I am having a hell of a time getting this UDP stream to get ingested. If I publish as rtmp, it works fine, but a udp URI just doesn't work

1) I create the stream:
ffmpeg -re -i "myclip.mp4" -c:v copy -c:a copy -vcodec h264 -f mpegts udp:wowza-server-address:10000
2) I turn on the stream file, which contains:
3) I wait for something to happen...

Somehow, my stream isn't hitting the .stream file, which claims to be "active" but I can tell from monitoring that nothing is coming in.

Any ideas?