This sign at my local grocery store (Picture)

  To anyone not familiar with how networks work, 127.0.0.1 is the IP address for the loopback interface or “home” for a device and 255.255.2...

 

To anyone not familiar with how networks work, 127.0.0.1 is the IP address for the loopback interface or “home” for a device and 255.255.255.0 is the subnet mask that routes local traffic. Those are the common defaults at least.Loop back goes all the way to 127.255.255.254 and even 0.0.0.0 is a mask. A terrible mask, but a mask.