It turns out that I have three listeners on my
Raspi driven Icecast server, two of whom are campers:
My bandwidth upstream of 1Gb/sec isn't affected by this. I wonder why these two ISP's campers are doing this, however. Are they perhaps offering a service to their users?
For 216.167.221.43 we have
this, and for 71.31.114.32 we have
this.
The same Chaska, MN ISP shows up on my Icecast server as well.