Network operators could use a blunt-force defense and block MPTCP packets since they're designated as such in the packet headers, Pearce said, but that will not be viable if many applications use it.
Networks have to support MPTCP in order for applications to utilize it. There are implementations for several operating systems, including Linux, BSD and Android, Pearce said.
Microsoft has not supported it yet for Windows, which could set the pace for how many developers eventually embrace it, she said.
The slide deck for the presentation, which Pearce gave with her colleague Patrick Thomas on Wednesday, is now online.
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