Re: [Qemu-devel] using -net dump with tap networking

[Stefan Hajnoczi]

On Tue, Feb 19, 2013 at 12:37:28PM +1100, Alexey Kardashevskiy wrote:
> On 14/02/13 21:26, Stefan Hajnoczi wrote:
> 
> >>>>Now I want to enable network dump. With the old "-net" syntax I could do
> >>>>that with "-net dump" but I cannot with the new syntax, tried many
> >>>>variants, none works. What would the correct syntax be for the case above?
> 
> The question was about new "-netdev" interface.
> 
> >I would do:
> >
> >qemu-system-ppc64 ...
> >       -net tap,ifname=tap0,script=qemu-ifup.sh
> >       -net nic,model=virtio
> >       -net dump,file=./dump.lan.qemu.virtio
> >
> 
> The answer is about old "-net" interface which I know how to use.
> 
> Does this mean that there is no way to use "dump" with "-netdev tap"?

It is not possible using just -netdev/-device.  The closest you can get
is:

  $ qemu -netdev hubport,hubid=1,id=hubport0 \
         -device virtio-net-pci,netdev=hubport0,... \
         -net tap,vlan=1,... \
         -net dump,vlan=1,...

Stefan