Hello! Attached there is a patch that fixes the used protocol (was udp - but nobody was listening...) to icmp echo and added the extension, that the dom0 and the other guest ips are also pinged. Because of the many different scenarios (three nested loops) over packet sizes, two guests and different ip addresses, one run of this test case takes now about 4.5 minutes. Kind regards Andreas Signed-off-by: Andreas Florath