UEFI bhyve and EFI shell at boot

[Peter Grehan]

>> That's also true for Ubuntu 16.04
>
> But this problem does not happen with Fedora 4.7

  It's guest-specific. Recent Fedora has the same issue, though 
RHEL/Centos, FreeBSD, and Windows don't since they place the bootloader 
in a standard location.

  There is a fix in progress for this to write out the UEFI nvvars to 
file so they can be preserved across a bhyve VM power cycle.

later,

Peter.