I am running Mandrake Linux 9.2 and set up a basic router to share a cable modem with a single ethernet card. I used the mandrake wizards and webmin to set up DHCP server to listen on eth0 and assign IP addresses to any computer which connects, and share the network connection.

This worked so great that I decided to expand. I bought 2 more network cards, Intel eepro100, plugged them in, and although /sbin/ifconfig detects them, I can't manipulate them in any of the wizards. It's like eth2 and eth3 don't exist.

How do I rig them to work? I know the cards themselves work, btw, because I independently verified them on another Mandrake box and set up a router between them.

What am I doing wrong?

Thanks in advance,

Dan

Output of /sbin/ifconfig:

eth0 Link encap:Ethernet HWaddr 00:10:B5:72:15:57
inet addr:192.0.0.1 Bcast:192.0.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:38260 errors:0 dropped:0 overruns:0 frame:0
TX packets:48365 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:5362528 (5.1 Mb) TX bytes:39643136 (37.8 Mb)
Interrupt:5 Base address:0x8000

eth1 Link encap:Ethernet HWaddr 00:A0:CC0:B8:45
inet addr:24.59.76.83 Bcast:255.255.255.255 Mask:255.255.248.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1350591 errors:5 dropped:0 overruns:0 frame:0
TX packets:31548 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:139895806 (133.4 Mb) TX bytes:2770007 (2.6 Mb)
Interrupt:11 Base address:0x1800

eth2 Link encap:Ethernet HWaddr 00:08:C7:CA:093
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:3 Base address:0x6000

eth3 Link encap:Ethernet HWaddr 00:08:C7:2A:F6:85
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:157 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:24959 (24.3 Kb) TX bytes:2304 (2.2 Kb)
Interrupt:11 Base address:0x2000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:43043 errors:0 dropped:0 overruns:0 frame:0
TX packets:43043 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9381060 (8.9 Mb) TX bytes:9381060 (8.9 Mb)

Dude, this is not the way to go. You only ever need two network cards for a router. On the external one (eth1 in your case) you attach the cable modem, and on the internal one (eth0) you attach a hub or switch. As long as you masquerade your cable connection, which it looks like you're doing, every box connected to the hub will be able to DHCP and get on the internet.