Falla conexion a la red en VirtualBox

Hola a todos. ¿Alguien me podría explicar porqué algunos programas que usan mi lan interna no funcionan bien en vbox, y otros directamente no funcionan?.Lo que me gustaría saber es como vbox hace uso de la lan. Lo primero que noto es que dentro de vbox mi ip es algo como 10.0.2.15 cuando en mandriva es p.ej. 192.168.1.39. Por otro lado los ping a direcciones de mi lan no funcionan, solo al exterior, o a la puerta de enlace que me asigna vbox 10.0.2.2.

Lo cierto es que tengo un decodificador de satélite Deambox 500S, y éstos llevan linux incorporado, aunque la prática totalidad del software que hay es para win (una incongruencia, pero en fin), y tengo que correr mi partición de win para ciertas cosas y, la verdad es que estaba deseando eliminar esta partición y quedarme únicamente con win virtualizado, pero no hay manera.

Saludos.

Como aún no hay respuesta añado más información donde se vé el problema:

Log de arranque de uno de los programas que  no funciona DCC (dreambox control center):

Win nativo:

< 220 Willkomen auf Ihrer Dreambox.
> USER root
< 331 Please specify the password.
> PASS ********
< 230 Login successful. Have fun.
> CWD /etc
< 250 Directory successfully changed.
> PWD
< 257 "/etc"
Moved to: /etc
> PORT 192,168,1,33,4,108
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 2053 bytes received/sent in 0 milliseconds
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 192,168,1,33,4,115
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 1088 bytes received/sent in 0 milliseconds
> CWD /mnt
< 250 Directory successfully changed.
> PWD
< 257 "/var/mnt"
Moved to: /var/mnt
> PORT 192,168,1,33,4,117
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 134 bytes received/sent in 0 milliseconds
> PWD
< 257 "/var/mnt"
Moved to: /var/tuxbox/config/enigma
Moved to: /var/tuxbox/config
Moved to: /
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 192,168,1,33,4,125
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 1088 bytes received/sent in 0 milliseconds
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 192,168,1,33,4,127
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 1088 bytes received/sent in 16 milliseconds
> PORT 192,168,1,33,4,129
< 200 PORT command successful. Consider using PASV.
> LIST
< 150 Here comes the directory listing.
< 226 Directory send OK.
! 1088 bytes received/sent in 0 milliseconds

Win virtualizado:

< 220 Willkomen auf Ihrer Dreambox.
> USER root
< 331 Please specify the password.
> PASS ******
< 230 Login successful. Have fun.
> CWD /etc
< 250 Directory successfully changed.
> PWD
< 257 "/etc"
Moved to: /etc
> PORT 10,0,2,15,4,46
< 500 Illegal PORT command.
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 10,0,2,15,4,53
< 500 Illegal PORT command.
> CWD /mnt
< 250 Directory successfully changed.
> PWD
< 257 "/var/mnt"
Moved to: /var/mnt
> PORT 10,0,2,15,4,55
< 500 Illegal PORT command.
> PWD
< 257 "/var/mnt"
Moved to: /var/tuxbox/config/enigma
Moved to: /var/tuxbox/config
Moved to: /
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 10,0,2,15,4,63
< 500 Illegal PORT command.
> CWD /
< 250 Directory successfully changed.
> PWD
< 257 "/"
Moved to: /
> PORT 10,0,2,15,4,65
< 500 Illegal PORT command.
> PORT 10,0,2,15,4,67
< 500 Illegal PORT command.