/opt/unetlab/addons/qemu/csr1000v-169-1/ └── virtioa.qcow2 For images:

/opt/unetlab/addons/qemu/iosv-151-4/ └── virtioa.qcow2 Example for :

/opt/unetlab/addons/iol/bin/ └── L2-ADVENTERPRISE-M-15.2-20150703.bin After adding images, always run permissions fix: