%% You should probably cite draft-ietf-lsr-igp-ureach-prefix-announce instead of this I-D.
@techreport{ppsenak-lsr-igp-ureach-prefix-announce-00,
    number =    {draft-ppsenak-lsr-igp-ureach-prefix-announce-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ppsenak-lsr-igp-ureach-prefix-announce/00/},
    author =    {Peter Psenak and Clarence Filsfils and Stephane Litkowski and Daniel Voyer and Amit Dhamija},
    title =     {{IGP Unreachable Prefix Announcement}},
    pagetotal = 8,
    year =      2022,
    month =     mar,
    day =       25,
    abstract =  {In the presence of summarization, there is a need to signal loss of reachability to an individual prefix covered by the summary in order to enable fast convergence away from paths to the node which owns the prefix which is no longer reachable. This document describes how to use existing protocol mechanisms in IS-IS and OSPF to advertise such prefix reachability loss.},
}