Upstream Copyright Holders:
- Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012 Nicira Networks.
+ Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
Copyright (c) 2008,2009,2010 Citrix Systems, Inc.
and authors listed above.