%% You should probably cite rfc6656 instead of this I-D.
@techreport{ietf-dhc-subnet-alloc-12,
    number =    {draft-ietf-dhc-subnet-alloc-12},
    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-dhc-subnet-alloc/12/},
    author =    {Jay Kumarasamy and Kim Kinnear and Mark Stapp and Richard A. Johnson},
    title =     {{Subnet Allocation Option}},
    pagetotal = 30,
    year =      2011,
    month =     jun,
    day =       3,
    abstract =  {This document defines a new DHCP option which is passed between the DHCP Client and the DHCP Server to request dynamic allocation of a subnet, give specifications of subnet(s) allocated, and report usage statistics. This memo documents the current usage of the option in agreement with {[}RFC3942{]}, which declares that any pre-existing usages of option numbers in the range 128 - 223 should be documented and the working group will try to officially assign those numbers to those options.},
}