Network class specification $Revision: 1.2 $

Network
  device	ethN
  ipaddr	B.B.B.B
  netmask	B.B.B.B
  mac		B:B:B:B:B:B
  enabled

PS: A separate class of object is going to need to be used for
configuring the network interfaces of virtual sites (for security
purposes).  Just something to keep in mind.
