netdev - Re: [PATCH 00/11] Add basic VLAN support to bridges

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Date:	Wed, 12 Dec 2012 12:05:41 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Vlad Yasevich <vyasevic@...hat.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net, mst@...hat.com,
	john.r.fastabend@...el.com
Subject: Re: [PATCH 00/11] Add basic VLAN support to bridges

On Wed, 12 Dec 2012 15:01:06 -0500
Vlad Yasevich <vyasevic@...hat.com> wrote:

> This series of patches provides an ability to add VLANs to the bridge
> ports.  This is similar to what can be found in most switches.  The bridge
> port may have any number of VLANs added to it including vlan 0 priority tagged 
> traffic.  When vlans are added to the port, only traffic tagged with particular
> vlan will forwarded over this port.  Additionally, vlan ids are added to FDB
> entries and become part of the lookup.  This way we correctly identify the FDB
> entry.
> 
> A single vlan may also be designated as untagged.  Any untagged traffic
> recieved by the port will be assigned to this vlan.  Any traffic exiting
> the port with a VID matching the untagged vlan will exit untagged (the
> bridge will strip the vlan header).  This is similar to "Native Vlan" support
> available in most switches.
> 
> The default behavior ofthe bridge is unchanged if no vlans have been
> configured.

My concern is that all older configurations must continue to work.
Is it still unchanged if a vlan device is added to the bridge, or vlan is
configured on an ethernet that has been added to the bridge?
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