Dear All: Thank Lee Bradshaw & Hugo van der Merwe reply my questions so quickly, after taking a look at both files " /etc/init.d/network " and " /etc/pcmcia/network.opts ", I still have the same questions about the IPs:
1. In my " /etc/init.d/network " simply has two entries : ifconfig lo 127.0.0.1 route add -net 127.0.0.0 2. In my " /etc/pcmcia/network.opts " has following information : case "$ADDRESS" in *,*,*,*) IF_PORT="auto" # Use BOOTP [y/n] BOOTP="n" IPADDR="192.168.1.2" NETMASK="255.255.255.0" NETWORK="192.168.1.0" BROADCAST="192.168.100.255" GATEWAY="192.168.1.254" DOMAIN="birdynest.com.tw" DNS_1="192.168.1.1" ;; esac Well, I do use Lap-top to install Debian 2.1, since the first time installation, I only use one network pc-card, and assign it an IP address for my home-network, but now I insert the 2nd network pc-card to simulate an router ( sure I re-compile it as an router ). As soon as I rebooting the Linux, then I found both eth0, eth1 use the same IP ( 192.168.1.2 witch assigned from the beginning ), at the same time, I put this Linux router into a different network environment which have totally different subnet from the original home-network, one is eth0 192.168.2.254 netmask 255.255.255.0 ---> 192.168.2.0/24 another eth1 192.168.3.253 netmask 255.255.255.0 ---> 192.168.3.0/24 , and given this router a default route "0.0.0.0/0.0.0.0 192.168.3.254 : |--------------------192.168.2.254 | Linux |192.168.3.253--------------------192.168.3.254| in order to change IPs to the different NICs, and modify its routing table, I issue following command: ifconfig eth0 192.168.2.254 broadcast ....... netmask ....... route add -net 192.168.2.0 netmask ...... eth0 ifconfig eth1 192.168.3.253 broadcast ....... netmask ....... route add -net 192.168.3.0 netmask ...... eth0 route add default gw 192.168.3.254 of cause it will lost when the Linux have to reboot, so, should I modify the /etc/init.d/network via inserting these commands or what to do with the /etc/pcmcia/network.opts ? which file is actually referenced during booting processes, or, overwrite the configuration after booting completely ? Finally, those information, such like hostname, domain name, dns, ..... etc., which files should to be modified ? Thanks ! Nazareth Shu [EMAIL PROTECTED] Jun. 7, 2000