Perhaps something's gone wrong due to your bridging setup. Have you adjusted
the Xend network and vif-bridge scripts to do the right thing for your setup?
If not, Xend will be trying its own bridge setup and possibly confusing thins
as a result...
If not, you might want to a) try starting Xend without any preconfigured
bridges to see if that works and then b) adapt the scripts to suit your setup
properly.
HTH,
Mark
On Monday 08 Nov 2004 20:28, Armin Kemper wrote:
> Hi,
>
> I'm new to XEN and trying to migrate from UserMode Linux, because its much
> faster!!!
>
> After having some trouble messing around with devfs (I'm using gentoo...)
> the VMs are booting fine.
>
>
> My current UML Setup looks like this:
>
> Main Machine:
> linux-2.4.22-gentoo (using SKAS patch)
> 2 ethernet interfaces
> eth0 connected to LAN
> eth1 connected to DSL-Modem
>
> The UML-VM has 2 virtual Interfaces
> eth0 and eth1
> apperaing as tap0 and tap1 on the main machine
>
> the vm is connected to the lan via proxy-arp/routing (uml-stadard),
> the tap1 Interface ist bridged to eth1 on the main machine.
>
> The UML-VM is running the rp-pppoe driver on eth1 (tap1)
>
>
>
>
> My XEN 2.0 setup:
> what I tried to do is creating 2 bridges (one for each physical interface)
> on the host, bridging the first VIF to the LAN and the second to the
> DSL-Modem.
>
> when I start the rp-pppoe inside the vm, I can see the PPPoE packets
> appearing on the eth1 Interface (using tcpdump -nei eth1 inside the vm),
> but they never arrive at the corresponding vif on the main machine (using
> tcpdump -nei vif1.1).
>
> The other way, sending PPPoE packets, to the vif1.1 from the main machine
> works. I can see them inside the VM, but the other direction seems to be
> blocked.
>
> If I set an IP-address on the eth1 interface inside the vm, I can see
> IP/ARP packets to, but no PPPoE.
>
> After searching the XEN Mailing lists and XEN Changlogs, I found that there
> has been a change in one of 1.x releases making changes to the handling of
> ethernet packets, but I can't find any similar code in the current release.
> This was in ChangeSet@xxxxxx
>
> Sowhere in the XEN-docs I read that vif Interfaces are transparent, but in
> this case they aren't.
>
>
> So my Question is:
> I this a bug? Otherwise I cannot find anything in the docs about this.
> If this is the right behaviour, where can I change it?
> I havent't found any filtering code neither in the backend nor the frontend
> driver.
>
>
> Best regards,
>
> Armin Kemper
>
>
>
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