%% You should probably cite draft-ietf-tls-esni-18 instead of this revision.
@techreport{ietf-tls-esni-09,
    number =    {draft-ietf-tls-esni-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-tls-esni/09/},
    author =    {Eric Rescorla and Kazuho Oku and Nick Sullivan and Christopher A. Wood},
    title =     {{TLS Encrypted Client Hello}},
    pagetotal = 40,
    year =      2020,
    month =     dec,
    day =       16,
    abstract =  {This document describes a mechanism in Transport Layer Security (TLS) for encrypting a ClientHello message under a server public key.},
}