I have a Linksys WRT1900ACS router. Just bought a Linksys WRT3200ACM to replace it. I’ve configured the new router exactly the same with same wifi names, …everything. My entire Home Assistant set up works fine and it apparently connects to the MQTT server (on an Ubuntu Linux server) however none of my MQTT devices will connect to the new router.
Plug old router in and no problem.
So I have a Homie Ecoplug that I reset and reconfigured to connect to the new router. It won’t connect. Swap the old router back in and no problem. I’m stumped. Using DDWRT…maybe I found a bug.???