[$] Not so quickly extending QUIC

QUIC is a UDP-based transport protocol that forms the foundation ofHTTP/3.It was initially developed at Google in 2012, and became anIETF standard in2021. Work on the protocol did not stop with its standardization, however. TheQUIC Working Grouppublished several follow-up standards. Now, it is working onfour more extensions to QUIC intended to patch over various shortcomings in thecurrent protocol - although progress has not been quick.