[ovs-discuss] Unexpected retransmissions

[Abhishek Chanda]

Yes, I am monitoring the interface on the VM and the tap interface on the host.
I have a flow to redirect traffic to my controller and when the
controller sees a HTTP packet, it writes a flow to redirect all
subsequent HTTP packets to a different server. The flow is being
written properly and it gets hit also. But all subsequent packets seem
to be duplicated, one goes to the original server and one to the new
server. This does seem like an issue with Virtuabox. Thanks for the
reply.

Thanks

On Mon, Aug 20, 2012 at 3:10 PM, Jesse Gross <jesse at nicira.com> wrote:
> On Mon, Aug 20, 2012 at 9:56 AM, Abhishek Chanda
> <abhishek.lists at gmail.com> wrote:
>> Hi Jesse,
>>
>> Thanks for the reply.
>> Those are indeed packet duplications. But I do not understand what
>> causes the problem. I don't have a physical network as such, all VMs
>> hosted on Virtualbox connect to OVS through tap interfaces. What can
>> possible cause this?
>
> You're monitoring on the interface in the VM and on the tap interface
> in the host and packets are duplicated in between?  If that's the case
> then you should take a look at VirtualBox because OVS is not involved
> in that path.