bhyve and guest rebooting

[Aryeh Friedman]

As far we can tell bhyve simply terminates on guest shutdown regardless of
the reason (for example no difference [or we can find] in detecting if they
typed "halt" or "reboot" {or some other internal method of shutting down
the guest vm).   Is there anyway for the caller to detect this and/or is it
possible to set command line flags that enable bhyve to manage the reboot
itself?