Hi,

when I am using the laptop a long time, several hours, also in cases 
when I take a brake of some minutes
the internet connection freezes
and there is no way to get it back,
even restarting icedove or icecat.
The only possibility is to restart the laptop.

Is there a command to restart the internet connection,
so that I don’t have to restart the laptop?
-- 
Kind regards

Gottfried