Virt Machine Manager - KVM - Network Default Not Active Fix 

This video shows you how to fix the "Network Default Not Active" message when attempting to start a virtual machine in virtual machine manager
Command List:
sudo virsh net-autostart default - automatically start on reboot
sudo virsh net-start default - start this time
sudo virsh net-destroy default - stop this time
sudo virsh net-autostart --disable default - do not start on reboot
#virtualmachine #kvm #virtmanager