So, Having an issue with KVM on Ubuntu 14.04 that is driving me insane. This is a new box, so I will go through what I did: - Set up bonded NIC's. Failover, 1 active at a time - Set up a bridge on top of that bond. - Installed KVM on Ubuntu - Installed virt-manager on Ubuntu - Installed a VM without issue, but it wouldn't see the bridged interface, only virtual NAT. - Shut down the VM to try and diagnose. VM now refuses to start due a connection error. - Virt-manager and Virsh both refuse to create an VM's due to connection reset. Here is my network config: Code: # The loopback network interface auto lo iface lo inet loopback # EM1 Configuration auto em1 iface em1 inet manual bond-master bond0 bond-primary em1 # EM2 Configuration auto em2 iface em2 inet manual bond-master bond0 # Bond EM1 & EM2 auto bond0 iface bond0 inet manual bond-mode active-backup bond-miimon 100 bond-slaves none # Bridge for Bond0 auto br0 iface br0 inet static bridge_ports bond0 address 192.168.3.130 netmask 255.255.252.0 gateway 192.168.1.1 dns-nameservers 188.8.131.52 bridge-fd 9 bridge-hello 2 bridge-maxage 12 bridge-stp off Anyone have similar issues? I've sat here for hours trying to find a fix to get any VM's created, but I'm hitting a brick wall.