linux – No udp being received on LAN after sending via ffmpeg

admin

I’m trying to stream a webcam over my LAN with

ffmpeg -s 640x480 -i /dev/video2 \
    -framerate 10 \
    -preset ultrafast -tune zerolatency codec libx264 \
    -f mpegts udp://192.168.1.237:8081

This is all fine when consumed with

ffplay -fflags nobuffer -flags low_delay -framedrop udp://192.168.1.237:8081

on the same box, but when I try to run that same ffplay on another box on my LAN, then, nothing. Any ideas please?
Also, the following as ‘client’ simply hangs:

nc -u 192.168.1.237 8081 | xxd

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