title: What is the difference between wlan0 and wlan1 interface on raspberry Pi Model 3
body: <p>I have seen in /etc/network/interfaces file on my new raspberry Pi Model 3, two entries for wifi connections:</p>
  
  <pre><code>allow-hotplug wlan0
  iface wlan0 inet manual
      wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
  
  allow-hotplug wlan1
  iface wlan1 inet manual
      wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
  </code></pre>
  
  <p>Why is there 2 interfaces for wifi ?</p>
  
  <p>Thanks</p>