#homeassistant users, what's the secret to getting new Matter devices to pair? Because it's a parade of "pairing failed" messages for me across several devices.

I have a ZBT-1 attached to my HA Green, OTBR running, and a bunch of other Matter devices that just appeared in HA that work.

Looking around, there is a bunch of very confusing stuff about IPv6 networking (this kind of nonsense is why HA remains a hobbyist platform) and not one paragraph of "here's the straightforward method to follow" advice, including in the official docs.

Halp!