On Sun, Oct 29, 2017 at 04:07:09AM -0700, msliu@xxxxxxxxxxxxxxxxx wrote: > I have performed following steps: > > $ virsh net-destroy default > $ virsh net-undefine default > > Now I couldn't start guest with following warning popup: > Error starting domain: Network not found: no network with matching name > 'default' > > Please advise how to re-create 'default' instead of reinstalling all > guests. This is a libvirt question. I have CCed the libvirt mailing list so you can continue discussion there. On Red Hat-based distros try reinstalling the libvirt-daemon-config-network package. On Debian-based distros try reinstalling the libvirt-daemon-system package. This should restore the /etc/libvirt/qemu/networks/default.xml file that you are missing. Stefan
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