en: link_aggregation: Specify the port number of the controller
en: link_aggregation: Specify the port number of the controller

Signed-off-by: “Shinpei Muraoka <97ebe137699772210ccc3c6a299cdfd07ff427b2@gmail.com”>

iwaseyusuke/ryu-book,iwaseyusuke/ryu-book,osrg/ryu-book,osrg/ryu-book