This is different, it worked for netinstall, but continued to only boot to ethernet after netinstalling with no fallback to nand. This is also present in ROS 6.47.10 as well as being available in the current v7.1RC4 release. I don’t think this option is related to http://forum.mikrotik.com/t/please-mikrotik-made-netinstall-version-for-docker/151803/1
edit: added picture
