rd rtl8139 (the default one), and use the user mode network stack.<br><br>
                        Note the script runs qemu in <a href="http://www.linux-kvm.org/page/Main_Page">KVM mode</a>.<br>
                        You must have kvm module (kvm-intel or kvm-amd) installed for your kernel, and the permission of /dev/kvm is set to allow your user to access it.<br>
                        Otherwise the KVM support will be disabled and it may run very slow.<br>
                        If you don't have qem