openvswitch-ipsec 1.4.0+git20120426-1 (armhf binary) in ubuntu quantal

 Open vSwitch is a production quality, multilayer, software-based, Ethernet
 virtual switch. It is designed to enable massive network automation through
 programmatic extension, while still supporting standard management interfaces
 and protocols (e.g. NetFlow, sFlow, SPAN, RSPAN, CLI, LACP, 802.1ag). In
 addition, it is designed to support distribution across multiple physical
 servers similar to VMware's vNetwork distributed vswitch or Cisco's Nexus
 1000V.
 .
 The ovs-monitor-ipsec script provides support for encrypting GRE
 tunnels with IPsec.