title: Network link between multiple VirtualBox machines
body: <p>I am trying out a conferencing application (BigBlueButton).</p>
  
  <p>For this I created an Ubuntu virtual machine that functions as the application server. On this machine I can test the application by navigating to the app url (for example <a href="http://10.0.2.15" rel="noreferrer">http://10.0.2.15</a>).</p>
  
  <p>I also created a second virtual machine that should function as a client. On this machine I want to be able to navigate to the server as well, but that doesn't seem to be working. If I try to navigate from the client to the server by using the app-url I get nothing, followed by a timeout.</p>
  
  <p>To establish a network between the two machines I tried the following solutions:</p>
  
  <ul>
  <li>Create a second network adapter on each virtual machine and attach to "Host-only Adapter" with name "vboxnet0"</li>
  <li>Create a second adapter on each machine and attach to "Internal network" named "intnet".</li>
  </ul>
  
  <p>I thought that either of above options would be a good solutions, but none of them works.</p>
  
  <p>Can anyone help me out here?</p>
  
  <p>FYI I am using MacOS X as host system.</p>
  
  <p>EDIT:
  I created my second machine by cloning the first one (using the clone utility). Maybe this causes both machines to be identical which makes them indistinguishable on a network. Would this cause a problem? (As a desktop developer I'm a bit of a noob when it comes to I.T.)</p>