title: Implicit declaration of function 'ether_ntoa' is invalid in C99
body: <p>It's part of a series of functions that retrieve IP &amp; Mac addresses from the phone. </p>
  
  <pre><code>strcpy(temp, (char *)ether_ntoa((const struct ether_addr *)LLADDR(sdl)));
  </code></pre>
  
  <p>EDIT: No equivalent function needed, there were just a few missing headers.</p>
  
  <p>EDIT: Added cast to LLADDR(sdl)</p>