%% You should probably cite rfc8364 instead of this I-D.
@techreport{ietf-pim-source-discovery-bsr-04,
    number =    {draft-ietf-pim-source-discovery-bsr-04},
    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-pim-source-discovery-bsr/04/},
    author =    {IJsbrand Wijnands and Stig Venaas and Michael Brig and Anders Jonasson},
    title =     {{PIM flooding mechanism and source discovery}},
    pagetotal = 13,
    year =      2016,
    month =     mar,
    day =       17,
    abstract =  {PIM Sparse-Mode uses a Rendezvous Point and shared trees to forward multicast packets from new sources. Once last hop routers receive packets from a new source, they may join the Shortest Path Tree for the source for optimal forwarding. This draft defines a new protcol that provides a way to support PIM Sparse Mode (SM) without the need for PIM registers, RPs or shared trees. Multicast source information is flooded throughout the multicast domain using a new generic PIM flooding mechanism. This allows last hop routers to learn about new sources without receiving initial data packets.},
}