%% You should probably cite rfc1990 instead of this I-D.
@techreport{ietf-pppext-multilink-12,
    number =    {draft-ietf-pppext-multilink-12},
    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-pppext-multilink/12/},
    author =    {David Carr and Thomas Coradetti and Brian Lloyd and Glenn McGregor and Keith L. Sklower},
    title =     {{The PPP Multilink Protocol (MP)}},
    pagetotal = 24,
    year =      1995,
    month =     dec,
    day =       12,
    abstract =  {This document proposes a method for splitting, recombining and sequencing datagrams across multiple logical data links. {[}STANDARDS-TRACK{]}},
}