Ivan Pepelnjak from ipSpace.net comments:

Microseconds after VXLAN was launched at VMworld 2011, someone started promoting it as a data center extension solution. Even though layer-2 DCI doesn’t make much sense (even to server people) and VXLAN is really not a DCI solution, the lure of misusing a technology was irresistible.

Read more at: Temper Your MacGyver Streak