For a few months, I had issues with my Wi-Fi network. The 2.4 GHz network would be fine, but the 5 GHz one would suddenly stop working and completely disappear from the available Wi-Fi networks. OpenWRT upgrades also didn’t improve the situation. This was very annoying. After some discussions with a friend, I learned about Dynamic Frequency Selection (DFS). Apparently some channels on the 5 GHz Wi-Fi spectrum are also used by weather and military radars, and those take priority. If such int...