vde 1.5.11-1ubuntu2 (sparc binary) in ubuntu gutsy

 VDE is a virtual switch that can connect multiple virtual machines together,
 both local and remote.
 .
 Components of the VDE architecture are VDE switches (virtual counterpart of
 ethernet switches) and VDE cables (virtual counterpart of a crossed-cable used
 to connect two switches).
 .
 All units connected to the VDE see each other as they were on a real ethernet.
 A real Linux box can be connected to the VDE using a tap interface (TUNTAP)
 (packets can be further routed using standard linux methods). It is possible
 to join two VDE switches -- also running on different real computers -- using
 virtual VDE cables. UML (user-mode-linux) and QEMU virtual machines can be
 connected to the VDE.
 .
 Examples of VDE uses:
 .
  - With VDE it is possible to create a virtual network of UML machines running
    on several real computer
  - VDE can be used to create tunnels (even crossing masqueraded networks)
  - VDE can provide mobility support. Changing a VDE cable with another does not
    affect the communications in place. The new VDE cable can use a completely
    different path on the real net. VDE supports also multiple concurrent VDE
    cables between a pair of VDE-switches during the hand-off. This eliminates
    some possible hiccups of communications due to hand-offs.