%% You should probably cite draft-ietf-bier-php-11 instead of this revision.
@techreport{ietf-bier-php-04,
    number =    {draft-ietf-bier-php-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-bier-php/04/},
    author =    {Zhaohui (Jeffrey) Zhang},
    title =     {{BIER Penultimate Hop Popping}},
    pagetotal = 7,
    year =      2019,
    month =     oct,
    day =       31,
    abstract =  {Bit Index Explicit Replication (BIER) can be used as provider tunnel for Multicast Virtual Private Network (MVPN) {[}RFC6514{]}, Global Table Multicast {[}RFC7716{]} or Ethernet Virtual Private Network (EVPN) {[}RFC7432{]}. It is possible that not all routers in the provider network support BIER and there are various methods to handle BIER incapable transit routers. However those methods assume the MVPN/ EVPN Provider Edges (PEs) are BIER capable. This document specifies a method to allow BIER incapable routers to act as MVPN/EVPN PEs with BIER as the transport, by having the upstream BIER Forwarding Router (BFR) that is connected directly or indirectly via a tunnel to a BIER incapable PE remove the BIER header and send the payload to the PE.},
}