Full Thread home coverage and DNS resolve of the Home Assistant server

[fgervais]

Last summer I deployed 2 instances of ot-br-posix border router to get full Thread home coverage but the network was pretty unstable because the 2 BRs would oscillate between 1 and 2 partitions.

I brought this up here and was told that switching to using TREL would solve that issue. (#7862).

I did and I'm here to report that it works really well. I keep checking the MLE counter and there is no oscillations anymore.

In case it helps others, here is the topology:

The Thread SEDs can also resolve the MQTT server address through DNS so I don't have to hardcode the server address anymore. Nothing special here but since all that technology is still quite new, I'm glad to report that it works.

[abtink]

Thanks you @fgervais. Happy to hear this. :)

[jwhui]

+1 thanks for testing and reporting back, @fgervais . This is exactly the scenario we wanted to address when developing TREL!