[libvirt-users] Mount URL as cdrom/iso KVM/QEMU

Hi Folks, According to the examples in http://libvirt.org/formatdomain.html#elementsDisks it should be possible to mount an iso /url as a cdrom, the example given is: </disk> <disk type='network' device='cdrom'> <driver name='qemu' type='raw'/> <source protocol="http" name="url_path"> <host name="hostname" port="80"/> </source> <target dev='hde' bus='ide' tray='open'/> <readonly/> </disk> I am unable to get this to work at all and wondered if I am just missing something obvious: Boot failed: Could not read from CDROM (code 0003) Actual XML in use snippet: <disk type='network' device='cdrom'> <driver name='qemu' type='raw'/> <source protocol="http" name="/debian-cd/current/amd64/iso-cd/debian-9.5.0-amd64-netinst.iso"> <host name="mirror.bytemark.co.uk" port="80"/> </source> <target dev='hdb' bus='ide' tray='open'/> <readonly/> </disk> libvirtd (libvirt) 3.9.0 QEMU emulator version 2.10.0 Is anyone able to offer any assistance or tips? I have tried putting the complete path including fqdn in the url_path as well, with and without http:// Many Thanks. Anthony.