How to fix ipaddress

["J.H.Kim" <frog1120@gmail.com>]

Hi, everyone

I want to use network in my office locally.
Not connected to internet, I wish to do network in my office only.
The network cable is connected with cross-cable to another computer.

I set /etc/network/interfaces as follows :
     auto lo
     iface lo inet loopback
     allow-hotplug eth0
     iface eth0 inet static
           address 192.168.0.7
           netmask 255.255.255.0
           network 192.168.0.0
           broadcaset 192.168.0.255
           gateway 192.168.0.1
           dns-nameservers 192.168.0.1
           dns-search kornet


Sometimes ip address is set to 192.168.0.7.
But somtimes ip address is set to 169.254.171.33
which is not set by me, and I don't konw why that address
is set to my ip address.
I want to set my ipaddress 192.168.0.7 always.

Please tell me how to fix that problem.

Thanks in advnace.
Best Regards,
J.Hwan Kim