VirtualBox

Access to VB guest from Host

VBoxManage setextradata <guestname> "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/HostPort" 2222
VBoxManage setextradata <guestname> "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/GuestPort" 22
VBoxManage setextradata <guestname> "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/Protocol" TCP

Configuration error: Failed to get the "MAC" value

Configuration error: Failed to get the "MAC" value (VERR_CFGM_VALUE_NOT_FOUND).
Unknown error creating VM (VERR_CFGM_VALUE_NOT_FOUND).

Código Resultado: 
NS_ERROR_FAILURE (0x80004005)
Componente: 
Console
Interface: 
IConsole {e3c6d4a1-a935-47ca-b16d-f9e9c496e53e}

To fix: If you are using an Intel netword card replace "pcnet" with "e1000"

Debian lenny install

To solve kernel module problem

sudo aptitude install virtualbox-ose virtualbox-ose-source module-assistant
sudo m-a prepare
sudo m-a a-i virtualbox-ose
sudo adduser [user] vboxusers
modprobe vboxdrv

Reference: Aaron Toponce: VirtualBox OSE on Debian/Ubuntu Linux