Handle bad netmask returned by virtualbox after hostonlyif creation. Fixes #1843
Handle bad netmask returned by virtualbox after hostonlyif creation. Fixes #1843

Signed-off-by: Ron Williams <9c9caefd4913a99cf00de7abcb17a2bf9c4fe384@gmail.com>

titanlien/machine,titanlien/machine,titanlien/machine