Why physical host nic can't be used in KVM
Why bridged networking is required for guest vm's in KVM ? Why we can't use the host nic to provide networking for guests.
2 Answers
Because it is a virtual machine. That means it doesn't have access to the real hardware. Thus qemu must create a virtual nic in the vm and ferry the packets to the real nic.
I think, there is a way to directly attach a physical network card to a kvm/qemu, but I am of no help with this. IMHO, there is a way to attach any or almost any physical pci and usb device to the kvm/qemu vm.
