%% You should probably cite rfc7383 instead of this I-D.
@techreport{ietf-ipsecme-ikev2-fragmentation-02,
    number =    {draft-ietf-ipsecme-ikev2-fragmentation-02},
    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-ipsecme-ikev2-fragmentation/02/},
    author =    {Valery Smyslov},
    title =     {{IKEv2 Fragmentation}},
    pagetotal = 20,
    year =      2013,
    month =     sep,
    day =       9,
    abstract =  {This document describes the way to avoid IP fragmentation of large IKEv2 messages. This allows IKEv2 messages to traverse network devices that don't allow IP fragments to pass through.},
}