Constant cpu activity by mwan3

Hello,
I noticed that there is constant CPU activity by mwan3rtmon ipv6 and and i don't really understand why.


I did set ping interval to 1 hour to rule out the pinging does cause load.
But now I'm puzzled what else mwan3 is doing which requires constant activity by mwan3rtmon ipv6?
Thanks for help

nobody a idea what happens there?