%% You should probably cite rfc8657 instead of this I-D.
@techreport{ietf-acme-caa-09,
    number =    {draft-ietf-acme-caa-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-acme-caa/09/},
    author =    {Hugo Landau},
    title =     {{CAA Record Extensions for Account URI and ACME Method Binding}},
    pagetotal = 11,
    year =      2019,
    month =     jun,
    day =       16,
    abstract =  {The Certification Authority Authorization (CAA) DNS record allows a domain to communicate issuance policy to Certification Authorities (CAs), but only allows a domain to define policy with CA-level granularity. However, the CAA specification also provides facilities for extension to admit more granular, CA-specific policy. This specification defines two such parameters, one allowing specific accounts of a CA to be identified by URI and one allowing specific methods of domain control validation as defined by the ACME protocol to be required.},
}