./udpxy -a lan0 -p 4022 -m lan1 -c 150 -B -M 60
try to use it with this command, "protect" port :4022 for internal usage.
Also can use "
Tomcast"
to restream it to your clients if your structure is IGMP capable.
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If not secret for what you use
netplan for?
From
https://netplan.io/ I see it's some semi routing option in OS.
if you try to use it as border router and re-streamer its not so good idea.