 The method described by RFC 2136 is a network protocol for use with managed DNS servers, and it includes a security mechanism.RFC 2136 supports all DNS record types, but often it is used only as an extension of the DHCP system, and in which the authorized DHCP servers register the client records in the DNS.This form of support for RFC 2136 is provided by a plethora of client and server software, including those that are components of most current operating systems.