In order to configure the lance ethernet (le0) device to support more
than one ip address, do the following:

1.  Create entries in /etc/hosts for each hostname your physical machine
    will appear as. 

 128.195.10.31  myhost
 128.195.10.46  myhost2
 128.195.10.78  myhost3
		
2.  Create /etc/hostname.le0:n files that contain the hostname for the
    virtual host n.  Note that hostname.le0:0 is the same as hostname.le0
			
 /etc/hostname.le0   (Contains name myhost)
 /etc/hostname.le0:1 (Contains name myhost2)
 /etc/hostname.le0:2 (Contains name myhost3)

The above changes will cause the virtual hosts to be configured at boot
time. 

You can also directly enable/modify a logical hosts configuration by
running ifconfig directly on one of the logical hosts by using the le0:n
naming scheme. 

 % ifconfig le0:1 plumb
 % ifconfig le0:1 up
 % ifconfig le0:1 129.153.76.72
 % ifconfig le0:1 down