"QMux version 1 provides, over bi-directional streams such as TLS, the same set of stream and datagram operations that applications rely upon in QUIC version 1"

https://datatracker.ietf.org/doc/draft-opik-quic-qmux/

QMux

This document specifies QMux version 1. QMux version 1 provides, over bi-directional streams such as TLS, the same set of stream and datagram operations that applications rely upon in QUIC version 1. Discussion Venues This note is to be removed before publishing as an RFC. Discussion of this document takes place on the QUIC Working Group mailing list ([email protected]), which is archived at https://mailarchive.ietf.org/arch/browse/quic/. Source for this draft and an issue tracker can be found at https://github.com/kazuho/draft-opik-quic-qmux.

IETF Datatracker
@bagder Ah! Finally everything is sent IN ORDER again!
/cc @SimmerVigor
@icing @bagder it's always sent in order