%% You should probably cite draft-ietf-6man-overlap-fragment instead of this I-D.
@techreport{krishnan-6man-overlap-fragment-01,
    number =    {draft-krishnan-6man-overlap-fragment-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-krishnan-6man-overlap-fragment/01/},
    author =    {Suresh Krishnan},
    title =     {{Issues with overlapping IPv6 fragments}},
    pagetotal = 7,
    year =      2008,
    month =     jul,
    day =       14,
    abstract =  {The fragmentation and reassembly algorithm specified in the base IPv6 specification allows fragments to overlap. This document demonstrates the security issues with allowing overlapping fragments and updates the IPv6 specification to explicitly forbid overlapping fragments.},
}