3G-Access-Point with ZD1211 - Problem: rfkill

Hoi,
I am trying to set up the Pi as an wifi access point providing internet access to all connected devices via a 3G USB Modem.
For the wifi I have a ZyDAS ZD1211B 802.11g usb dongle (Vunex Wifi Walker).
3G will be provided by: ZTE WCDMA Technologies MSM MF627/MF628/MF628+/MF636+ HSDPA/HSUPA.
My problem: hostapd is not starting, the error seems to be:

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rfkill: Cannot open RFKILL control device

I cannot run rfkill by hand:

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[root@alarmpi ~]# rfkill list
Can't open RFKILL control device: No such file or directory

Yes, the stick is detected:

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# iwconfig
lo        no wireless extensions.
eth0      no wireless extensions.
wlan0     IEEE 802.11bg  ESSID:off/any 
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on

Any tipps?

Hi!

I'm fiddling with my wifi connection, and found that rfkill is not really necessary. I suppose it is for devices that have the resources to stop all RF activity when needed. Like Notebooks, where you usually have at least a combination of buttons or a hardware switch. RasPi obviously does not have anything like this by default (perhaps you can make one with using GPIO and some code). You can install rfkill, but it won't find any device.

The problem must be something else, the lack of rfkill devices do not prevent proper connections. It should be something else, check the logs.

Hope it helps.

Try:

sudo apt-get install zd1211-firmware