i configured my new computer (mdk9.2) to be a gateway for the old one.
New computer is connected to the internet with adsl on usb (CDCEther driver). This conexion works very well : eth0.
Then there is a 3com (3c940 gigabit LOM) ethernet card on the motherboard (Asus p4c800) of this new computer. I used drakegw to configure my new computer as a gateway via this onboard ethernet card (sk98lin driver) : eth1.
What is strange is that it gives 192.168.1.1 as the default address for this computer instead of the usual 192.168.0.1. Anyway...
dhcpd is launched on this new computer.
Then i put an ethernet cross over cable between my new and my old computer.
Old computer (mdk9.2 also) has a PCI CNet fast 200 fast ethernet adapter 10/100 (r8169 driver). And as i configure the net with drakconnect on the old computer, it will never work. i tried to tell him it had to have its address via dhcp. I tried to impose static address.
And there is still these "dhcp host", "host name", "zeroconf host name" fields to fill. And i still don't know which host it is about. The client or the gateway ???
I turned off every firewall. I tried many different tweaks such as :
ifconfig eth0 192.168.1.2 netmask 255.255.255.0
route -ve add default gw 192.168.1.1
But it never worked.

Hi Christophe,

Can the old computer ping the new computer? If it can, but it can't get onto the internet then either routing is wrong, or the new computer isn't acting as a gateway. If it can't then you don't have the two internal interfaces set up right.

It might also be worth posting the output of ifconfig and netstat -r for each computer.