title: Finding an interface name from an IP address
body: <p>I need to get the interface name by providing an IP address. There is no system call to get this.</p>
  
  <p>I need an implementation for this in C or C++</p>
  
  <p>Already the reverse of this is available on Stack Overflow, <em><a href="https://stackoverflow.com/questions/259389/finding-an-ip-from-an-interface-name">Finding an IP address from an interface name</a></em>.</p>