PfSense VM Guest Can't See Host

[NOYB]

Maybe someone already knows the solution for this, so popping in here to ask before trying to recreate the wheel.

pfSense dev in virtual box can not see (ping) host (host only interface) when the host is connected to OpvenVPN server on production pfsense.
However the host can still see (ping) the pfSense guest on those interfaces.

How can I fix so that the pfSense guest can still see the host only interfaces on the host?  Doesn't seem to have any problem with the vbox host bridged interface.

Thanks