Hi!
I have installed Home Assistant and I am very pleased. I was able get HomeKit up and running, but recently got a mesh network. I will still have my iot-devices on the old network, and everything is still working except the ios Home app and Siri.
I have tried port forwarding 51827-> 51827 (with all external hosts and the ip of the raspberry pi as the internal one (on the iot router) over TCP) and 5353-> router of home assistant:5353 over UDP.
I have also tried disabeling my firewall, but this did also not work. Is there any way of getting homekit to work with the ios device connected to a different router than home assistant?
Ps: It seems like the router that my main devices is on is able to ping and connect to the iot network without any problem, (eg. can ssh to the pi using the lan ip)
Sorry for the long text, I am pretty new to this. Hope that I will be able to contribute in the future! 