Overview
A vRouter supports hot-plugging, which allows a running vRouter to automatically discover a PCI network interface that is virtually plugged into the vRouter , that is, a guest virtual machine (VM), without having to restart the router. After the interface is discovered, you can configure it as a data plane interface as described in LAN Interfaces Reference Guide.
vRouter hot-plugging is supported on the VMware ESX and Linux Kernel-based Virtual Machine (KVM) virtualization platforms.
Note: Ubuntu 14.04 comes with Linux kernel version 3.13.0, which does not support hot-plugging. To get hot-plugging to work on Ubuntu 14.04, you must upgrade your Ubuntu software to use Linux kernel version 3.13.1.