%% You should probably cite rfc8111 instead of this I-D.
@techreport{ietf-lisp-ddt-09,
    number =    {draft-ietf-lisp-ddt-09},
    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-lisp-ddt/09/},
    author =    {Vince Fuller and Darrel Lewis and Vina Ermagan and Amit Jain and Anton Smirnov},
    title =     {{Locator/ID Separation Protocol Delegated Database Tree (LISP-DDT)}},
    pagetotal = 44,
    year =      2017,
    month =     jan,
    day =       18,
    abstract =  {This document describes the Locator/ID Separation Protocol Delegated Database Tree (LISP-DDT), a hierarchical distributed database that embodies the delegation of authority to provide mappings from LISP Endpoint Identifiers (EIDs) to Routing Locators (RLOCs). It is a statically defined distribution of the EID namespace among a set of LISP-speaking servers called "DDT nodes". Each DDT node is configured as "authoritative" for one or more EID-prefixes, along with the set of RLOCs for Map-Servers or "child" DDT nodes to which more-specific EID-prefixes are delegated.},
}