a mail rename domain name (EXPERIMENTAL)
DNSKEY(s) the Child wants reflected in DS
A request for some or all records the server has available

[
        ATM Forum Technical Committee, "ATM Name System, V2.0", Doc ID: AF-DANS-0152.000, July 2000. Available from and held in escrow by IANA.]
[Sam_Weiler][http://cameo.library.cmu.edu/][
        Deploying DNSSEC Without a Signed Root.  Technical Report 1999-19,
Information Networking Institute, Carnegie Mellon University, April 2004.]