interfaces配置文件问题

[heidern]

auto eth0
iface eth0 inet static
address 192.0.0.168
netmask 255.255.254.0
network 192.0.0
broadcast 192.0.1.255
gateway 192.0.0.1
iface eth0:0 inet static
address 192.0.2.168
netmask 255.255.255.0
network 192.0.2
broadcast 192.0.2.255
iface eth0:1 inet static
address 192.168.30.168
netmask 255.255.255.0
network 192.168.30
broadcast 192.168.30.255

我这样写 为什么不能自动设置eth0:0 eth0:1??请高手指教