title: What is the difference between udp(4) and udp(6)?
body: <p>Can somebody go over the syntax differences and possible use case differences between udp(4) and udp(6)?</p>
  
  <p><a href="http://nodejs.org/api/dgram.html#dgram_udp_datagram_sockets" rel="noreferrer">I noticed there is a difference marked in the Node documentation when creating a datagram socket.</a></p>