PSA: a mtr showing one host in the middle of the path with loss and then other hosts further down with no loss is NOT proof that there is loss in the middle. It's proof the router in the middle won't answer your pings. You're not getting any loss over the path.
@wxcafe I always link to the NANOG talk by RAS about correctly troubleshooting with traceroute - https://archive.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N47_Sun.pdf
@wxcafe But what if they really want it to be a network problem?