On Tue, 2006-05-23 at 23:59 +0800, LC wrote: > I am trying to make a router using a FC4. I have 2 NICs in the machine. > Install FC4 using minimium. Eth0 is set to DHCP, connected to an ethernet > modem and ETH1 has IP 192.168.1.1, netmask 255.255.255.0 connected to a > switch. Installation was a success and rebooted the box. Clients machines > are unable to ping 192.168.1.1. But when i unplug the modem and reboot, > clients are ablt to ping 192.168.1.1. I realised if the box booted up both > ETH0 and ETH1, clients are able to ping 192.168.1.1. But if i ifdown ETH0 > and ifup ETH0, clients are able to get reply from 192.168.1.1. What's the other interface's address? If they're both 192.168.1.x with a 255.255.255.0 netmask you're going to strike problems, you've got two subnets, they need to be addressed accordingly. e.g. eth0 192.168.0.1/255.255.255.0 eth1 192.168.1.1/255.255.255.0 using 192.168.1.x (above) as its gateway and clients should use the 192.168.1.1 as their gateway -- (Currently running FC4, occasionally trying FC5.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.