Qemu (kvm) internal network setup


I got a new notebook, a nice Thinkpad T61 with virtualization technology. I need to run some Windows system for development so I've decided to use the Kernel based Virtual Machine (KVM). The VMs should communicate over an internal network but should have access to the internet and I want access via network to them. So I setup a bridge with TUN/TAP devices masqueraded to my normal interface. HOST QEMU GUEST1 +---------------+ +--------------+ | 10.10.5.158 | | | LAN ---+---- eth0 | | | | | | | QEMU GUEST2 | +------+ +--+---+---- nic0 | +--------------+ | | tap0---+ | |192.168.100.5 | | | | | tap1---+ | +--------------+ | | | +------+ | | | | | br0 +--+----------------------+----…