Sorry for dropping the list, I will take care next time.

For you suggestion, did you mean to connect the eth0 to a trunk port 
of physical switch ?

In addition, I got below command from google but still have no chance 
to try it. Is it possible to solve my problem?
# ebtables -t broute -A BROUTING -i eth0 -p 802_1Q -j DROP

Thanks
Feng


在 2013-3-22,上午7:15,"Ben Pfaff" <b...@nicira.com> 写道:

> Please don't drop the list.
> 
> You could use a "native VLAN" trunk port.  I suspect it won't do what
> you want though.
> 
> On Fri, Mar 22, 2013 at 07:07:23AM +0800, ????????? wrote:
>> Thanks Ben!
>> 
>> Then, is it possible to configure the openvswitch to remove the vlan tag 
>> when the packets go to external network?
>> 
>> ?? 2013-3-22??????1:31??"Ben Pfaff" <b...@nicira.com> ??????
>> 
>>> On Thu, Mar 21, 2013 at 09:14:16PM +0800, ?????? wrote:
>>>> Hello all,My problem is that after configuring the VLAN in VM, it can't 
>>>> connect to external network.Here is my test environment:     . One 
>>>> physical machine installed with ubuntu 12.04, which has one network device 
>>>> (eth0) and is able to access internet.     . openvswitch 1.9.0.     . Four 
>>>> VMs (VM1, VM2, VM3, VM4).     . vnet1, vnet2, vnet3, vnet4 and eth0 are 
>>>> all added to bridge ovsbr.
>>>> Before setting vlan, all VMs and host system can connect to external 
>>>> network, meanwhile VMs can ping each other. But after I configuring VM1 
>>>> and VM2 with VLAN 10, it failed to connect to external network, though it 
>>>> can ping each other. I have struggled with issue a few days and didn't 
>>>> find useful tips in ovs FAQ and google. Any help is appreciated !
>>> 
>>> The Internet is probably not reachable over that VLAN on your network.
>>> That is a question of how your exteral network is set up, not an
>>> aspect of Open vSwitch.
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