%% You should probably cite draft-xpbs-pce-topology-filter or draft-xiong-pce-nrp-id instead of this I-D.
@techreport{peng-pce-te-constraints-06,
    number =    {draft-peng-pce-te-constraints-06},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-peng-pce-te-constraints/06/},
    author =    {Shaofu Peng and Quan Xiong and Fengwei Qin and Mike Koldychev and Siva Sivabalan},
    title =     {{PCE TE Constraints}},
    pagetotal = 14,
    year =      2021,
    month =     jul,
    day =       11,
    abstract =  {This document proposes a set of extensions for PCEP to support the TE constraints during path computation, e.g, IGP instance, virtual network, Slice-id, specific application, color template and FA-id etc.},
}