virtualbox.org

Hi, i have:
* A host computer, network bridged, ip: [192.168.2.90], connected to LAN
* There are another computers beside the host, the ip: [192.168.2.10], [192.168.2.20], [192.168.2.30], ...
* The host computer installed VirtualBox, there are some guest computers:
** Guest 1, bridged adapter, ip: [192.168.2.91], attached on host's network bridge
** Guest 2, bridged adapter, ip: [192.168.2.92], attached on host's network bridge

The host computer [192.168.2.90] can connected to the neighbors well [192.168.2.10], [192.168.2.20], [192.168.2.30]
Every guests [192.168.2.91] & [192.168.2.92] can connected to the host [192.168.2.90] and the host's neighbors [192.168.2.10], [192.168.2.20], [192.168.2.30]
BUT each guests cannot connected to another [192.168.2.91] <=x=> [192.168.2.92]

Is there a solution to fix the problem? I want every computer (reals & virtuals) can connected well.

Firewall/s?

firewall OFF in the host & guest

Using Bridged your machines appear as just another PC on the LAN. Normal network and permissions.
What are the guests, and the hosts?

everything is working fine EXCEPT guest to guest.
every guests connected to host's network bridge.

all OS using win 7 64 bit.

See the design: