[mythtv-users] Why is MythTV sending data out to some servers out there?

[A. F. Cano]

I'm noticing that the network interface is sending and receiving data in the
range of 15 to 40 KiB/s while I'm doing nothing internet related.  So I
install ntopng, learn how to use it and it tells me that MythTV is in contact
with some web sites:

L4 Proto	Client				Server
UDP		MythTV on <my host name>	178.62.234.39:21873
UDP		51.255.171.145:18746		MythTV on <my host name>:17759

There are many other lines like this where MythTV is mentioned, mostly UDP
but also some TCP, but these two are the ones with the most data throughput.

The application column says "Unknown" in all cases.

What is going on here?  How can I stop this behavior?  I am only using EIT
for programming info.