Arduino UNO ethernet shield2 + Multicasting

hello wonder if there tutorial(s) or can explain me how multicast in arduino ide.

i send 1 command ex. "hello" multiple computers same python script , let them receive message "hello".

is there can me on 1 ?

thanks in advanced

...r

i don't have lot of experience myself seems must use udp broadcast message on local network. tcp/ip messages can ever go 1 address.

udp doesn't propagate outside local network, if computers on different networks or internet need more work.

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