/etc/network/interfaces: network option

[Rakotomandimby Mihamina <mihamina@gulfsat.mg>]

Hi all,
Let a /etc/network/interfaces be, with these lines:
  iface eth0 inet static
    address 192.168.1.15
    network 192.168.1.0
    broadcast 192.168.1.255
    gateway 192.168.1.254

What is the role of 'network'?
I mean:

If I am on a 192.168.1.8/27:

   address 192.168.1.8
   netmask 255.255.255.224

What to put as 'network'?

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