VRF support for Linux was added in kernel 4.5. In the Linux netdev 1.1 conference, there was a talk about this support, which showed one of the use-case as MPLS-VPN. This blog post tries to re-create the setup from demo on a kernel 4.15.

Linux supports veth and tun/tap types of virtual interfaces, which are used by VMs, Containers for providing networking. This post summarizes certain findings as a result of experimenting these virtual interfaces along with Linux's Ethernet bridge.