Multipath TCP: an overview

Sounds like PMTU discovery has the same enemies: "smart" middleboxes (NAT) and enterprise admins (firewalls).

While I agree that protocol designers should have seen it coming, I still think the larger part of the blame lies with device vendors not implementing existing protocols to the specification and not releasing updates even when those problems are pointed out to them -- basically holding the whole industry hostage because the cost is externalized.

Which brings me to a crazy idea -- perhaps we need an "Acid test of consumer routers" -- following the model of acidtests.org, which pressured several browser vendors to improve on their standards conformance, because every savvy user could easily see how broken their choice was. Has anyone attempted something like this already?