title: printing the uint8_t
body: <p>I have <code>uint8_t  orig[ETH_ALEN];</code></p>
  
  <p>How can I print it using <code>__printf(3, 4)</code></p>
  
  <p>which is defined as <code>#define __printf(a, b)                  __attribute__((format(printf, a, b)))</code></p>
  
  <p>the Orig should be ethernet hardware address.</p>