Stati c IP-адрес не работает в android программно

Question

Using Target Android версия 29. Попытка установки stati c IP-адреса на устройстве Android программно не работает. Дайте несколько советов по этому вопросу, пожалуйста, проверьте код ниже.

public static void setIpAssignment(String assign, WifiConfiguration wifiConf)
        throws SecurityException, IllegalArgumentException, NoSuchFieldException, IllegalAccessException {
    try {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Object ipConfiguration = wifiConf.getClass().getMethod("getIpConfiguration").invoke(wifiConf);
            setEnumField(ipConfiguration, assign, "ipAssignment");
        } else {
            setEnumField(wifiConf, assign, "ipAssignment");
        }
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    }
}

public static void setIpAddress(InetAddress addr, int prefixLength, WifiConfiguration wifiConf)
        throws SecurityException, IllegalArgumentException, NoSuchFieldException, IllegalAccessException,
        NoSuchMethodException, ClassNotFoundException, InstantiationException, InvocationTargetException {

    Object linkProperties = getField(wifiConf, "linkProperties");
    if (linkProperties == null) return;
    Class laClass = Class.forName("android.net.LinkAddress");
    Constructor laConstructor = laClass.getConstructor(new Class[]{InetAddress.class, int.class});
    Object linkAddress = laConstructor.newInstance(addr, prefixLength);

    ArrayList mLinkAddresses = (ArrayList) getDeclaredField(linkProperties, "mLinkAddresses");
    mLinkAddresses.clear();
    mLinkAddresses.add(linkAddress);
}