[atlas] paris traceroute output

Hello all!

I'm struggling  to understand how is the number of paris variations reflected in the merasurement output.

If I run paris-traceroute on my machine, the output of a single hop looks something like this:
6  P(16, 16) HOSTNAME (IP):0,1,2,3,4,9,10  4.534/6.072/15.130/2.957 ms  HOSTNAME (IP):5,6,7,8  7.641/10.282/13.119/1.965 ms 

What I'm reffering to is this part: (IP):0,1,2,3,4,9,10, which says which probe packets  'visited' this particular router. I don't understand, how is this reflected in the measurement output. I have never encountered situaton in which 'from' fields within one hop would differ. This would suggest that no load balancing has been encountered, but that seems unlikely to me.

Thanks for any replies, 
Radim

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