Re: [gentoo-user] Virtualbox - Bridged networking not working with broadcom-sta driver

[Tommy Bongaerts]

On Mon, Jul 16, 2012 at 09:42:54AM -0400, Michael Mol wrote:
> On Mon, Jul 16, 2012 at 8:45 AM, Tommy Bongaerts
> <tommy.bongaerts@×××××.com> wrote:
> > Hi,
> >
> > I'm running Gentoo on an Acer Travelmate 7750 laptop. This
> > particular laptop has a Broadcom wireless NIC that only works with
> > the proprietary Broadcom wl driver as provided by the broadcom-sta
> > ebuild.
> >
> > Wireless by itself works perfectly fine, but when I use virtualbox
> > with the virtual NIC bridged to my wlan0 interface, networking in
> > the guest OS doesn't work properly.
> >
> > I have made the following observations:
> >
> > * when the guest OS is configured to use DHCP it doesn't get an IP
> >   from my DHCP server, but get an autoconfig IP instead
> > * however, I can see the DHCP requests towards my DHCP server in
> >   Gentoo when monitoring the wlan0 interface with
> >     # tcpdump -i wlan0
> > * when I configure a static IP on the guest OS, I cannot ping from the
> >   guest to the Gentoo host or my default gateway, but pinging from the
> >   Gentoo host or my gateway to the guest OS works fine
> >
> > I manage my wireless NIC through /etc/conf.d/net, using
> > wpa_supplicant with the wext driver. I also tried using
> > networkmanager, but that gave the exact same result.
> >
> > Under Ubuntu 12.04 the network bridge between the vbox NIC and the
> > wireless NIC works fine. This is also with the proprietary wl
> > driver, same version and all.
> >
> > Anyone an idea what might be wrong with my setup?
>
> Just guesses:
>
> 1) ebroute rules blocking packets?
> 2) I've heard before that wireless bridging has issues. I can't
> explain the discrepancy between your experience on Ubuntu 12.04 and
> Gentoo.
>
> What kernel sources package are you using on Gentoo? Which kernel
> version are you using on Gentoo and on Ubuntu?

I have no packet filtering enable on this system at all, so that's not
it.

I have also heard of the bridging issues with wireless interfaces, but
since it works with Ubuntu 12.04 using the same driver I'm pretty sure
this is a config issue.

On Gentoo I'm using gentoo-sources 3.3.8 and 3.4.4, both having the
same issue. The kernel in Ubuntu 12.04 is 3.2.0 I think.

-- 
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