%% You should probably cite rfc7886 instead of this I-D.
@techreport{ietf-l2tpext-sbfd-discriminator-05,
    number =    {draft-ietf-l2tpext-sbfd-discriminator-05},
    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-l2tpext-sbfd-discriminator/05/},
    author =    {Vengada Prasad Govindan and Carlos Pignataro},
    title =     {{Advertising Seamless Bidirectional Forwarding Detection (S-BFD) Discriminators in the Layer Two Tunneling Protocol Version 3 (L2TPv3)}},
    pagetotal = 6,
    year =      2016,
    month =     apr,
    day =       15,
    abstract =  {This document defines a new Attribute-Value Pair (AVP) that allows L2TP Control Connection Endpoints (LCCEs) to advertise one or more Seamless Bidirectional Forwarding Detection (S-BFD) Discriminator values using the Layer Two Tunneling Protocol version 3 (L2TPv3).},
}