title: Wireshark not showing all traffic
body: <p>I'm using wireshark in Kali v2017.1 for educational purposes on &quot;device 2&quot;.
  When scanning, it does not show all the traffic. Device 1 + 2 are using the same lan and the same switch ip (IP device 1: 192.168.62.65 , IP device 2: 192.168.62.120)
  Wireshark does not show the network traffic of device 1. It only shows few hosts network and packet data.</p>
  <p>What is going wrong?</p>