%% You should probably cite rfc8139 instead of this I-D.
@techreport{ietf-trill-rfc6439bis-05,
    number =    {draft-ietf-trill-rfc6439bis-05},
    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-trill-rfc6439bis/05/},
    author =    {Donald E. Eastlake 3rd and Yizhou Li and Mohammed Umair and Ayan Banerjee and fangwei hu},
    title =     {{Transparent Interconnection of Lots of Links (TRILL): Appointed Forwarders}},
    pagetotal = 41,
    year =      2017,
    month =     feb,
    day =       21,
    abstract =  {TRILL (Transparent Interconnection of Lots of Links) supports multi-access LAN (Local Area Network) links where a single link can have multiple end stations and TRILL switches attached. Where multiple TRILL switches are attached to a link, native traffic to and from end stations on that link is handled by a subset of those TRILL switches called "Appointed Forwarders" as originally specified in RFC 6325, with the intent that native traffic in each VLAN be handled by at most one TRILL switch. This document clarifies and updates the Appointed Forwarder mechanism. It updates RFCs 6325 and 7177 and obsoletes RFC 6439.},
}