* More extensible wire protocol
Many on-wire structures got TLVs.
- Already implemented: port desc properties, port mod properties,
- port stats properties, table mod properties,
- queue stats, unified property errors, queue desc.
- Remaining required: set-async
+ All required features are now supported.
Remaining optional: table desc, table-status
[EXT-262]
[required for OF1.4+]