Hello all,

Wasted few hours of my time on this but just can not get it right. Using more and more Shelly devices in house and to setup I use their application on my phone. It uses CoAP multicast protocol on IP 224.0.1.187 and port 5683 to communicate in network, receive commands and send status. I have Bridge-LAN and three VLAN on it. Shelly devices are inside VLAN-IoT with network 10.0.107.0/24 while the phone is on Bridge-LAN directly with network 192.168.28.0/24.

Proper way to handle this is by my opinion IGMP Proxy. I can see the multicast traffic from Shelly devices inside IGMP-Proxy with Bridge-LAN as downstream and VLAN-IoT as upstream. But phone still does not receive this messages. If I connect my phone to IoT WiFi where it gets IP 10.0.107.X everything works. But I do not wish to connect on phone to that network.







I am sure I am missing something, just can not figure out what. Any suggestions are more then welcomed.

Thank you.

Anyone has any idea where else to look or where exactly should I sniff the traffic?

You should be happy that at least 1 Shelly connects.for me NONE of my SHELLIES connect to wifi of MikroTik! NONE. And crappy MikroTik company cna not solve this 14 years old problem.

...my way of using shelly devices is to flash them with tasmota first ... no probs with wifi as well, afterwards....but I am using my own "cloud" to integrate them.