@mdieder, you do realize that "qemu+tcp://%s-x/system" will only work in a situation like the one I originally described? I.e. you have to have a second IP address on that box, which is resolvable as <hostname>-x from the other host. Also, that whitespace before your VIR_MIGRATE_TUNNELLED would likely cause that option to be ignored.
@mdieder, you do realize that "qemu+tcp: //%s-x/ system" will only work in a situation like the one I originally described? I.e. you have to have a second IP address on that box, which is resolvable as <hostname>-x from the other host. Also, that whitespace before your VIR_MIGRATE_ TUNNELLED would likely cause that option to be ignored.