title: Adding Arrows inside itemize in latex
body: <p>I want to add a long left right arrow inside itemize.
  At the moment I use:</p>
  
  <pre><code>\begin{itemize}
  \item DNS &lt;-&gt; check\_dns
  \item DHCP &lt;-&gt; check\_dhcp
  \end{itemize}
  </code></pre>
  
  <p>But I want something like ↔ instead of &lt;->.</p>
  
  <p>Unfurtunatly I can't use "\longleftrightarrow" cause i get "\item invalid in math mode" if I try.</p>
  
  <p>any ideas?</p>