%% You should probably cite draft-ietf-6man-pio-pflag instead of this I-D.
@techreport{collink-6man-pio-pflag-03,
    number =    {draft-collink-6man-pio-pflag-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-collink-6man-pio-pflag/03/},
    author =    {Lorenzo Colitti and Jen Linkova and Xiao Ma and David 'equinox' Lamparter},
    title =     {{Signalling DHCPv6 Prefix Delegation Availability to Hosts}},
    pagetotal = 12,
    year =      2023,
    month =     nov,
    day =       6,
    abstract =  {This document defines a "P" flag in the Prefix Information Option of IPv6 Router Advertisements (RAs). The flag is used to indicate that the network prefers that clients do not use the prefix provided in the PIO for SLAAC but request a prefix via DHCPv6 PD instead, and use that delegated prefix to form addresses.},
}