FreeBSD on Virtualbox: No network access

Adam Vande More amvandemore at
Thu Dec 9 21:55:24 UTC 2010

On Thu, Dec 9, 2010 at 12:48 PM, Weihang Wang <weihang at> wrote:

> 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?

Bridged networking makes the guest behave like another physical installation
with respect to networking.  If your network doesn't have a DHCP server then
for DHCP to work one is required.  You don't need DHCP for networking
however, you could simply assign static addresses.

> 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.

Why are you using such an old version of FreeBSD?

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?

In NAT mode, VirtualBox provides it's internal DHCP server.

When running dhclien em0, the results are similar to the DHCPDISCOVER
> results during booting. No DHCPOFFERS received.

Adam Vande More

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