Re: Bridging with WLAN interface

[Marcin Michal Jessa <lists%yazzy.org@localhost>]

Sarton O'Brien wrote:
> On Wed, 6 Aug 2008 05:00:13 am Marcin M. Jessa wrote:
>   
> > Hi guys.
> >
> > I've Xen0 set up to bridge traffic out of the DomUs.
> > I've a Windows XP DomU with it's intet device defined like this:
> > vif = [ 'type=ioemu, bridge=bridge0, mac=00:00:00:ff:fe:01' ]
> >
> > Bridge0 interface has two members, the wired (wm0) and wireless (iwn) nics.
> > The Windows DomU gets IP address from a DHCP server.
> > This setup works fine and Windows gets online as long as I connect to 
> > network with the wired interface.
> > But when I connect using the WLAN interface then the Windows host is 
> > unable to ping anything outside.
> > I can ping the IP of my WLAN interface from Windows just fine, and 
> > vice-versa, but I cannot access the rest of my network.
> > And I can of course access my network directly using the WLAN interface 
> > from my Dom0.
> >
> > I also specifically defined my wireless interface in xend-config.sxp: 
> > (network-script 'network-bridge netdev=iwn0')
> >
> > Any idea why this isn't working? This is very strange.
> >
> > I also remember to have the same issue with Linux on the same computer.
> > I had to set up NATing to be able to access my LAN from DomUs.
> > But that was Linux and I didn't expect things to work properly...
> >     
>
> Is the intention to only use the wireless NIC?
>   
This is for two scenarios using wired nic at work and wireless at home.
> Do you get the same problem with a netbsd domu?
>   
No, I use XEN mostly to run Linux and Windows DomUs on NetBSD Dom0 on my 
laptop.
> If it's a limitation of our 802.11 bridge support, like Quentin stated, then I 
> guess you are limited to routing. I don't believe you need to be using NAT. 
> Plenty of people in the past have stated they use a routed setup 
> (xennet->xvif->interface).
>
> I'd imagine there is some better way to predetermine the xvif assignment than 
> by using mac and dhcp but I could be completely wrong?
>
> If no-one responds to the above, I'd be happy to attempt to research a little. 
> Unfortunately I don't have a wireless nic though.
>
> As for linux, I use openwrt (linux 2.4) with custom bridge configurations and 
> broadcom wireless. It seems to be completely functional (from an 802.3 
> perspective).
>   
This may be related to the particular driver I've been using ( Intel 
PRO/Wireless 4965AGN ), I don't know...