There is a device on my network that sends out multicast messages to a specific port (9522) and a specific IP address (239.12.255.254). I want to receive these messages in my dockerized Node-Red. But after configuring the UDP IN node no messages are coming in. On a test machine with a regular Node-Red installation the exact same UPD IN node works perfect. How do I have to configure my Docker installation of Node-Red to receive these multicast massages?
This is a common docker question one you will probably have to search or ask on stack overflow or a docker forum.
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