Fix bson header detection.
* Infrastructure for multiple table and group support
* Implement vm_port, table, group in RouteMod
* Message type for rfserver/rfclient flow control (workaround)
* Physical/VLAN attributes for interfaces.
* Only send mapping packets on physical interfaces.
* multitable support
* satellite (small table) support
* flow translator support
* VLAN support
* flow control rfclient/rfserver workaround
* group (infrastructure) support
* fix: order of routing table changes wasn't preserved
* schedule nextop resolution as soon as new route received
* aggressively try to push unresolved routes as new routes
  are received (while maintaining operation order)
* update NoviFlow workaround note.
* NoviFlow needs same priority in table to be efficient.
* Stale reference to route in log message when adding
  an unresolved route (though route is added correctly).
* fix (not actually clearing unresolved routes set when retrying)
* Configurable outstanding unacknowledged RouteMods
* Insanely large netlink buffers.
* Don't use groups (PicOS 2.4 bug).
* Default priority base to 1000 from 10 (Pica8 bug - stops matching ARP)
* Add interface specific ARP flows.
* Increase outstanding flow limit, 5 to 10.
* Fix suppression of duplicate ISL flows.
Don't send mapping packets for mapped ports.
Send resolved gateway details when deleting routes (so that RouteMod translator can allocate groups as required)
Check for netlink setsockopt() failure.
Add support for deferred strip of VLAN header.
Change from INFO to DEBUG/ERR as more appropriate.
Don't try to resolve gateway within netlink receiver thread (can cause netlink socket overruns)
Fix missing actual resolveGateway() call in routing table update worker.