Introduction to Crossbow - network virtualization

In the last newletter from bigadmin I refound the PDF document about the introduction to
Crossbow - network virtualization.

This is very interesting about how the new network interface will be designed in OpenSolaris and
later on in Solaris I think.

You define virtual interfaces in software on real interfaces.
You can assign the interfaces to zones, so all the IP features like QoS, firewall, .. can be used in the
zone.
Also routers between zones can be established and tracing is also available.

Can only suggest to read it.