I want to use the following code for my application:

```
InetAddress inetAddress;
try {
        inetAddress = InetAddress.getByName(hostname);
} catch (UnknownHostException e) {
        return -1;
}

```

It works well on most of the devices I've tested but on the Nexus S Europe and a Huawei device, it throws an exception.

> 
> cannot establish route for 192.168.010.200: unkown host
> 
> 
> 

I've already tried to fix it using the following code in my Application class, but without success:

```
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitNetwork().build();
StrictMode.setThreadPolicy(policy);

```

I've also tried to use AsyncTask but I got the same error. Here is the code I used:

```
private int mInetAddr = -1;
private boolean mInetAck = false; // Acknowledgement

private class AsyncInetAddress extends AsyncTask<String, Void, Void>
{
    @Override
    protected Void doInBackground(String... hostname)
    {
        InetAddress inetAddress;
        try
        {
            inetAddress = InetAddress.getByName(hostname[0]);
        }
        catch (UnknownHostException e)
        {
            mInetAddr = -1;
            return null;
        }

        byte[] addrBytes;
        int addr;
        addrBytes = inetAddress.getAddress();
        addr = ((addrBytes[3] & 0xff) << 24)
                | ((addrBytes[2] & 0xff) << 16)
                | ((addrBytes[1] & 0xff) << 8)
                | (addrBytes[0] & 0xff);
        mInetAddr = addr;
        return null;
    }

    @Override
    protected void onPostExecute(Void result)
    {
        mInetAck = true; // Acknowledgement
    }
}

```

Do you have any idea on how I could fix that ?

Thanks.

**Edit: I've tried on some other devices, problem looks to be present only on version 4.0.\* . Works great on 2.\* , 3.\* and 4.1+.**

Now the problem is located at that line:

```
 if (!connMgr.requestRouteToHost(2, inetAddr))

```

Where `inetAddr = -938825536`. The first param is the MMS type. The condition is always true under a device running 4.0.3 or 4.0.4.