Check that the CIDR provided for a virtualbox host only CIDR is specified as a host IP and netmask, e.g., 192.168.100.1/24, and not a network IP and netmask, e.g., 192.168.100.0/24. This will help prevent confusion like #1383 Signed-off-by: Chris Abernethy <cabernet@chrisabernethy.com> Signed-off-by: David Gageot <david@gageot.net>