%% You should probably cite rfc9013 instead of this I-D.
@techreport{ietf-ospf-encapsulation-cap-01,
    number =    {draft-ietf-ospf-encapsulation-cap-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-ietf-ospf-encapsulation-cap/01/},
    author =    {Xiaohu Xu and Bruno Decraene and Robert Raszuk and Uma Chunduri and Luis M. Contreras and Luay Jalil},
    title =     {{Advertising Tunnelling Capability in OSPF}},
    pagetotal = 11,
    year =      2016,
    month =     oct,
    day =       13,
    abstract =  {Some networks use tunnels for a variety of reasons. A large variety of tunnel types are defined and the ingress needs to select a type of tunnel which is supported by the egress. This document defines how to advertise egress tunnel capabilities in OSPF Router Information.},
}