I've got an IKEA hub connected to a few Trådfri lights which I've then added to Home Assistant on a Raspberry Pi and set up a load of automations. I moved the hub and the RPi around my room and now Home Assistant can't control any of the lights, it's just reporting Failed setup, will retry. The IKEA hub can still control the lights fine.
Any idea if there's a quick fix or do I need to bite the bullet, delete the config and set everything up again from scratch?
Can you please confirm if you setup a static ip on the hub? It may be that as you powered it off and then on, it got a new ip from your router and home assistant doesn’t find where it expects it.
You were correct, though I couldn't find a way to update HA with the new IP. Ended up just re-configuring the Ikea integration, weirdly it's forgotten half my bulbs.
I’d suggest integrating pihole in your home lan and have it do dhcp so you can reserve IPs to MAC address/devices with the added bonus of not having ads on your LAN :)