0x0 suggests there’s a problem with the decoder. Or that no viewers have joined the stream yet. What’s the situation on the viewers’ end? Do they just see a gray screen, or are they still trying to join the stream and are stuck there? Have the people watching tried different decoders yet?
This is what a stream info looks like when no one is watching yet. Is it the same for you, or is the “target” at the top already 0x0 for you?
With the next update you will be able to set a custom port range, maybe that helps until the SFU releases (if the problem is p2p related and not encode/decoder specific)