[matttbe]

Note that MPQUIC is still being discussed at the IETF. At the last IETF meeting, more changes have been discussed. Unfortunately, that slows down its adoption. https://lwn.net/Articles/964377/

But both tries to achieve the same goal. Technically, you can have a very similar behaviour. MPTCP is implemented in the Linux kernel, while QUIC is on the userspace side.