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Receive UDP Multicast

Hello,

I am using docker compose and hypriotos on a raspberry pi running a node container. I would like to receive udp multicast messages send to 239.255.255.250:1982 in local network. My code is working on other machines outside of docker so I think it’s a docker issue.

I already exposed port 1982/udp in the docker file and in the docker-compose file I added “1982:1982” and “239.255.255.250:1982:1982/udp” to ports. I still can’t receive anything. Am I missing something?

My concrete plan is to receive advertisement messages from a yeelight. These messages are documented here

Any help would be nice. Thanks.