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I have been tasked with ensuring that a prospective network setup is possible and feasible. Specifically, we would like to use docker as a containerization solution, but the process we are sticking inside it will need to send UDP multicast. So I am trying to verify that I can set the network up in some way such that the UDP multicast sent from inside the container will actually reach the network outside the host.
I have had very little luck so far. I'm running a test setup on my desktop - I have a VirtualBox VM and the host network between host and virtual machine simulates the network (I can successfully send UDP multicast from the VM to the host). Then *within* the VM, I would like to create a docker container that sends UDP multicast and see it on the host PC.
I found a lot of slightly-outdated information suggesting that docker doesn't do UDP (it does now). I found more info suggesting a technique to use pipework to connect the container's eth1 to the VM's eth1, but to no avail.
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