%% You should probably cite rfc8319 instead of this I-D.
@techreport{ietf-6man-maxra-04,
    number =    {draft-ietf-6man-maxra-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-6man-maxra/04/},
    author =    {Suresh Krishnan and Jouni Korhonen and Samita Chakrabarti and Erik Nordmark and Andrew Yourtchenko},
    title =     {{Support for Adjustable Maximum Router Lifetimes per Link}},
    pagetotal = 7,
    year =      2017,
    month =     nov,
    day =       28,
    abstract =  {The IPv6 Neighbor Discovery protocol specifies the maximum time allowed between sending unsolicited multicast Router Advertisements (RAs) from a router interface as well as the maximum router lifetime. It also allows the limits to be overridden by documents that are specific to the link layer. This document allows for overriding these values on a per-link basis. This document specifies updates to the IPv6 Neighbor Discovery Protocol (RFC 4861) to increase the maximum time allowed between sending unsolicited multicast RAs from a router interface as well as to increase the maximum router lifetime.},
}