You should do mac clone.

Connect your Lenevo to the Mango router, go the admin panel->more settings->mac clone. Choose the clone mac

Pls note for Mango, in 3.203 firmware there is a bug that mac clone does not work in repeater mode. This has been fixed and you can try this snapshot firmware. GL.iNet download center

I just tried and macclone works on this firmware.

2 Likes