From: Vlad Yasevich <redacted>
Date: Wed, 12 Dec 2012 15:01:06 -0500

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.

FWIW I've reviewed these changes and I like them a lot.

They resolve a real ambiguity, and using ebtables as a reason these
changes should not be applied amounts to a scarecrow.