Display of network activity quit working.

I am just finishing up with updating to 4.10.3 if that matters. 
Somewhere before that, the display of my network activity quit working. 
  I think that it might have been exactly when my Ethernet ports were 
assigned new and strange names.  I now have two named:

	enp5s12
	enp0s18

as well as a name:

	sit0

which I am guessing is the loop back.

"Network History" in "System Monitor" indicates that it has 
automatically configured itself to show all three, but it shows nothing 
-- no activity on any of them.  The Plasma Widget has a choice and I 
think that I have the correct one selected but it shows nothing also.

I am especially puzzled as to how the "System Monitor" found these but 
doesn't display them.

-- 
James Tyrer

Linux (mostly) From Scratch
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