%% You should probably cite rfc5501 instead of this I-D.
@techreport{ietf-l2vpn-vpls-mcast-reqts-07,
    number =    {draft-ietf-l2vpn-vpls-mcast-reqts-07},
    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-l2vpn-vpls-mcast-reqts/07/},
    author =    {Yetik Serbest and Yuichiro Wada and Luyuan Fang and Thomas Morin and Yuji Kamite},
    title =     {{Requirements for Multicast Support in Virtual Private LAN Services}},
    pagetotal = 31,
    year =      2009,
    month =     jan,
    day =       14,
    abstract =  {This document provides functional requirements for network solutions that support multicast over Virtual Private LAN Service (VPLS). It specifies requirements both from the end user and service provider standpoints. It is intended that potential solutions will use these requirements as guidelines. This memo provides information for the Internet community.},
}