Removing the ISP (Proximus) modem for a FTTH connection
After a very painful installation process to get Proximus Ultra Fiber (8.5Gbps down/1.5Gbps up) I decided to remove the Proximus modem between my UDM-SE and the ONTP. According to the Proximus documentation, for an FFTH installation this can be done by using VLAN 20 on the WAN port of the UDM-SE. We can configure this by navigating to Settings -> Internet -> Primary (WAN 1). Under advanced, we need to select Manual and check the box next to VLAN ID....