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by datastoat 1335 days ago
Suppose the sender has a single interface, and it's the receiver that has multiple interfaces. With MPTCP, the sender will learn that there are multiple paths available, and it'll balance its load adaptively over those paths.

I don't know enough about bonded interfaces, but I don't see how they'd help in this scenario. This scenario is natural with mobile devices, which is probably why Apple uses MPTCP.