* User mode network cause other network doesn't work any more
@ 2011-09-02 13:59 Liang Guo
2011-09-02 14:42 ` Jan Kiszka
0 siblings, 1 reply; 4+ messages in thread
From: Liang Guo @ 2011-09-02 13:59 UTC (permalink / raw)
To: kvm
Hi,
When I run kvm with following option:
-net nic -net vde,sock=/var/run/vde2/vde3.ctl
the guest OS's network work as expected, I can ping/ssh from/to host OS,
but when I run kvm with:
-net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl
I can ping from/to host OS in guest OS, but when I try to ssh to host OS in
guest OS, I get 'connection reset' error.
Is this a bug or a expected behaviour ?
I have test qemu 0.14, kvm 0.14 and kvm 0.15, my host os is deban sid,
guest OS is Oracle Enterprise Linux or Debian sid.
Thanks and Regards,
--
Liang Guo
http://bluestone.cublog.cn
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: User mode network cause other network doesn't work any more
2011-09-02 13:59 User mode network cause other network doesn't work any more Liang Guo
@ 2011-09-02 14:42 ` Jan Kiszka
2011-09-02 15:41 ` Liang Guo
0 siblings, 1 reply; 4+ messages in thread
From: Jan Kiszka @ 2011-09-02 14:42 UTC (permalink / raw)
To: Liang Guo; +Cc: kvm
On 2011-09-02 15:59, Liang Guo wrote:
> Hi,
>
> When I run kvm with following option:
>
> -net nic -net vde,sock=/var/run/vde2/vde3.ctl
>
> the guest OS's network work as expected, I can ping/ssh from/to host OS,
> but when I run kvm with:
>
> -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl
That's probably the classic mistake: You create one virtual LAN inside
QEMU this way. Attached to this LAN are all four peers (two NICs, slirp
and VDE).
What you likely want are two backend/frontend pairs:
-net nic,netdev=net1 -net user,id=net1 \
-net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: User mode network cause other network doesn't work any more
2011-09-02 14:42 ` Jan Kiszka
@ 2011-09-02 15:41 ` Liang Guo
2011-09-02 15:42 ` Jan Kiszka
0 siblings, 1 reply; 4+ messages in thread
From: Liang Guo @ 2011-09-02 15:41 UTC (permalink / raw)
To: Jan Kiszka; +Cc: kvm
On Fri, Sep 2, 2011 at 10:42 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> On 2011-09-02 15:59, Liang Guo wrote:
>> Hi,
>>
>> When I run kvm with following option:
>>
>> -net nic -net vde,sock=/var/run/vde2/vde3.ctl
>>
>> the guest OS's network work as expected, I can ping/ssh from/to host OS,
>> but when I run kvm with:
>>
>> -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl
>
> That's probably the classic mistake: You create one virtual LAN inside
> QEMU this way. Attached to this LAN are all four peers (two NICs, slirp
> and VDE).
Thank you pointing this out, I thought '-net nic' and '-net user|tap|vd' was
connected with their sequence.
>
> What you likely want are two backend/frontend pairs:
> -net nic,netdev=net1 -net user,id=net1 \
> -net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2
>
> Jan
I can reach my object with
-netdev user,id=eth0 -device virtio-net-pci,netdev=eth0 \
-netdev vde,sock=/var/run/vde2/vde3.ctl,id=eth1 -device
virtio-net-pci,netdev=eth1
or
-net nic,vlan=1 -net user,vlan=1 \
-net nic,vlan=2 -net vde,sock=/var/run/vde2/vde3.ctl,vlan=2
Thanks,
--
Liang Guo
http://bluestone.cublog.cn
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: User mode network cause other network doesn't work any more
2011-09-02 15:41 ` Liang Guo
@ 2011-09-02 15:42 ` Jan Kiszka
0 siblings, 0 replies; 4+ messages in thread
From: Jan Kiszka @ 2011-09-02 15:42 UTC (permalink / raw)
To: Liang Guo; +Cc: kvm@vger.kernel.org
On 2011-09-02 17:41, Liang Guo wrote:
> On Fri, Sep 2, 2011 at 10:42 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>> On 2011-09-02 15:59, Liang Guo wrote:
>>> Hi,
>>>
>>> When I run kvm with following option:
>>>
>>> -net nic -net vde,sock=/var/run/vde2/vde3.ctl
>>>
>>> the guest OS's network work as expected, I can ping/ssh from/to host OS,
>>> but when I run kvm with:
>>>
>>> -net nic -net user -net nic -net vde,sock=/var/run/vde2/vde3.ctl
>>
>> That's probably the classic mistake: You create one virtual LAN inside
>> QEMU this way. Attached to this LAN are all four peers (two NICs, slirp
>> and VDE).
> Thank you pointing this out, I thought '-net nic' and '-net user|tap|vd' was
> connected with their sequence.
>
>>
>> What you likely want are two backend/frontend pairs:
>> -net nic,netdev=net1 -net user,id=net1 \
>> -net nic,netdev=net2 -net vde,sock=/var/run/vde2/vde3.ctl,id=net2
>>
>> Jan
> I can reach my object with
>
> -netdev user,id=eth0 -device virtio-net-pci,netdev=eth0 \
> -netdev vde,sock=/var/run/vde2/vde3.ctl,id=eth1 -device
> virtio-net-pci,netdev=eth1
>
> or
>
> -net nic,vlan=1 -net user,vlan=1 \
> -net nic,vlan=2 -net vde,sock=/var/run/vde2/vde3.ctl,vlan=2
Err, yeah, I also confused the syntax. :)
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-09-02 13:59 User mode network cause other network doesn't work any more Liang Guo
2011-09-02 14:42 ` Jan Kiszka
2011-09-02 15:41 ` Liang Guo
2011-09-02 15:42 ` Jan Kiszka
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