RPi B - No HDMI, nor mouse either keyboard

[Krzysztof Kowalski]

Hi,
I have only crossover Ethernet cable, freebsd-10.3-release at VirtualBox and
RPi B.
IMHO, I need to run dhcp server under freebsd at VB and setup RPi to use um0
to connect by DHCP, to be able to ssh into RPi, am I correct? Or RPi will
connect via DHCP to host?
VB host is Win7- using WiFi from mobile router huawei.

Regards,
Krzysztof