--- /usr/lib/python2.7/site-packages/wicd/wnettools.py	2012-10-16 03:23:12.000000000 +0200
+++ tmp/wnettools.py	2012-11-14 11:45:09.704667937 +0100
@@ -131,6 +131,26 @@
         print 'couldn\'t retrieve default gateway from route -n'
     return gateway
 
+def isWireless(devname):
+    """ 
+    classic style wifi device classification using linux/wireless.h 
+    This should be extended or replaced by nl80211.h style classification
+    in the future, if wireless.h is fully replaced.
+    """
+    we = None
+    for t in [socket.AF_INET, socket.AF_INET6, socket.AF_IPX, socket.AF_AX25, socket.AF_APPLETALK ]:
+        sk = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        if sk is not None: break
+        skfd = sk.fileno()
+        try:
+            #define SIOCGIWNAME 0x8b01 in linux/wireless.h
+            # "used to verify the presence of wireless extensions"
+            we = fcntl.ioctl(skfd, 0x8b01, devname)
+            except:
+                pass
+            sk.close()
+            return we is not None
+
 def GetWirelessInterfaces():
     """ Get available wireless interfaces.
 
@@ -141,9 +161,8 @@
 
     """
     dev_dir = '/sys/class/net/'
-    ifnames = [iface for iface in os.listdir(dev_dir)
-               if os.path.isdir(dev_dir + iface) and 
-                  'wireless' in os.listdir(dev_dir + iface)]
+    ifnames = [iface for iface in os.listdir(dev_dir) and 
+                  isWireless(str(iface))]
     
     return ifnames