virsh net-dumpxml default > /var/tmp/file.xml
vim /var/tmp/file.xml 修改成你自己想要的网络 DHCP 池
# Stop all VMs
virsh net-destroy default
virsh net-create --file /var/tmp/file.xml
systemctl restart libvirtd
snap restart multipass.multipassd
# restart VMs
virsh net-dhcp-leases default