Android x86 porting, unable to make it work

I solved the problem. This is what I do to get internet connection.

In my case, the gateway address was 192.168.0.254 and the DNS server was
192.168.0.10. I select an IP address for the VirtualBox host from the unused
ones (192.168.0.250).

1) First of all, I set my VirtualBox network configuration:

Attached to: Bridged Adapter

Adapter type: PCnet-FAST III

2) After that, I start Android from VirtualBox; after boot, I open a root
shell, pressing Alt+F1

3) Here, I use these commands:

ifconfig eth0 up 192.168.0.250
route add default gw 192.168.0.254 dev eth0
setprop net.dns1 192.168.0.10
4) Now, I return to Android (Alt + F7), and I can surf on internet!

Unfortunately, this process must be followed each time you start Android

In order to obtain gateway and DNS IP address, from Windows you can use this
command

ipconfig /all


After some research, I found simplest way to solve this! The Key is dhcpcd
and dns setting.

Config VirutalBox network card as Bridged Adapter. Adapter type: PCnet-FAST
III (Maybe other type is ok, i did not test)

Start Android from VirtualBox; after boot, open a root shell by pressing
Alt+F1, type following command:

dhcpcd
Type following command to set DNS server:

setprop net.dns1 yourDnsServerIp