SSIDs with the same BSS

Jouni Malinen j
Wed Dec 23 11:14:00 PST 2009

On Wed, Dec 23, 2009 at 04:48:11AM -0800, Marcel Holtmann wrote:

> BSS 00:1a:a1:53:50:a0 (on wlan0)
> 	SSID: Private

> BSS 00:1a:a1:53:50:a0 (on wlan0)
> 	SSID: Public

> When using the wpa_supplicant D-Bus interface, every BSS can only be
> listed once and so we either see "Private" or "Public", but never
> actually both of them. How should this be handled.

I wasn't aware that there is this kind of limitation in the D-Bus
interface. It is clearly broken if it cannot include both of those

> Also looking into the register_bss callbacks, you only get the BSS
> address and not the set of IE.

I don't know how this mechanism is supposed to be used, but there needs
to be a way for fetching more information about the BSS and BSSID by
itself is not a sufficient key for identifying which BSS is being
queried for (need to have BSSID,SSID pair or some other internally
generated identifier which can be guaranteed to be unique).

Jouni Malinen                                            PGP id EFC895FA

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