My issue is nearly identical to this question. I tried those solution and none worked. But I am using a different Android x86 image. I\'m using the ICS (4.0-RC1) asus_laptop ima
Update: If Android x86 does not work well for you, you might want to look at AndroVM. I run it in VirtualBox and have had no hardware related issues.
Real Answer:
Somewhat of a follow-up answer since I can't add comments yet. I think getting this setup is highly dependent on your host hardware. I am not using hardware that perfectly fits any of the current ISOs. So I tested all of them with all Ethernet settings to see what would work.
On a Dell Latitude D820 here is what I got:
For the two ISOs that would work for me (eeepc and tegav2), I added the following two lines to /etc/init.sh
(as per the other answer)
netcfg eth0 dhcp
setprop net.dns1 8.8.8.8