%% You should probably cite rfc4719 instead of this I-D.
@techreport{ietf-l2tpext-pwe3-ethernet-09,
    number =    {draft-ietf-l2tpext-pwe3-ethernet-09},
    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-l2tpext-pwe3-ethernet/09/},
    author =    {Mark Townsley and Rahul Aggarwal and Maria Santos},
    title =     {{Transport of Ethernet Frames over Layer 2 Tunneling Protocol Version 3 (L2TPv3)}},
    pagetotal = 14,
    year =      2006,
    month =     aug,
    day =       25,
    abstract =  {This document describes the transport of Ethernet frames over the Layer 2 Tunneling Protocol, Version 3 (L2TPv3). This includes the transport of Ethernet port-to-port frames as well as the transport of Ethernet VLAN frames. The mechanism described in this document can be used in the creation of Pseudowires to transport Ethernet frames over an IP network. {[}STANDARDS-TRACK{]}},
}