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From: Avi Kivity <avi@redhat.com>
To: Lukas Kolbe <l-lists@einfachkaffee.de>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: tun/tap and Vlans
Date: Tue, 19 May 2009 10:45:18 +0300	[thread overview]
Message-ID: <4A12638E.9060701@redhat.com> (raw)
In-Reply-To: <1242717491.28272.12.camel@larosa>

Lukas Kolbe wrote:
>> Right, I guess you'd see this with a real switch as well?  Maybe have 
>> your guest send a packet out once in a while so the bridge can learn its 
>> MAC address (we do this after migration, for example).
>>     
>
> Does this mean that it is not possible for having each tun device in a
> seperate bridge that serves a seperate Vlan? We have experienced a
> strange problem that we couldn't yet explain. Given this setup:
>
> Guest            Host          
> kvm1 --- eth0 -+- bridge0 --- vlan1 \
>                |                     +-- eth0
> kvm2 -+- eth0 -/                     /
>       \- eth1 --- bridge1 --- vlan2 +
>
> When sending packets through kvm2/eth0, they appear on both bridges and
> also vlans, also when sending packets through kvm2/eth1. When the guest
> has only one interface, the packets only appear on one bridge and one
> vlan as it's supposed to be.
>
> Can this be worked around?
>   

This is strange.  Can you post the command line you used to start kvm2?

-- 
error compiling committee.c: too many arguments to function


  reply	other threads:[~2009-05-19  7:45 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-12  0:28 Network I/O performance Fischer, Anna
2009-05-13  7:23 ` Avi Kivity
2009-05-13 15:56   ` Fischer, Anna
2009-05-17 21:14     ` Avi Kivity
2009-05-19  1:30       ` Herbert Xu
2009-05-19  4:53         ` Avi Kivity
2009-05-19  7:18       ` tun/tap and Vlans (was: Re: Network I/O performance) Lukas Kolbe
2009-05-19  7:45         ` Avi Kivity [this message]
2009-05-19 19:46           ` tun/tap and Vlans Lukas Kolbe
2009-05-20 10:25           ` Fischer, Anna
2009-05-20 10:38             ` Avi Kivity
2009-05-19 21:22       ` Does KVM suffer from ACK-compression as you increase the number of VMs? Andrew de Andrade
2009-05-20 10:15       ` Network I/O performance Fischer, Anna

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