wpasupplicant and multiple/hidden SSIDs

Dan Williams dcbw at redhat.com
Fri Dec 7 18:57:15 EST 2007

On Fri, 2007-12-07 at 11:31 -0800, Dave Hansen wrote:
> On Fri, 2007-12-07 at 14:12 -0500, Dan Williams wrote:
> > What you _really_ want is ap_scan=1 + scan_ssid=1 in your network block.
> > Try that.  If your driver supports specific SSID scanning, it'll
> > probably work for you.  If your driver doesn't then you probably need to
> > get a better network card or find a good driver :)  Any driver based on
> > mac80211, or the ipw2200, or the hostap driver will work with
> > scan_ssid=1.  Most others, probably not. 
> I actually have an ipw2200.  
> The problem is that I don't think the scan_ssid=1 logic comes into play
> until it finds an explicitly hidden ssid.  In my case, I think
> wpasupplicant looks around and sees the ~10 "VISITOR" access points,
> notes that it doesn't have any config entries for them, then promptly
> ignores them. :(

You've tried scan_ssid=1 + ap_scan=1 already I take it?


> It partly doesn't find matches because the aps somehow don't advertise
> WPA when you're associated to the "VISITOR" ssid.  It hits this message,
> btw:
>         if (proto_match == 0)
>                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
> I actually went in and hacked wpa_supplicant_ssid_bss_match()  to trick
> wpasupplicant into trying to associate with the aps to get around this.
> -- Dave

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