Stefan Hajnoczi <stefa...@redhat.com> writes:

> 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,...

Care to explain briefly how hubport works, and how it's connected to the
legacy "vlan" feature?

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