%% You should probably cite draft-ietf-core-dns-over-coap instead of this I-D.
@techreport{lenders-dns-over-coap-02,
    number =    {draft-lenders-dns-over-coap-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-lenders-dns-over-coap/02/},
    author =    {Martine Sophie Lenders and Christian Amsüss and Cenk Gündoğan and Thomas C. Schmidt and Matthias Wählisch},
    title =     {{DNS Queries over CoAP (DoC)}},
    pagetotal = 13,
    year =      2021,
    month =     oct,
    day =       25,
    abstract =  {This document defines a protocol for sending DNS messages over the Constrained Application Protocol (CoAP). These CoAP messages are protected by DTLS-Secured CoAP (CoAPS) or Object Security for Constrained RESTful Environments (OSCORE) to provide encrypted DNS message exchange for constrained devices in the Internet of Things (IoT).},
}