请教设置ip别名的问题

YelloWTime

我用的是etch，/etc/network/interfaces内容是
allow-hotplug eth0
iface eth0 inet static
        address 192.168.125.6
        netmask 255.255.255.0
        network 192.168.125.0
        broadcast 192.168.125.255
        gateway 192.168.125.254
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 192.168.125.254
        dns-search mysite.com
现在我想给eth0增加一个ip地址192.168.125.5，请问应该怎么写，谢谢