Comment 6 for bug 1742876

Yes this works. Service starts as expected.
On my configuration, /etc/systemd/system/epmd.socket.d/ was not available, so I had to create it.

Now on my system,
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cat /etc/systemd/system/epmd.socket
[Unit]
Description=Erlang Port Mapper Daemon Activation Socket

[Socket]
ListenStream=127.0.0.1:4369
Accept=false

[Install]
WantedBy=sockets.target
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and
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cat /etc/systemd/system/epmd.socket.d/override.conf
[Socket]
ListenStream=MANAGEMENT_IP:4369
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