Thanks @PhilipDAth , this worked for me when configuring a private router with PROXIMUS Belgian ISP for the configuration: Fiber line-> Internet Box -> Step 3. Establish WAN connection on your own router through IPoE session. Details here: https://www.proximus.be/support/en/id_sfaqr_router_install/personal/support/internet/internet-at-home/advanced-settings/configure-your-private-router-as-a-wireless-router.html
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