On Fri, Jan 17, 2014 at 2:44 AM, Ben Pfaff <b...@nicira.com> wrote:
> On Mon, Dec 09, 2013 at 09:01:57AM +0100, Helmut Schaa wrote:
>> On Sat, Dec 7, 2013 at 6:20 PM, Ben Pfaff <b...@nicira.com> wrote:
>> > On Fri, Dec 06, 2013 at 04:18:42PM +0100, Helmut Schaa wrote:
>> >> When adding a physical port to the main bridge the mac address
>> >> of the bridge is updated. We can do the same for fake bridges by
>> >> copying the mac address of the parent bridge.
>> >>
>> >> There exists only one fake bridge per vlan, hence it is safe
>> >> to copy the mac address of the parent bridge.
>> >>
>> >> Signed-off-by: Helmut Schaa <helmut.sc...@googlemail.com>
>> >
>> > Why do we want to do this?
>>
>> Same reason as why a regular ovs bridge tries to use the mac address of a
>> physical port instead of using a random mac. If the fake bridge is used as 
>> local
>> access port to the specified VLAN it definitely makes sense to use a 
>> "physical
>> MAC" if any is suitable for use to not confuse other network participants 
>> with a
>> random MAC (DHCP server for example). Another option would have been to
>> copy the main bridge logic and only consider ports on the same VLAN as the
>> fake bridge for MAC inheritance.
>>
>> Hope this clarifies my intent,
>> Helmut
>
> OK.
>
> After thinking about this for a while, I decided to apply this.

Thanks Ben.

In the meantime I updated my original patch to only consider interfaces
using the same vlan. The main reason was the default mode in VMWare
dropping all frames with a MAC different then the interface MAC :/

The current patch can be found at:
https://github.com/hschaa/openvswitch/commit/5eea0b95388efb72e879ae06c14f4120a9f4cc0a
https://github.com/hschaa/openvswitch/commit/3070df9df04c282efb07475c49712fc07dfc0651

I haven't found time to resubmit that yet and I have a couple of other patches
also waiting for a respin (with some rework).

Helmut
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