title: ettercap not scanning all hosts
body: <p>I tried running running ettercap as follows:</p>
  
  <pre><code>sudo ettercap -i eth0 -Tq -M arp:remote,oneway -w out.data // /10.8.40.250/
  </code></pre>
  
  <p>But ettercap is able to add only 2 (sometimes 1) hosts to the hosts list.</p>
  
  <pre><code>Scanning the whole netmask for 8191 hosts...
  * |==================================================&gt;| 100.00 %
  
  1 hosts added to the hosts list...
  
  ARP poisoning victims:
  
  GROUP 1 : ANY (all the hosts in the list)
  
  Starting Unified sniffing...
  
  Text only Interface activated...
  Hit 'h' for inline help
  </code></pre>
  
  <p>Why is it only printing group 1?</p>
  
  <p>If I try to poison a particular host,</p>
  
  <pre><code>sudo ettercap -i eth0 -Tq -M arp:remote,oneway -w out.data /10.8.41.202/ /10.8.40.250/
  </code></pre>
  
  <p>It works!</p>
  
  <p>my ip: 10.8.57.121 subnet mask: 255.255.224.0</p>
  
  <p>I was able to run the exact same thing some time ago, add 20-30 hosts and successfully ARP poison most of them.
  What am I doing wrong now?</p>