Internet not working on Virt-manager guest
I am using Ubuntu 12.04.
My laptop gets internet from a wireless router which is connected to a modem.
I already have a full working Centos 6 vm with Virtualbox which has working internet.
I am trying to use Centos 6 in a Virt-manager virtual machine with KVM.
I have installed created and installed Centos 6 with Virt-manager and everything seems to be working except the internet.
On both Virtualbox and Virt-manager I am using NAT but internet is only working on Virtualbox.
I have tried selecting different NAT device models but internet still didn't work.
I have attached screenshots of the my Virtualbox and Virt-manager network configs.