First of, I found this GREAT article at http://deepakarora1984.blogspot.com/2010/08/gre-tunnels-unleashed-making-breaking.html, it’s really good. Thanks for explaining this for me Deepak. GRE Tunnels Unleashed – Making , Breaking & Troubleshooting Generic Routing Encapsulation (GRE) is a tunneling protocol that can encapsulate a wide variety of network layer protocol packet types inside an IP tunnels, creating a virtual [...]