Ports will not work as expected on the RTL931x devices. This comes from a typo in the address. Fixed according to the documentation: https://svanheule.net/realtek/mango/register/mac_force_mode_ctrl Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de> Signed-off-by: Sebastian Gottschall <s.gottschall@dd-wrt.com> Link: https://github.com/openwrt/openwrt/pull/18864 Signed-off-by: Robert Marko <robimarko@gmail.com>