> DPI middleboxes are truly terrible. They're incompatible with even basic TCP without any good reason. Thanks to them things like TCP Fast Open are unfortunat

> DPI middleboxes are truly terrible. They're incompatible with even basic TCP without any good reason. Thanks to them things like TCP Fast Open are unfortunately still a rarity. > I wonder if these ISPs use the same vendors as your average "enterprise" network. Most likely, yes. Takes a bit too much effort to handle the bandwith necessary, that everyone would be able to do and sell it as a service.