Re: [Qemu-discuss] How to use tap for qemu guest network?

[Shiyao Ma]

Hi Aleksei,

I did the following,

sudo ip link add dev bridge0 type bridge

sudo ip link set bridge0 up

# after the above commands, when doing a `ip link show', the bridge0 is in
state UNKNOWN.



I then run,
sudo kvm -m 256 eva.qcow2 -curses -vga virtio -device
virtio-net,netdev=internet -netdev bridge,br=bridge0,id=internet,
helper=/usr/lib/qemu/qemu-bridge-helper

After login into the sytem, I run:
ip link show
I got:
                                root@eva:/home/introom# ip addr
                                                                1: lo:
<LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group defaul
                                                                t

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
                                                                    inet
127.0.0.1/8 scope host lo

 valid_lft forever preferred_lft forever
                                                                    inet6
::1/128 scope host

 valid_lft forever preferred_lft forever
                                                                2: eth0:
<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP gr
                                                                oup default
qlen 1000

link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
                                                                    inet
10.0.2.15/24 brd 10.0.2.255 scope global eth0

 valid_lft forever preferred_lft forever
                                                                    inet6
fec0::5054:ff:fe12:3456/64 scope site mngtmpaddr dynamic

 valid_lft 86343sec preferred_lft 14343sec
                                                                    inet6
fe80::5054:ff:fe12:3456/64 scope link

 valid_lft forever preferred_lft forever



The above is all I got.

What additional step should I do?
For example, to achieve the goal as,  ping between the guest and the host.

Thanks.




On Thu, Dec 15, 2016 at 9:10 PM, Aleksei <alex3...@zoho.com> wrote:

> This works for me (you have to set up the bridge "bridge0" on the host
> side):
>
> -device virtio-net,netdev=internet \
> -netdev bridge,br=bridge0,id=internet,helper=/usr/lib/qemu/qemu-
> bridge-helper
>
> *--Regards, Aleksei*
>
> ------------------------------
>
> *From:* Shiyao Ma
> *Sent:* Thursday, December 15, 2016 3:34PM
> *To:* Qemu-discuss
> *Subject:* [Qemu-discuss] How to use tap for qemu guest network?
>
> Hi,
>
> I'd like to use a tap for the network between the host and the guest.
>
> There are some materials on the internet, but none working for me.
>
> Anybody successful setting up the tap based network?
>
> What commands/setup do you use?
>
> Thanks.
>
>
>
>


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