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UDP Broadcasts to a docker

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I have setup node-red as a docker and all with working good apart from the UDP packets I am trying to capture are not visible.  The same flow works perfectly on a RPI running Node-Red so it looks like for what ever reason the UPD broadcasts are not getting forwarded to the docker, is there anything special I have to do to enable this?  I did try adding the port 22600 but still no luck.  I do know the  broadcasts are always to & port 22600.

Any help would be appriciated.

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Posted (edited)

Running the container with host networking works. Not sure if it works if you set an IP for the container on a custom bridge.


If I'm thinking about it, I read UDP as multicast UDP. If it's just normal UDP, you may the correct port and set it to udp. The default is TCP.

Edited by saarg

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