QinQ и это все

OinQ и прочая подкраска

RFC 7348 - Virtual eXtensible Local Area Network (VXLAN)

Network Virtualization Using Generic Routing Encapsulation (NVGRE): NVGRE vs VXLAN: What’s the Difference?

Stateless transport tunneling (STT)

GENEVE (Generic Network Virtualization Encapsulation)

MPLS