Static IP on a Fastgate router

A week ago, I moaned that my Fastgate router kept re-assigning IPs after a power failure, which made my Pi-hole less than wonderful. I could not see how to force the router to assign a specific IP. Many kind people replied with suggestions that, if I’m honest, I did not fully understand at any level. However, I kept digging around in the router settings, and found something odd. An old machine, one I no longer own, seemed to have a specific IP. So I tinkered, and this is the note I wrote to myself at the time. I may have discovered how to configure a static IP in the Router. Under Avanzate, right at the bottom, is “IMPOSTAZIONI LAN SU RETE PRINCIPALE”. In that panel is “Associazioni DHCP”. If you click on Aggiungi Associazioni DHCP, you get a pop-up list of all the devices currently given an IP. Select one, and it gets added to the list. Then save. Does this work? No idea, but I am writing it down now in case I need to refer back. Today, there was a powercut. Just what I needed, and I…