%% You should probably cite rfc8077 instead of this I-D.
@techreport{ietf-pals-rfc4447bis-00,
    number =    {draft-ietf-pals-rfc4447bis-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-ietf-pals-rfc4447bis/00/},
    author =    {Luca Martini and Giles Heron},
    title =     {{Pseudowire Setup and Maintenance using the Label Distribution Protocol}},
    pagetotal = 32,
    year =      2015,
    month =     mar,
    day =       10,
    abstract =  {Layer 2 services (such as Frame Relay, Asynchronous Transfer Mode, and Ethernet) can be "emulated" over an MPLS backbone by encapsulating the Layer 2 Protocol Data Units (PDU) and then transmitting them over "pseudowires". It is also possible to use pseudowires to provide low-rate Time Division Multiplexed and Synchronous Optical NETworking circuit emulation over an MPLS-enabled network. This document specifies a protocol for establishing and maintaining the pseudowires, using extensions to the Label Distribution Protocol (LDP). Procedures for encapsulating Layer 2 PDUs are specified in a set of companion documents. This document has been written to address errata in a previous version of this standard.},
}