Any idea why this call always returns Wifi?

[imanta]

I am using the following to detect Wifi/Non-wifi and no matter what I do, it is always returning Wifi:

SCNetworkReachabilityRef scRef;
SCNetworkConnectionFlags scFlags;
scRef = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, URL);
if (scRef) {
     SCNetworkReachabilityGetFlags(scRef, &scFlags);
     if ((scFlags & kSCNetworkReachabilityFlagsIsWWAN) != 0) {
          // we are on 3G
          connType = [NSString stringWithFormat:@"&wifi=no"];
               
     } else {
          // we are not on 3G
          connType = [NSString stringWithFormat:@"&wifi=yes"];
     }
CFRelease(scRef);
}

Any one have any ideas why? It looks like scFlags is always returning (null).

Thanks in advance.