%% You should probably cite rfc8931 instead of this I-D.
@techreport{ietf-6lo-fragment-recovery-19,
    number =    {draft-ietf-6lo-fragment-recovery-19},
    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-6lo-fragment-recovery/19/},
    author =    {Pascal Thubert},
    title =     {{6LoWPAN Selective Fragment Recovery}},
    pagetotal = 31,
    year =      2020,
    month =     mar,
    day =       20,
    abstract =  {This draft updates RFC 4944 with a protocol to forward individual fragments across a route-over mesh and recover them end-to-end, with congestion control capabilities to protect the network.},
}