%% You should probably cite rfc5561 instead of this I-D.
@techreport{ietf-mpls-ldp-capabilities-04,
    number =    {draft-ietf-mpls-ldp-capabilities-04},
    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-mpls-ldp-capabilities/04/},
    author =    {Bob Thomas and Jean-Louis Le Roux and Shivani Aggarwal and Rahul Aggarwal and Syed Kamran Raza},
    title =     {{LDP Capabilities}},
    pagetotal = 12,
    year =      2009,
    month =     apr,
    day =       23,
    abstract =  {A number of enhancements to the Label Distribution Protocol (LDP) have been proposed. Some have been implemented, and some are advancing toward standardization. It is likely that additional enhancements will be proposed in the future. This document defines a mechanism for advertising LDP enhancements at session initialization time, as well as a mechanism to enable and disable enhancements after LDP session establishment. {[}STANDARDS-TRACK{]}},
}