I have a Dell PowerEdge 1850 server which has two 1GB NIC cards. After the server install, the second NIC doesn't show up in ifconfig command, nor does it show up in Webmin. Webmin will allow me to add the NIC, but on reboot, the card is gone. I went to /etc/network/interfaces and see no entries for NIC #2. Therefore, I duplicated NIC #1 entries and changed the second set from "eth0" to "eth1". plus, I set the IP address on NIC #2 to a different address. When I do a "ifup -a" command, I get an error message of "duplicate card".
How do I get the server to permanently recognize the second NIC card after reboot?