All components in the DETERLab Containers System have been upgraded as of June 15, 2016. The host OS for all containers is now Ubuntu 14.04. The QEMU-KVM package was upgraded to 2.51-1 and all OpenVZ components were upgraded to the latest versions.
Virtual Distributed Ethernet (VDE) was dropped as the QEMU-KVM network implementation and replaced with a Linux bridge/tap mechanism. This gives an order of magnitude speed increase for QEMU-KVM networking from roughly 450 MBs to 4.5 GBs.
To find out more, go to: http://www.deter-project.org/news/system_release_announcement_containers_v11