If I comment out the 'wifi-live-or-reset' text in the '/etc/rc.local' file then the Arduino Yun seems do not reboot anymore. However the connection does not work at some point: it works for a while after which it doesn't (see this).
What is the difference between commenting out the 'wifi-live-or-reset' text and running the sketch as said in this post? Should both solutions together completely disable the Wi-Fi connection? And is the proposed sketch to run a "not dangerous" hacking?
The sketch's author even said as a prelude:
ssci:
In some countries, it is prohibited to use WiFi without a government permit (certification). If you live in such country, this memo can help you.
Note: I still didn't run the proposed sketch.
P.S.: Yes, I mean "reliability" (not "liability"). Sorry.