netif Option
------------

   This defines the set of network interfaces configured on the machine.
The interface attributes collected by FSinfo are the IP address, subnet
mask and hardware address.  Multiple interfaces may be defined for
hosts with several interfaces by an entry for each interface.  The
values given are sanity checked, but are currently unused for anything
else.

     netif       : "netif" <STRING> "{" list(netif_attrs) "}" ;
     
     netif_attrs : netif_attr "=" <STRING> ;
     
     netif_attr  : "inaddr" | "netmask" | "hwaddr" ;

   Examples:

     netif ie0 {
         inaddr  = 129.31.81.37
         netmask = 0xfffffe00
         hwaddr  = "08:00:20:01:a6:a5"
     }
     
     netif ec0 { }