%% You should probably cite rfc9013 instead of this I-D.
@techreport{ietf-ospf-encapsulation-cap-03,
    number =    {draft-ietf-ospf-encapsulation-cap-03},
    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/03/},
    author =    {Xiaohu Xu and Bruno Decraene and Robert Raszuk and Luis M. Contreras and Luay Jalil},
    title =     {{Advertising Tunneling Capability in OSPF}},
    pagetotal = 12,
    year =      2017,
    month =     may,
    day =       19,
    abstract =  {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 and itself. This document defines how to advertise egress tunnel capabilities in OSPF Router Information Link State Advertisement (LSAs).},
}