FreeBSD on Virtualbox: No network access

Weihang Wang weihang at
Thu Dec 9 21:40:20 UTC 2010

On Dec 9, 2010, at 3:40 PM, Chris Brennan wrote:

> On Thu, Dec 9, 2010 at 1:48 PM, Weihang Wang <weihang at> wrote:
>> Hi,
>> I do not configure a DHCP server. When my FreeBSD 6.0 is booting, there are
>> several DHCPDISCOVERY messages, finally it shows no DHCPOFFER received. Do I
>> need to configure a DHCP server myself? If I need a DHCP server? Where it
>> should be? Now I only have one test machine, Ubuntu as the host OS, two VMs
>> (both are FreeBSD 6.0) on this machine. I want this two VMs communicate with
>> each other.
>> Just go back to the DHCP stuff, when I use NAT mode, the guest OS FreeBSD
>> 6.0 could get DHCPOFFER successfully. Who is the DHCP server then?
>> When running dhclien em0, the results are similar to the DHCPDISCOVER
>> results during booting. No DHCPOFFERS received.
> It would appear that Ubuntu has not correctly installed the bridging
> adapter. Did you check out the links I provided on setting up a bridging
> device on Ubuntu w/ vBox? They worked for me, I set up an Ubuntu VM and in
> the VM setup a test VM of vBox to boot fbsd (8.1 in my case).
> NOTE: I do not recoomend setting up a VM within a VM, I did it strictly as a
> test to boot and get network access. Which it did.
> ______________________________________________


I am sorry I don't know which page you refer to... I am confusing now cause first, I don't know which mode could be best for my needs. What I need is two VMs on a real machine, these two VMs could communicate with each other. It seems bridged mode is suitable here. But there is no network access for bridged mode. 

BTW, when I use NAT mode, two VMs get the same IP address, and they could not get to each other.


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