[homekit] and still the no response problem

We are now on 4.0.4 and HomeKit is still unusable to me as it was on 2.0.

The error of ‚no response‘ still occur and it looks a lot like that oh Community is not really closer to the source of the problem.
Disabling ipv6 is no real option and in many cases does not solve the problem the long way.
Especially as it indicates a problem with some Java network libraries and as such a more basic problem.

Anyone on the same page as me? Other options? Opinions? I’ve thought on testing HomeAssistent just to bridge that topic - but did not find the energy yet.