%% You should probably cite rfc7557 instead of this I-D.
@techreport{chroboczek-babel-extension-mechanism-01,
    number =    {draft-chroboczek-babel-extension-mechanism-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-chroboczek-babel-extension-mechanism/01/},
    author =    {Juliusz Chroboczek},
    title =     {{Extension Mechanism for the Babel Routing Protocol}},
    pagetotal = 8,
    year =      2014,
    month =     jun,
    day =       30,
    abstract =  {This document defines the encoding of extensions to the Babel routing protocol {[}BABEL{]}.},
}