Hardware addresses with access to the producer database.
Building requires either providing a local database or letting the builder download one.
By default a database is provided and used, otherwise there are a couple options.
HWADDR_DATABASE
to a path will use the given path as database.HWADDR_DOWNLOAD
to 1
is going to download it from IEEE
website (this is really slow)HWADDR_DOWNLOAD
to a valid URL is going to download it from there.