Re: qemu-xen and bridge (xen 4.11)

[Roman Shaposhnik <roman@xxxxxxxxxx>]

On Mon, Aug 24, 2020 at 11:12 AM Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx> wrote:
>
> Hello,
> with the recent XSA about qemu, I'm trying to switch the NetBSD port from
> qemu-xen-traditional to qemu-xen (in Xen 4.11 for now, I'll look at
> 4.13 later).
> One showstopper is that with qemu-xen, the bridge name is not passed
> any more to the qemu-ifup script. I tried adding a br= option to
> the qemu invocation, but qemu-system-i386 doesn't seem to use it
> (at last the script is still called with only one argument).
> I'm not about to pass to qemu the value of nics[i].script instead of
> libxl_tapif_script(), so that at last per-domain script can be
> specified.
>
> How is this issue dealt with on other OSes ? I can't believe I'm
> the only one with multiple bridges in the dom0 ...

You mean something like?
   
https://github.com/lf-edge/eve/blob/master/pkg/xen-tools/patches-4.14.0/10-bridge-helper-support.patch

Thanks,
Roman.