title: No QNetworkConfiguration although I can connect to WIFI
body: <p>On my Laptop (Qt 5.11, Win10 x64) I am connected via WIFI, Qt https connections work. I wonder why I do not see any active network configurations, but can create HTTP requests. Also <code>m_networkConfigManager-&gt;isOnline()</code> is always <code>false</code>. Am I missing something, or is this just a Qt bug?</p>
  
  <pre><code>// signal / slot
  connect(m_networkConfigManager, &amp;QNetworkConfigurationManager::updateCompleted, this, &amp;CApplication::onNetworkConfigurationsUpdateCompleted, Qt::QueuedConnection);
  
  // called via signal
  void CApplication::onNetworkConfigurationsUpdateCompleted()
  {
      const QNetworkConfiguration config = m_networkConfigManager-&gt;defaultConfiguration();
      for (const QNetworkConfiguration &amp;config : m_networkConfigManager-&gt;allConfigurations())
      {
          // never reached
          const QString cs = CNetworkUtils::toString(config);
          CLogMessage(this).info("Network config: %1") &lt;&lt; cs;
      }
  
      // always false
      bool isOnline = m_networkConfigManager-&gt;isOnline();
      .... debug messages, I see onNetworkConfigurationsUpdateCompleted being called 3 times
      ....
  }
  </code></pre>
  
  <p>--- edit ---</p>
  
  <ul>
  <li>I see <code>onNetworkConfigurationsUpdateCompleted</code> being called 3 times and then somehow periodically every 10 secs.</li>
  <li>after I init <code>m_networkConfigManager</code> I call <code>m_networkConfigManager-&gt;updateConfigurations();</code></li>
  </ul>
  
  <p>--- edit 2 ---</p>
  
  <p>This version yields the same result (false) (not Queued)</p>
  
  <pre><code>connect(m_networkConfigManager, &amp;QNetworkConfigurationManager::updateCompleted, [ = ]
  {
     bool isOnline = m_networkConfigManager-&gt;isOnline();
     qDebug() &lt;&lt; isOnline;
  });
  </code></pre>
  
  <p>and this is never called</p>
  
  <pre><code>connect(m_networkConfigManager, &amp;QNetworkConfigurationManager::onlineStateChanged, [](bool isOnline)
  {
      qDebug() &lt;&lt; isOnline; // never get here
  });
  </code></pre>
  
  <p>--- edit 3 ---</p>
  
  <p>Follow up question: <a href="https://stackoverflow.com/questions/51824242/disable-qt-bearer-management-at-runtime">Disable Qt bearer management at runtime</a></p>