Realtek 8160 not detected on LFS

I completed LFS and it boots but I'm not able to get the networking to work. When I do a ifconfig it list the lo that is the loopback network but doesn't detect eth0 and also says doesn't exist. If i do a ifconfig -a it lists sit0 as well but I don't know whats that for. I also enabled the network drivers for realtex but still not working. Any suggestions guys.

I have a Realtek 8160 Ethernet Controller on a Gigabyte board.