Hi, I’ve recently installed HA OS on a Raspberry Pi4 and set up a reverse proxy via Caddy. I can now access HA both remotely and when I’m connected to my home wifi. Problem is:
When I’m connected to my home wifi, I can access HA only when the device I’m using (usually my smartphone) is connected to 5Ghz wifi. When using the 2.4Ghz wifi I get “unable to connect” when I trying to access HA.
My modem has 2 wifis (2.4Ghz and 5Ghz) with the same SSID and band steering enabled.
The Raspberry is connected via wifi, since I don’t have physical access to the modem.
The modem is DVA-5592.
As a temporary workaround I set up the modem so that my smartphone is forced to connect to the 5Ghz wifi… But I’d like to understand why this is happening…
Nevermind, I found the issue was my router. It is a DVA-5592, it has hairpinning capabilities but the function is buggy and also tends to assign the same local IP to devices connected on the same wifi. After posting the first message, I rebooted the PI and I wasn’t able to access HA neither with duckdns nor with local IP address. I reinstalled HA from scratch assigning static IPs to all my devices and now everything is working (regardless of 5Ghz or 2.4Ghz), except that if reboot the PI I have to disable/reenable my portforwarding rules from the router config page or it won’t work. I guess one need another router to make HA work reliably…