ZBT-2 Matter Thread Ikea Losing My Mind (lemmy.world)

submitted 3 weeks ago by Squizzy@lemmy.world to c/homeassistant@lemmy.world

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I got the ZBT-2 and there is very little setup or instruction involved.

Plugged in its one and only cable to my pi5. It installed open border thread integration and matter integration.

It flashes blue seemingly at random.

I cannot get any of the IKEA Myggbett, Bilresa or whatever the sockets are called to connect.

I am sat at my ZBT-2, connected to Pi via USB C. Pi is on LAN. I am on wifi.

I get one of two failures

1 unable to connect, check device, reset, check pairing mode etc.

2 setup requires an open border thread controller and then I check and the integration is bugging out.

Please tell me where I am being an idiot

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[-] ericdavidmorris@sh.itjust.works 3 points 3 weeks ago

I ran into very similar problems with my ZBT-2 set to thread and HA Docker container on a mini PC. Turns out I had somehow disabled IPv6 on the mini PC during an update, causing device to HA pairing to fail and for the antenna to keep flashing blue. I would quadruple check that IPv6 is working everywhere it is supposed to be. I thought I had it enabled and was using this all before properly, which is why I never thought to double check until much later down the line.

With these local setups on varying hardware it could be 1001 different things, but IPv6 networking was the issue in my case.

this post was submitted on 26 Aug 2026

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