I installed Suse Linux Professional 9.1 on Thinkpad A21P. It detected the Ethernet Card, and loaded e100 module. But the problem is that I can access internet via web brower. Then I run the command "/sbin/ifconfig", got the following message:

lo Link encap: Local Loopback
inet addr: 127.0.0.1 Mask: 255.0.0.0
...


sit0 Link encap: IPv6-in-IPv4
inet6 addr: ::127.0.0.1/96 Scope:Unknown
UP RUNNING NOARP MTU:1400 Metric:1
RX packets:0 errors: 0 dropped: 0 overrun: 0 frame: 0
TX packets:0 errors: 0 dropped: 0 overrun: 0 frame: 0
collisions: 0 txqueuelen: 0
RX bytes: 0 (0.0 b) TX bytes: 0 (0.0 b)

But you can still access the web via a web browser?