%% You should probably cite rfc4302 instead of this I-D.
@techreport{ietf-ipsec-rfc2402bis-11,
    number =    {draft-ietf-ipsec-rfc2402bis-11},
    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-ipsec-rfc2402bis/11/},
    author =    {Stephen Kent},
    title =     {{IP Authentication Header}},
    pagetotal = 34,
    year =      2005,
    month =     mar,
    day =       21,
    abstract =  {This document describes an updated version of the IP Authentication Header (AH), which is designed to provide authentication services in IPv4 and IPv6. This document obsoletes RFC 2402 (November 1998). {[}STANDARDS-TRACK{]}},
}