FreeBSD on Virtualbox: No network access

Adam Vande More amvandemore at
Thu Dec 9 04:47:50 UTC 2010

On Wed, Dec 8, 2010 at 10:34 PM, Weihang Wang <weihang at> wrote:

> Hi,
> Could someone tell me how to enable Bridge mode?

Seems like you already know how since you do it below.

> I just change the network settings of my virtual machine, change it to
> bridged mode. I also select the eth0, which is the physical interface of my
> system.
> Then in my virtual machine, I add one line:
> ifconfig_em0="DHCP" in /etc/rc.conf file.
> I have changed each of the five virtual interfaces Intel and ..., but I
> could not get network access.

ifconfig_em0="DHCP" would only work for the intel adapters, not amd ones.

> If I use NAT mode, one of these five interfaces works fine. But now I do
> need the Bridged mode because one of my machine would be a server in my
> experiment.

 You do have a DHCP server correct?  What happens when you do "dhclient
em0"?  Does bridged networking work with a different guest OS as maybe it's
some problem with your host.

Adam Vande More

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