No, not explicit congestion control, the amount of entropy in what internet plan a user has (outside of a lossy CDMA-type connection) is fairly low. The sender

No, not explicit congestion control, the amount of entropy in what internet plan a user has (outside of a lossy CDMA-type connection) is fairly low. The sender should set window sizes, not assume ISPs should set an IP-level flag. Probes for speeds should be less aggressive since it isn’t unknown how fast a typical connection is. Not, link, but subnet, since dynamic IPs exist. IP addresses are usually assigned geographically.