"Version 3.3 of the Linux kernel offers another way to team multiple Ethernet devices. Support for ‘Open vSwitch’, a virtual network switch that was specifically developed for virtualised environments, has also been added. Byte Queue Limits are designed to reduce the latencies that cause the much-discussed ‘buffer bloat’..."

http://www.h-online.com/open/features/Kernel-Log-Coming-in-3-3-Part-1-Networking-1421959.html