Comment by hunter2_

I never got into this aspect of networking, so I truly don't know what I'm talking about and wish someone will correct me, but on some level, IP does indeed have broadcast/multicast capabilities that cause the sender's egress traffic to remain independent of the number of recipients rather than being equal to the sum of recipients' ingress traffic, right? Does this only work downstream of the last router, and therefore has limited usefulness on the internet?